75000 - Document - Document and Entity Information
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75010 - Statement - Consolidated Balance Sheets
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75020 - Statement - Consolidated Balance Sheets (Parenthetical)
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75030 - Statement - Consolidated Statements of Operations
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75040 - Statement - Consolidated Statements of Stockholders' Equity
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75050 - Statement - Consolidated Statements of Cash Flows
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75060 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995455 - Disclosure - Organization
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995465 - Disclosure - Summary of Significant Accounting Policies
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995475 - Disclosure - Acquisition
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995485 - Disclosure - Revenue
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995495 - Disclosure - Related Party Transactions
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995505 - Disclosure - Fair Value Measurements
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995515 - Disclosure - Variable Interest Entities
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995525 - Disclosure - Segment Reporting
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995535 - Disclosure - Identifiable Intangible Assets, Net
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995545 - Disclosure - Real Estate
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995555 - Disclosure - Lessee Operating Leases
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995565 - Disclosure - Accrued Expenses and Other Current Liabilities
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995575 - Disclosure - Long-Term Debt
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995585 - Disclosure - Convertible Notes
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995595 - Disclosure - Earnings per Share
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995605 - Disclosure - Non-Controlling Interests
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995615 - Disclosure - Share-Based and Other Non-Cash Compensation
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995625 - Disclosure - Income Taxes
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995635 - Disclosure - Commitments and Contingencies
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995645 - Disclosure - Equity Transactions
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995655 - Disclosure - Subsequent Events
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995665 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995675 - Disclosure - Acquisition (Tables)
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995685 - Disclosure - Revenue (Tables)
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995695 - Disclosure - Related Party Transactions (Tables)
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995705 - Disclosure - Fair Value Measurements (Tables)
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995715 - Disclosure - Variable Interest Entities (Tables)
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995725 - Disclosure - Segment Reporting (Tables)
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995735 - Disclosure - Real Estate (Tables)
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995745 - Disclosure - Identifiable Intangible Assets, Net (Tables)
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995755 - Disclosure - Lessee Operating Leases (Tables)
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995765 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables)
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995775 - Disclosure - Long-Term Debt (Tables)
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995785 - Disclosure - Convertible Notes (Tables)
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995795 - Disclosure - Earnings per Share (Tables)
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995805 - Disclosure - Non-Controlling Interests (Tables)
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995815 - Disclosure - Share-Based and Other Non-Cash Compensation (Tables)
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995825 - Disclosure - Income Taxes (Tables)
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995835 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995845 - Disclosure - Acquisition - Additional Information (Details)
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995855 - Disclosure - Acquisition - Schedule of Allocation of Purchase Price to Tangible and Intangible Assets Acquired and Liabilities Assumed (Details)
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995865 - Disclosure - Revenue - Summary of Major Source of Revenue (Details)
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995875 - Disclosure - Revenue - Additional Information (Details)
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995885 - Disclosure - Related Party Transactions - Schedule of Activity and Outstanding Balances Between Managed Investment Products and Company (Details)
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995895 - Disclosure - Related Party Transactions - Additional Information (Details)
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995905 - Disclosure - Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)
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995915 - Disclosure - Fair Value Measurements - Additional Information (Details)
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995925 - Disclosure - Fair Value Measurements - Reconciliation of Changes in Fair Value of Level 3 Assets (Details)
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995935 - Disclosure - Fair Value Measurements - Reconciliation of Changes in Level 3 Liabilities (Details)
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995945 - Disclosure - Fair Value Measurements - Schedule of Assets of Consolidated Funds Measured at Fair Value on Recurring Basis (Details)
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995955 - Disclosure - Variable Interest Entities - Summary of Assets and Liabilities Measured at Fair Value on Recurring and Non-recurring Basis (Details)
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995965 - Disclosure - Variable Interest Entities - Reconciliation of Changes in Fair Value of Level 3 Assets (Details)
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995975 - Disclosure - Variable Interest Entities - Ranges of Significant Unobservable Inputs used to Value Level 3 Assets (Details)
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995985 - Disclosure - Segment Reporting - Additional Information (Details)
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995995 - Disclosure - Segment Reporting - Schedule of Operating Financial Results of Operating Segment (Details)
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996005 - Disclosure - Identifiable Intangible Assets, Net - Summary of Intangible Assets (Details)
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996015 - Disclosure - Identifiable Intangible Assets, Net - Additional Information (Details)
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996025 - Disclosure - Identifiable Intangible Assets, Net - Summary of Estimated Aggregate Amortization Expense (Details)
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996035 - Disclosure - Real Estate - Additional Information (Details)
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996045 - Disclosure - Lessee Operating Leases - Schedule of Operating and Variable Lease Cost (Details)
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996055 - Disclosure - Lessee Operating Leases - Schedule of Details of Leases Presented in Balance Sheets (Details)
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996065 - Disclosure - Lessee Operating Leases - Schedule of Maturity Analysis of the Company's Operating Lease Liabilities (Details)
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996075 - Disclosure - Lessee Operating Leases - Schedule of Maturity Analysis of the Company's Operating Lease Liabilities (Details) 2
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996085 - Disclosure - Lessee Operating Leases - Additional Information (Details)
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996095 - Disclosure - Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details)
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996105 - Disclosure - Long-Term Debt - Additional Information (Details)
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996115 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details)
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996125 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details) 4
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996135 - Disclosure - Convertible Notes - Additional Information (Details)
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996145 - Disclosure - Convertible Notes - Schedule of Convertible Notes (Details)
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996155 - Disclosure - Earnings per Share - Earnings Per Share, Basic and Diluted (Details)
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996165 - Disclosure - Earnings per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)
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996175 - Disclosure - Non-Controlling Interests - Summary of Non-controlling Interests Balance on Consolidated Balance Sheet (Details)
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996185 - Disclosure - Non-Controlling Interests - Summary of Non-controlling Interests Balance on Consolidated Statements of Operations (Details)
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996195 - Disclosure - Non-Controlling Interests - Additional Information (Details)
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996205 - Disclosure - Share-Based and Other Non-Cash Compensation - Tax Benefits Preservation Agreement - Additional Information (Details)
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996215 - Disclosure - Share-Based and Other Non-Cash Compensation - Stock Plans - Additional Information (Details)
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996225 - Disclosure - Share-Based and Other Non-Cash Compensation - Shares of Common Stock Available for Future Issuance (Details)
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996235 - Disclosure - Share-Based and Other Non-Cash Compensation - Restricted Stock Awards and Restricted Stock Units - Additional Information (Details)
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996245 - Disclosure - Share-Based and Other Non-Cash Compensation - Activity of Restricted Stock Awards and Restricted Stock Units (Details)
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996255 - Disclosure - Share-Based and Other Non-Cash Compensation - Summary of Option Activity (Details)
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996265 - Disclosure - Share-Based and Other Non-Cash Compensation - Stock Options - Additional Information (Details)
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996275 - Disclosure - Share-Based and Other Non-Cash Compensation - Stock Based Compensation Expense - Additional Information (Details)
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996285 - Disclosure - Share-Based and Other Non-Cash Compensation - Non-Employee Director Deferred Compensation Plan - Additional Information (Details)
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996295 - Disclosure - Share-Based and Other Non-Cash Compensation - Other Non-Cash Compensation - Additional Information (Details)
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996305 - Disclosure - Income Taxes - Additional Information (Details)
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996315 - Disclosure - Income Taxes - Provision for Income Taxes (Details)
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996325 - Disclosure - Income Taxes - Reconciliation of Expected Federal Income Tax Expense (Details)
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996335 - Disclosure - Income Taxes - Reconciliation of Expected Federal Income Tax Expense (Details) 2
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996345 - Disclosure - Income Taxes - Tax Effect of Temporary Differences of Deferred Tax Assets and Liabilities (Details)
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996355 - Disclosure - Income Taxes - Gross Unrecognized Tax Benefit Activity (Details)
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996365 - Disclosure - Equity Transactions - Additional Information (Details)
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996375 - Disclosure - Subsequent Events - Additional Information (Details)
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Payments for Repurchase of Redeemable Noncontrolling Interest
Distributions from non-controlling interests in Consolidated Funds
Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Forfeited, cancelled or expired
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price
Repurchase of convertible notes
Repurchase of convertible notes.
Repurchase of Convertible Notes
Segments
Segments [Domain]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest, Total
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest
Net income (loss)
Schedule of Activity and Outstanding Balances Related Party and Company
Schedule of Related Party Transactions [Table Text Block]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Balance Sheet Location
Statement of Financial Position Location, Balance [Domain]
MAST Capital
M A S T Capital Management L L C [Member]
MAST Capital Management, LLC.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Beginning balance
Ending balance
Summary of Assets and Liabilities Measured at Fair Value on Recurring and Non-recurring Basis
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Summary of Assets and Liabilities Measured at Fair Value on Recurring and Non-recurring Basis
Deferred Tax Asset Stock Based and Accrued Compensation
Deferred Tax Asset Stock Based and Accrued Compensation.
Stock based and accrued compensation
Change in fair value of contingent consideration
Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease)
Schedule of Long-Term Debt Instruments [Table Text Block]
Schedule of Long-Term Debt
Plan Name
Plan Name [Axis]
Redeemable preferred stock fair value per share
Redeemable Preferred Stock Liability Fair Value Per Share
Redeemable preferred stock liability fair value per share.
Payable for securities purchased consolidated funds.
Payable For Securities Purchased Consolidated Funds
Liabilities of Consolidated Funds - Payable for securities purchased
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Number of rights automatically attaching per common share
Number Of Rights Attached Per Share Of Common Stock
Represents the number of rights that automatically attach per share of common stock.
Operating Expenses [Abstract]
Operating costs and expenses:
Fair Value, Inputs, Level 2
Fair Value, Inputs, Level 2 [Member]
Level 2
Total deferred tax assets, net
Deferred Tax Assets, Net of Valuation Allowance
Weighted average exercise price
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Lessee operating lease optional lease extension period.
Lessee Operating Lease Optional Lease Extension Period
Lessee, operating leases optional lease extension period
Common stock, shares authorized
Common Stock, Shares Authorized
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Estimated Aggregate Amortization Expense, For the year ending June 30, 2030
Accounts Receivable, after Allowance for Credit Loss, Total
Accounts Receivable, after Allowance for Credit Loss
Investment management revenues receivable
Massachusetts
MASSACHUSETTS
Boston, Massachusetts
Interest and other income of consolidated funds.
Interest and Other Income of Consolidated Funds
Interest and other income of Consolidated Funds
Interest and other income of Consolidated Funds
Product and Service
Product and Service [Axis]
Document Fiscal Period Focus
Document Fiscal Period Focus
Accrued interest rate on notes payable
Debt Instrument, Interest Rate, Stated Percentage
Interest rate
Tax benefits preservation agreement, minimum increase of collective ownership of aggregate amount of outstanding shares
Operating Loss Carryforwards Limitations On Use Maximum Allowed Ownership Change Percentage
Operating loss carryforwards limitations on use maximum allowed ownership change percentage.
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Other
Other Accrued Liabilities, Current
Convertible Notes
Convertible Debt [Member]
Segment Reporting
Segment Reporting, Policy [Policy Text Block]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and Cash Equivalents, at Carrying Value, Total
Cash and cash equivalents
Cash and Cash Equivalent
Denominator:
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Denominator:
Schedule of Aggregate Future Required Principal Debt Repayments
Schedule of Maturities of Long-Term Debt [Table Text Block]
Related party payables
Increase (Decrease) in Accounts Payable, Related Parties
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common stock, shares issued
Common Stock, Shares, Issued, Total
Common Stock, Shares, Issued
Interest and Dividend Income [Policy Text Block]
Interest and Dividend Income.
Interest and Dividend Income
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Statement [Table]
Statement [Table]
Lease liabilities and right of use assets arising from operating leases
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Federal
Internal Revenue Service (IRS) [Member]
DME Revolver
D M E Revolver [Member]
DME Revolver.
Valuation, Income Approach [Member]
Income Approach
Minority Interest [Table]
Noncontrolling Interest [Table]
HC LLC and Subsidiaries
Great Elm Healthcare Limited Liability Company [Member]
Great Elm Healthcare, LLC.
Investment Owned, Balance, Principal Amount
Investment amount in subsidiary
Real Estate Assets, Net [Policy Text Block]
Real estate assets, net.
Real Estate Assets, net
Income Taxes [Table]
Income Taxes [Table]
Income Taxes [Table]
Statement [Line Items]
Statement [Line Items]
Business Acquisition, Acquiree
Business Combination [Domain]
Accrued Construction Business Expenses
Accrued construction business expenses.
Construction business expenses
Exception Open Tax Year
Exception Open Tax Year
Exception open tax year
Entity Filer Category
Entity Filer Category
Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Liabilities and Equity
Total liabilities and stockholders' equity
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Payables and Accruals [Abstract]
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent, Total
Changes in uncertain tax benefits
Statement of Partners' Capital [Abstract]
Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Debt Instrument, Frequency of Periodic Payment
Promissory note, frequency of periodic payment
Valley Healthcare Group, LLC (VHG)
Valley Healthcare Group, L L C [Member]
Valley Healthcare Group, LLC.
Unrealized Gain Loss On Investments Including Investments Of Consolidated Fund
Unrealized gain (loss) on investments including investments of consolidated fund.
Unrealized loss (gain) on investments
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Increase in valuation allowance
GECC
Great Elm Capital Corp [Member]
Information pertaining to Great Elm Capital Corp, a publicly-traded business development company incorporated in Maryland.
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Latest Tax Year
Latest Tax Year [Member]
Proceeds from issuance of debt
Proceeds from Issuance of Debt
Amount drawn upon issuance of promissory note
Selling And General And Administrative Expense
Selling and general and administrative expense
Selling, general and administrative
Amortization period of intangible assets
Finite-Lived Intangible Assets, Remaining Amortization Period
Deferred Tax Assets, Valuation Allowance, Total
Less: valuation allowance
Deferred Tax Assets, Valuation Allowance
Statutory income tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
US federal statutory income tax benefit
Subsequent Event [Line Items]
Share Repurchase Program [Table]
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference
Documents Incorporated by Reference [Text Block]
Goodwill, Total
Goodwill
Goodwill
Goodwill, Ending Balance
Goodwill, Begining Balance
Other Noncash Income (Expense), Total
Other Noncash Income (Expense)
Other non-cash expense, net
Restricted stock
Incremental Common Shares Attributable To Restricted Stock
Incremental common shares attributable to restricted stock.
Restricted stock
Effective Income Tax Rate Reconciliation, Percent
Effective income tax rate
Income Taxes Paid
Cash paid for taxes
Common Stock Issuable upon Conversion of Convertible Notes
Convertible Debt Securities [Member]
Convertible Notes
Net proceeds from sale of real estate.
Net Proceeds From Sale Of Real Estate
Proceeds from sale of real estate
Related Interest Income
Investment Income, Interest
Interest income
Income Tax Authority
Income Tax Jurisdiction [Axis]
Voting Interest Entities
Voting Interest Entities Policy [Policy Text Block]
Voting interest entities policy.
Net operating loss carryforwards, not subject to expiration
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration
Geographical
Geographical [Domain]
Investments, at Fair Value
Equity Securities without Readily Determinable Fair Value [Policy Text Block]
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents and Restricted Cash
Variable Interest Entity [Table]
Significant Accounting Policies [Table]
Significant Accounting Policies [Table]
Significant accounting policies.
Unamortized debt issuance costs
Debt Issuance Costs, Net, Total
Debt Issuance Costs, Net
Percentage of indirect common stock equity interest issued
Percentage of Indirect Common Stock Equity Interest Issued Classified As Temporary Equity
Percentage of indirect common stock equity interest issued classified as temporary equity.
Noncontrolling Interest [Abstract]
Long Term Incentive Plan2016 [Member]
Information pertaining to the 2016 Long-Term Incentive Plan.
2016 Long-Term Incentive Plan
Durable Medical Equipment Assets
Durable Medical Equipment Assets [Member]
Durable medical equipment assets.
Proceeds from Sale and Maturity of Held-to-Maturity Securities, Total
Proceeds from Sale and Maturity of Held-to-Maturity Securities
Proceeds from settlement of held-to-maturity investments
Related Party [Member]
Related Party
Assets of consolidated funds - other assets.
Assets of Consolidated Funds - Other Assets
Assets of Consolidated Funds - Other assets
Risk-Free Rate
Measurement Input, Risk Free Interest Rate [Member]
Nonrelated Party [Member]
Nonrelated Party
Options granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Disaggregation Of Revenue [Table]
Disaggregation of Revenue [Table]
Cybersecurity Risk Management, Strategy, and Governance [Table]
Earnings Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Receivable for reimbursable expenses paid
Receivable For Reimbursable Expenses Paid
Receivable for reimbursable expenses paid.
Investment Management Expenses
Investment Management Expenses [Member]
Investment management expenses.
Deferred financing costs are amortized to interest expense on a straight-line term
Deferred financing costs are amortized to interest expense on a straight-line term
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount [Abstract]
Nontaxable or nondeductible items
Investment, Name [Axis]
Durable Medical Equipment Sales and Services Revenue
Sales And Services Of Durable Medical Equipment [Member]
Sales and services of durable medical equipment.
Net loss per share
Basic
Basic
Basic
Summary of Major Source of Revenue
Disaggregation of Revenue [Table Text Block]
Ending Balance
Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Variable Interest Entity [Line Items]
Rental income
Operating Lease, Lease Income, Total
Total rental revenue
Liabilities, Current
Total current liabilities
Investments, cost basis
Investments Cost Basis
Represents the original cost of investments, including trading, available-for-sale and held-to-maturity.
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net (loss) income to net cash flows from operating activities:
GP Corp.
GP Corp.
Gecc Gp Corp [Member]
Information pertaining to GECC GP Corp.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Reconciliation of Changes in Level 3 Liabilities
Description of non-controlling interest in subsidiaries upon seventh anniversary of issuance date
Description Of Non Controlling Interest In Subsidiaries Upon Seventh Anniversary Of Issuance Date
Description of non-controlling interest in subsidiaries upon seventh anniversary of issuance date.
Percentage of ownership interest repurchased
Percentage Of Ownership Interest Repurchased
Percentage of ownership interest repurchased.
Aggregate intrinsic value
Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract]
Share-based compensation arrangement by share-based payment award options aggregate intrinsic value.
Variable Interest Entities [Abstract]
Variable Interest Entities.
Addition for tax positions of prior years
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Debt issuance costs
Payments of Debt Issuance Costs
Equity issuance costs
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities of consolidated funds.
Adjustments To Reconcile Net Income (Loss) To Cash Provided By (Used In) Operating Activities of Consolidated Funds [Abstract]
Adjustments to reconcile net (loss) income to net cash flows from operating activities of Consolidated Funds:
Consolidation Items [Domain]
Prosper Peak Holdings LLC.
Prosper Peak Holdings LLC [Member]
PPH
Stockholders' equity
Equity, Attributable to Parent [Abstract]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Reconciliation of Changes in Fair Value of Level 3 Assets
Reconciliation of Changes in Fair Value of Level 3 Assets
Entity Small Business
Entity Small Business
Lease Commencement Date
Lease commencement date.
Lease commencement date
Valuation, Market Approach [Member]
Market Approach
Retained Earnings (Accumulated Deficit), Ending Balance
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Total
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Accumulated Deficit
Issuance Of Interests In Consolidated Fund
Issuance of interests in consolidated fund.
Issuance of interests in Consolidated Funds
Net income (loss)
Income Statement Related Disclosures [Abstract]
Restricted Stock, Value, Shares Issued Net of Tax Withholdings
Withholding tax payments related to restricted stock
Cross-border tax effects
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount, Total
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Net operating loss carryforwards, subject to expiration
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration
Increase (decrease) in cash and cash equivalents from consolidated funds.
Increase (Decrease) In Cash and Cash Equivalents From Consolidated Funds
Cash and cash equivalents
Cash and cash equivalents
Sale of Stock, Price Per Share
Shares issued per share
Other Non Cash Compensation Awards Vesting Period
Other non-cash compensation awards vesting period.
Award vesting period
Monomoy REIT Restricted [Member]
Monomoy reit restricted.
Monomoy REIT Restricted
Share-Based and Other Non-Cash Compensation
Share-Based Payment Arrangement [Text Block]
Payments to Acquire Short-Term Investments
Purchases of investments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Convertible Notes
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
Convertible Notes
Lease Contractual Term [Axis]
Management Fees
Management Service, Base [Member]
MP II Restricted
MP II Restricted [Member]
MP II restricted member.
Increase (decrease) in accrued expenses and other liabilities.
Increase (Decrease) In Accrued Expenses and Other Liabilities
Accrued expenses and other liabilities
Lessee Lease Description [Line Items]
Lessee, Lease, Description [Line Items]
Amendment Flag
Amendment Flag
Increase in number of shares available for issuance
Share-Based Compensation Arrangement by Share-Based Payment Award Increase in Number of Shares Available for Issuance
Share-based compensation arrangement by share-based payment award, increase in number of shares available for issuance.
Product and Service
Product and Service [Domain]
Great elm capital management Inc.
Great Elm Capital Management Inc [Member]
GECM
Increase (decrease) in other operating assets of consolidated funds.
Increase (Decrease) In Other Operating Assets of Consolidated Funds
Other assets
Other assets
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
US federal statutory income tax benefit
Percentage of ownership interest exchanged
Percentage Of Ownership Interest Exchanged
Percentage of ownership interest exchanged.
Redemption of Convertible Notes
Redemption of Convertible Notes
Redemption of Convertible Notes
Redemption of Convertible Notes
Earnings Per Share, Policy [Policy Text Block]
Earnings (Loss) Per Share
Additional convertible notes.
Additional Convertible Notes [Member]
Additional Convertible Notes
LIABILITIES, NON-CONTROLLING INTEREST AND STOCKHOLDERS' EQUITY
Liabilities and Equity [Abstract]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by (used in) operating activities
Net cash flows from operating activities
Operating leases
Increase (Decrease) in Operating Lease Liability
Lease Liabilities
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount
Passthrough investment in REV
Passthrough investment in REV
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock
Common Stock [Member]
Securities Purchase Agreement [Member]
Securities purchase agreement.
Securities Purchase Agreement
Cybersecurity Risk Role of Management [Text Block]
Options granted
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Lessee, Operating Lease, Liability, to be Paid, Year Three
For the year ending June 30, 2029
Entity Address, Address Line One
Entity Address, Address Line One
Deferred Tax Liabilities, Gross, Total
Total deferred tax liabilities
Deferred Tax Liabilities, Gross
Change in accounting principle, accounting standards update, immaterial effect [true false]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]
Fair value asset transfers out of level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Transfers Out
Net Transfers
Schedule of the Ranges of Assumptions Used to Value Options Granted
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Axis]
Earnings Per Share [Abstract]
Net (loss) income attributable to shareholders per share
Net loss attributable to stockholders per share
Income Taxes
Income Tax, Policy [Policy Text Block]
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Supplemental Cash Flow Information [Abstract]
Supplemental disclosure of cash flow information:
Great Elm Group, Inc.
Great Elm Group, Inc [Member]
GEG
Identifiable Intangible Assets, Net
Goodwill and Intangible Assets Disclosure [Text Block]
Balance Sheet Location
Statement of Financial Position Location, Balance [Axis]
Total right of use assets
Right of use assets
Right-of-use asset
Maximum equity interest percentage
Maximum equity Interest Percentage
Maximum equity Interest Percentage.
Total deferred tax assets, gross
Deferred Tax Assets, Gross
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Net loss attributable to non-controlling interest
Net loss attributable to non-controlling interest
Net Income (Loss) Attributable to Noncontrolling Interest
Less: net (loss) income attributable to non-controlling interest in Consolidated Funds
Sales of investments
Gain (Loss) on Sale of Investments
Gain (Loss) on Sale of Investments, Total
Class of Warrant or Right
Class of Warrant or Right [Axis]
Document Type
Document Type
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Ownership percentage
Ownership percentage
Subsidiary, Ownership Percentage, Parent
Interest expense associated with Convertible Notes, continuing operations
Interest on Convertible Debt, Net of Tax
Interest expense associated with Convertible Notes
Real estate assets, net.
Real Estate Assets Net
Real estate assets, net
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Warrants
Warrants, Policy [Policy Text Block]
Disclosure of accounting policy for warrants.
Entity Central Index Key
Entity Central Index Key
GESOF
Great Elm S P A C Opportunities Fund L L C [Member]
Great Elm SPAC Opportunities Fund, LLC.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Organization
Organization Disclosure [Text Block]
Organization disclosure.
Valuation Approach and Technique [Axis]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase (decrease) in cash and cash equivalents
Net increase (decrease) in cash and cash equivalents
Investment Management Assets
Investment Management Assets [Member]
Investment management assets.
Subsequent Event Type
Subsequent Event Type [Domain]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Potentially dilutive shares excluded from diluted net income (loss) per share
Total Anti-Dilutive Securities
Total Anti-Dilutive Securities
Balance as of
Balance Sheet Related Disclosures [Abstract]
Non-controlling Interests
Non-controlling interests [Policy Text Block]
Non-controlling interests.
Common stock, par value
Common Stock, Par or Stated Value Per Share
Investment management agreement and certain other assets for Monomoy Properties REIT, L.L.C.
Investment Management Agreement And Certain Other Assets for Monomoy Properties REIT L.L.C. [Member]
Investment Management Agreement and Certain Other Assets for Monomoy Properties REIT L.L.C.
Costs incurred under agreement
Operating Costs and Expenses, Total
Operating Costs and Expenses
Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Percentage of indirect common stock equity interest issued
Percentage of Indirect Common Stock Equity Interest Issued Classified As Permanent Equity
Percentage of indirect common stock equity interest issued classified as permanent equity.
Weighted average remaining contractual term
Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract]
Share-based compensation arrangement by share-based payment award, options, weighted average remaining contractual term.
Incentive Fees
Management Service, Incentive [Member]
Realized gain on investment
Realized Investment Gains (Losses)
Realized loss on investments
Realized gain on investments
Total Great Elm Group Inc. Stockholders' Equity
Parent [Member]
Document Financial Statement Error Correction [Flag]
Document Financial Statement Error Correction [Flag]
Common stock, shares outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares
Related Party Note Payable
Debt Disclosure [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Purchases
Purchases
Supplemental cash flow elements
Redeemable preferred stock, shares
Redeemable Preferred Stock Liability Shares Issued
Redeemable preferred stock liability shares issued.
Ownership
Ownership [Domain]
Current Fiscal Year End Date
Current Fiscal Year End Date
Debt Instrument [Table]
Schedule of Long-Term Debt Instruments [Table]
Payments to Noncontrolling Interests
Redemptions of non-controlling interests in Consolidated Funds
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
California
CALIFORNIA
Entity Address, State or Province
Entity Address, State or Province
Beginning Balance
Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Business Interest Carryforward, Percent
Business Interest Carryforward, Percent.
Business interest carryforward percentage
Stock Issued During Period, Value, Conversion of Convertible Securities
Shares issued convertible notes, Value
Permanent equity
Non Controlling Interest Classified As Permanent Equity
Non-controlling interest classified as permanent equity.
Investment, Name [Domain]
Investment Owned, Balance, Shares
Number of shares held in subsidiary
Unamortized debt issuance cost
Debt issuance costs
Debt Issuance Costs, Gross
Asset Acquisition [Domain]
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding
Shares of Common Stock Available for Future Issuance
Common Stock, Capital Shares Reserved for Future Issuance
Fair value liabilities level 1 to level 2 transfer amount.
Fair Value Liabilities Level 1 To Level 2 Transfer Amount
Fair value liabilities level 1 to level 2 transfers
Class of Warrant or Right
Class of Warrant or Right [Domain]
Geographical
Geographical [Axis]
Amortization of premium and accretion of discount, net.
Amortization Of Premium And Accretion Of Discount, Net
Amortization of premium and accretion of discount, net
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Receivables from managed funds
Increase (Decrease) in Accounts Receivable, Related Parties
Net operating loss and credit expirations
Income Tax Reconciliation Net Operating Loss And Credit Expirations
Income tax reconciliation net operating loss and credit expirations.
MedOne
Med One Healthcare L L C [Member]
MedOne Healthcare LLC.
Carrying value of non-controlling interest prior to sale (permanent equity)
Carrying value of non-controlling interest prior to sale
Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance
Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance
Stockholders' Equity Attributable to Noncontrolling Interest, Total
Redeemable non-controlling interest in Consolidated Funds
Increase in equity Interest Percentage
Increase in equity Interest Percentage.
Increase in equity interest percentage
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State taxes net of federal impact
License [Member]
Licenses
Other
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount
AMPM
Advanced Medical D M E L L C And P M Sleep Lab L L C [Member]
Advanced medical DME, LLC and PM sleep lab, LLC.
Accrued Expenses and Other Current Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Redeemable preferred stock, face value per share
Redeemable Preferred Stock Of Subsidiaries Face Value Per Share
Redeemable preferred stock of subsidiaries face value per share.
Schedule of Tax Effect of Temporary Differences of Deferred Tax Assets and Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Monomoy REIT [Member]
Monomoy REIT.
Monomoy REIT
Proceeds from Sale and Maturity of Marketable Securities
Proceeds from settlement of trading securities
Long-Term Debt, Fair Value
Long term debt, face value
Fair value of debt notes
Subsequent Event
Subsequent Event [Member]
Investments in Marketable Securities
Marketable Securities, Policy [Policy Text Block]
Fair value asset level 1 to level 2 transfers amount.
Fair Value Assets Level 1 To Level 2 Transfer Amount
Fair value assets level 1 to level 2 transfers
Monomoy Properties, LLC
Monomoy Fund
Monomoy Properties, LLC.
Monomoy REIT
Other Assets, Noncurrent, Total
Other assets
Other Assets, Noncurrent
Unamortized debt discounts and issuance costs
Unamortized debt issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Redeemable preferred stock redemption premium percentage minimum
Redeemable Preferred Stock Redemption Premium Percentage Minimum
Redeemable preferred stock redemption premium percentage minimum.
Antidilutive Securities
Antidilutive Securities [Axis]
Vested and expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Incentive fee earned as percentage on investment performance
Incentive Fee Earned As Percentage On Investment Performance
Incentive fee earned as percentage on investment performance.
State
State and Local Jurisdiction [Member]
Equipment Financing
Equipment Financing [Member]
Represents information related to equipment financing.
Related Party Transaction
Related Party Transaction [Axis]
Restricted Stock Awards and Restricted Stock Units and Stock Options
Restricted Stock Awards And Restricted Stock Units And Stock Options [Member]
Restricted stock awards, restricted stock units and stock options member.
Corbel Facility
Corbel Facility [Member]
Corbel facility.
Convertible Notes
Convertible Notes [Text Block]
Convertible notes.
Finite-Lived Intangible Assets, Major Class Name
Finite-Lived Intangible Assets, Major Class Name [Domain]
Estimated Aggregate Amortization Expense, Thereafter
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Real Estate Disclosure [Text Block]
Real Estate
Preferred Stock, Value, Issued, Ending Balance
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Total
Preferred stock, $0.001 par value; 5,000,000 authorized and zero outstanding
Preferred Stock, Value, Issued
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Intangible assets
Capitalized Cost Within Real Estate Assets
Capitalized cost within real estate assets.
Capitalized costs within real estate assets, net
Selling, General and Administrative Expense, Total
Selling, general and administrative
Selling, General and Administrative Expense
Asset Acquisition, Consideration Transferred, Contingent Consideration
Asset acquisition, contingent consideration
Debt instrument maturity date
Debt Instrument, Maturity Date
Series A Warrant [Member]
Series A Warrant.
Series A Warrant
Minimum
Minimum
Minimum [Member]
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Current assets:
Assets, Current [Abstract]
Interest Expense, Other
Interest expense other borrowings
Real Estate [Member]
Real Estate
Real Estate
Distributions from Consolidated Funds
Distributions from Consolidated Funds
Distributions from Consolidated Funds
Unrealized loss on investments
Deferred Tax Asset, Debt Securities, Trading, Unrealized Loss
Number of shares of Series A Junior Participating Cumulative Preferred Stock purchased by each right
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right
Amortization expense
Amortization of Intangible Assets, Total
Aggregate Amortization Expense
Amortization of Intangible Assets
Fair Value, Inputs, Level 3
Fair Value, Inputs, Level 3 [Member]
Level 3
Share Repurchase Program [Line Items]
Liabilities:
Liabilities, Fair Value Disclosure [Abstract]
Segment Reporting [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis
Business Combination [Policy Text Block]
Business Combinations
Tax Period
Tax Period [Domain]
Number of years issued shares vest annually on pro-rata basis
Number Of Years Issued Shares Vest Annually On Pro Rata Basis
Number of years issued shares vest annually on pro-rata basis.
Number of subsequent years issued shares vest annually on pro-rata basis
Current liabilities:
Liabilities, Current [Abstract]
Related Party Transactions [Abstract]
Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]
Summary of Base Rents for the Remaining Lease Term
Proceeds from Sale of Restricted Investments
Redemption of investments
Operating Loss Carryforwards, Total
Net operating loss carryforwards
Operating Loss Carryforwards
Permanent equity
Net Income Loss Attributable To Noncontrolling Interest Classified As Permanent Equity
Net income loss attributable to noncontrolling interest classified as permanent equity.
Restricted cash
Restricted Cash and Cash Equivalents, Total
Restricted Cash and Cash Equivalent
Debt Securities, Trading, Measurement Input
Debt securities measurement input
Debt investment measurement input
Commitments and Contingencies
Commitments and Contingencies (Note 19)
Leases
Lessee, Leases [Policy Text Block]
Deferred Compensation Plan
Deferred Compensation, Share-Based Payments [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Beginning Balance
Ending Balance
Series B Warrant
Series B Warrant [Member]
Series B Warrant.
2016 Employee Stock Purchase Plan
Employee Stock Purchase Plan2016 [Member]
Information pertaining to the 2016 Employee Stock Purchase Plan.
Percentage of proceeds arising from sale of durable medical equipment business
Percentage Of Proceeds Arising From Sale Of Durable Medical Equipment Business
Percentage of proceeds arising from sale of durable medical equipment business.
Total liabilities
Total lease liabilities
Operating Lease, Liability
Operating lease liability
Auditor Firm ID
Preferred Stock, Dividend Rate, Percentage
Cumulative preferred distribution percentage
Forecast [Member]
Lessee, Lease, Description [Table]
Office Leases
Office Leases [ Member]
Office leases.
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Change in valuation allowance
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net (loss) income
Net (loss) income
Lease Contractual Term [Domain]
Income Tax Examination, Penalties and Interest Accrued
Income Tax Examination, Penalties and Interest Accrued, Total
Accrual for interest and penalties associated with tax liabilities
Tax benefits preservation agreement, ownership change period
Net Operating Losses And Tax Credit Carryforwards Limitations On Use Ownership Change Period
Net operating losses and tax credit carryforwards limitations on use ownership change period.
Purchase of property for rentals closed
Purchase of property for rentals closed.
Purchase of property for rentals closed
Long-term Debt, Type
Long-Term Debt, Type [Domain]
Investment Transferred through In-Kind Contribution
Investment transferred through in-kind contribution.
Investment transferred through in-kind contribution
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Denominator for basic EPS - Weighted average shares of common stock outstanding
Basic
Basic income (loss) per share
Weighted average shares used in computing income (loss) per share,basic
Real Estate Segment [Member]
Real Estate Segment.
Real Estate
Scenario [Axis]
Document Information [Line Items]
Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Real estate property sales.
Real Estate Property Sales [Member]
Real Estate Property Sales
Beginning Balance
Ending Balance
Unrecognized Tax Benefits Gross
Unrecognized Tax Benefits, Gross
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount, Total
Other
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
Reconciliation of Expected Federal Income Tax Expense
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Preferred Stock Purchase Right
Preferred Stock Purchase Right [Member]
Represents information pertaining to Preferred Stock Purchase Rights included in the Rights Plan.
Fair Value Measured at Net Asset Value Per Share
Fair Value Measured at Net Asset Value Per Share [Member]
Segments
Segments [Axis]
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Deferred Tax Assets:
Deferred Tax Assets, Net [Abstract]
Net realized and unrealized gain (loss).
Net Realized And Unrealized Gain (Loss)
Net realized and unrealized (loss) gain
Net realized and unrealized gain (loss)
Subsequent Events [Text Block]
Subsequent Events
Long-Term Debt
Long term debt
Deferred Tax Asset, Interest Carryforward
Interest expense carryforward
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Fair Value, Inputs, Level 1, 2 and 3
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Stock-based compensation
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Notes payable, interest rate description
Debt Instrument, Interest Rate Terms
Contingent consideration liability
Business Combination, Contingent Consideration, Liability, Current
Change in valuation allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Significant Accounting Policies [Line Items]
Significant Accounting Policies [Line Items]
Significant accounting policies.
Stockholders' Equity Attributable to Parent, Ending Balance
Stockholders' Equity Attributable to Parent, Beginning Balance
Total Great Elm Group, Inc. stockholders' equity
Equity, Attributable to Parent
Total Great Elm Group, Inc Stockholder's Equity
Preferred stock, par value
Preferred Stock, Par or Stated Value Per Share
Corbel Capital Partners SBIC, L.P. (Corbel)
Corbel Capital Partners S B I C L P [Member]
Corbel Capital Partners SBIC, L.P.
Corbel
Schedule of Variable Interest Entities [Table Text Block]
Variable Interest Entities
Percentage of common stock interest sold classified as permanent equity
Percentage Of Common Stock Interest Sold Classified As Permanent Equity
Percentage of common stock interest sold classified as permanent equity.
Existence of option to extend operating lease
Lessee, Operating Lease, Existence of Option to Extend [true false]
Series A Warrants and Series B Warrants Member
Series A Warrants and Series B Warrants.
Series A Warrants and Series B Warrants
Massachusetts, Arizona, and Nebraska
Massachusetts, Arizona, and Nebraska [Member]
Massachusetts, Arizona, and Nebraska.
Valuation Approach and Technique [Domain]
Redeemable Preferred stock, redemption date
Redeemable Preferred Stock Liability Redemption Date
Redeemable preferred stock liability redemption date.
Over-Allotment Option [Member]
Underwriters' Over-allotment Option
Entity Address, Address Line Two
Entity Address, Address Line Two
Fair Value Measurements
Fair Value Disclosures [Text Block]
Earliest Tax Year
Earliest Tax Year [Member]
Payments to Acquire Held-to-Maturity Securities
Purchases of investments in held-to-maturity securities
Related Party Payable
Related party payable.
Related Party Payable [Member]
Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Summary of Accrued Expenses and Other Current Liabilities
Schedule of Accrued Liabilities [Table Text Block]
Debt Instrument, Name
Debt Instrument, Name [Domain]
Supplemental non-cash financing transactions:
Noncash Investing and Financing Items [Abstract]
Discount Rate
Measurement Input, Discount Rate [Member]
Accrued expenses and other current liabilities
Accrued expenses and other current liabilities
Accrued Liabilities and Other Liabilities
Business acquisition, date
Business Combination, Effective Date of Acquisition
Schedule of Gross Unrecognized Tax Benefit Activity
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Seven point Two Five percent notes due Two Thousand Twenty Seven.
Seven Point Two Five Percent Notes Due Two Thousand Twenty Seven [Member]
7.25% Notes due 2027
Operating loss carryforwards expiration period
Operating Loss Carry Forwards Expiration Year
Operating loss carry forwards expiration year , in CCYY format.
Plan Name
Plan Name [Domain]
Fair Value Measurements [Line Items]
Fair Value Measurements.
Investment Advisory, Management and Administrative Service [Member]
Investment Management Revenues
Interest expense of non-cash interest related to amortization of discounts and debt issuance costs
Interest Expense, Total
Interest expense
Interest expense
Interest expense
Interest Expense, Operating and Nonoperating
Realized Gains (Losses) on Convertible Notes
Realized Gains Losses on Convertible Notes
Realized gain on Convertible Notes
Realized gain on Convertible Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Monomoy UpREIT [Member]
Monomoy UpREIT.
Monomoy UpREIT
Credit Facility
Credit Facility [Axis]
Percentage of ownership interest (as a percent)
Equity Method Investment, Ownership Percentage
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Fair value assets level 2 to level 1 transfer amount.
Fair Value Assets Level 2 To Level 1 Transfer Amount
Fair value assets level 2 to level 1 transfers
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Class of Warrant or Right, Outstanding
Warrants of common stock shares
Tax Period [Axis]
Tax Period
Deferred compensation, service period
Deferred Compensation Arrangement with Individual, Requisite Service Period
Related Party
Related and Nonrelated Parties [Axis]
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other
Fair value liability transfers into level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3
Accounting Standards Update [Extensible Enumeration]
Summary of Intangible Assets
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]
Entity Address, City or Town
Entity Address, City or Town
Business Combination, Contingent Consideration, Liability, Total
Contingent consideration fair value
Business Combination, Contingent Consideration, Liability
Contingent consideration liability
Stock repurchases (in shares)
Stock Repurchased During Period, Shares
Financing Receivable, after Allowance for Credit Loss, Current
Financing Receivable, after Allowance for Credit Loss, Current, Total
Related party loan receivable
Expenses Of Consolidated Funds
Expenses of consolidated funds.
Expenses of Consolidated Funds
Number of Reportable Segments
Number of reportable segments
Long Term Incentive Plan 2025 [Member]
Long Term Incentive Plan 2025 [Member]
2025 Long-Term Incentive Plan
Security Exchange Name
Security Exchange Name
Credit Facility
Credit Facility [Domain]
Redeemable preferred stock held by related parties
Redeemable Preferred Stock Held By Related Party Non Current
Redeemable preferred stock held by related party non current.
Long-Term Debt, Gross
Convertible Notes principal
Total principal
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other
Goodwill and Identifiable Intangible Assets [Policy Text Block]
Goodwill and Identifiable Intangible Assets [Policy Text Block]
Goodwill and Identifiable Intangible Assets
Loss from continuing operations, before provision for income taxes
Loss from continuing operations, before provision for income taxes
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
(Loss) income before income taxes
Income (loss) before income taxes
Vested and expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Unrealized gain on investment
Deferred Tax Liabilities, Unrealized Gains on Investment
Deferred Tax Liabilities, Unrealized Gains on Investment.
Unrealized gain on investment
Sale on assets for consideration
Sale on Assets for Consideration
Sale on one of its developments for consideration
Real Estate [Abstract]
Measurement Input Type
Measurement Input Type [Domain]
Antidilutive Securities, Name
Antidilutive Securities, Name [Domain]
Investment Owned, Cost
Cost of investments
Jason W. Reese
Jason W Reese [Member]
Jason W. Reese.
Identifiable intangible assets
Deferred Tax Assets, Goodwill and Intangible Assets
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance
Cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash
Cash paid for interest
Interest Paid, Excluding Capitalized Interest, Operating Activity
Statistical Measurement
Statistical Measurement [Domain]
Preferred stock rights exercise price
Class of Warrant or Right, Exercise Price of Warrants or Rights
Warrants exercise price
Total current assets
Assets, Current
Stock-based compensation expense
Stock-based compensation
Non-cash compensation
Non-cash compensation
Document Period End Date
Document Period End Date
Variable Interest Entity, Measure of Activity [Abstract]
Other reconciling items
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract]
Broker Quotes [Member]
Broker quotes member.
Broker Quotes
Title of Individual
Title and Position [Axis]
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Domain]
ICFR Auditor Attestation Flag
Shared Personnel and Reimbursement Agreement
Shared Personnel And Reimbursement Agreement [Member]
Shared personnel and reimbursement agreement.
Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Rights plan restriction, maximum percentage of common stock owned by a person or an entity restricted from buying additional shares
Rights Plan Restriction Maximum Percentage Of Common Stock Owned By A Person Or An Entity Restricted From Buying Additional Shares
Rights plan restriction, maximum percentage of common stock owned by a person or an entity restricted from buying additional shares.
Recent transaction.
Recent Transaction [Member]
Recent Transaction
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Intangible assets acquired, weighted average estimated useful life
Statement of Financial Position [Abstract]
Restricted Stock Units
Common Stock Issuable upon Vesting of Restricted Stock Units and Restricted Stock Awards
Restricted Stock Units (RSUs) [Member]
Fair value liabilities level 2 to level 1 transfers amount
Fair Value Liabilities Level 2 To Level 1 Transfer Amount
Fair value liabilities level 2 to level 1 transfers
GEOF
Great Elm Opportunities Fund I, LP [Member]
Great Elm Opportunities Fund I, LP.
Revenue Recognition
Revenue [Policy Text Block]
Number of days volume weighted average price
Number Of Days Volume Weighted Average Price
Number of days volume weighted average price.
Antidilutive Security, Excluded EPS Calculation [Table]
Class of Stock
Class of Stock [Axis]
Total deferred tax liabilities, net
Deferred Tax Liabilities, Net, Total
Deferred Tax Liabilities, Net
Other Receivables
Receivables from managed funds
Current Income Tax Expense (Benefit)
Current Income Tax Expense (Benefit), Total
Current
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Total liabilities
Liabilities
Total Liabilities
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain]
Deferred Tax Assets, Investments
Investment in partnerships
Valuation Technique, Option Pricing Model [Member]
Option Pricing Model
Operating Lease, Lease Income, Lease Payments
Lease income relating to lease payments
Lessee, Operating Lease, Liability, to be Paid, Year Two
For the year ending June 30, 2028
Restricted Stock
Restricted Stock Award
Restricted Stock [Member]
Notice period for annually allowable redemptions
Notice Period For Annually Allowable Redemptions
Notice period for annually allowable redemptions.
Finite-Lived Intangible Assets, Gross, Total
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross
Denominator for diluted EPS - Weighted average shares of common stock outstanding after the effect of dilutive securities
Diluted income (loss) per share
Diluted
Weighted average shares used in computing income (loss) per share, diluted
Entity File Number
Entity File Number
Cover [Abstract]
Measurement Input Type
Measurement Input Type [Axis]
Prepaid and other current assets
Prepaid Expense and Other Assets, Current
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited
Restricted stock awards forfeited
Fair value liability transfers out of level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3
Restricted Stock Awards and Stock Options
Restricted Stock Awards And Stock Options [Member]
Restricted stock awards and stock options.
Long-term debt (face value $26,945)
Other Long-Term Debt, Noncurrent
Real estate under development
Increase Decrease In Real Estate Under Development
Increase decrease in real estate under development.
Scenario [Domain]
Restricted Stock Awards and Restricted Stock Units
Restricted Stock Awards and Restricted Stock Units [Member]
Restricted stock awards and restricted stock units.
Sale of Stock [Domain]
Segment Reporting
Segment Reporting Disclosure [Text Block]
Alternative Investment, Measurement Input
Equity investment measurement input
Equity/Other investment measurement input
Minority Interest [Line Items]
Noncontrolling Interest [Line Items]
Corporate & Other
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Convertible Notes Payable Held By Related Party Non Current
Convertible notes payable to related party non-current
Convertible notes payable held by related party non-current.
Stockholders' Equity
Stockholders Equity Note [Line Items]
Stockholders equity note.
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Total
Forfeited, cancelled or expired
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period
Subsequent Event [Table]
Dividend income
Dividend income
Investment Income, Dividend
Other
Deferred Tax Assets, Other
Percentage of common stock equity ownership issued
Percentage Of Common Stock Equity Ownership Issued Classified As Permanent Equity
Percentage of common stock equity ownership issued classified as permanent equity.
Finite-Lived Intangible Assets, Net, Ending Balance
Finite-Lived Intangible Assets, Net, Beginning Balance
Net Carrying Amount
Identifiable intangible assets, net
Finite-Lived Intangible Assets, Net
Adjustments to Additional Paid in Capital, Warrant Issued
Issuance of warrants
Value of warrants
Total non-controlling interests
Minority Interest Including Temporary Equity And Preferred Stock Classified As Liability
Minority interest including temporary equity and preferred stock classified as liability.
Vested and expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Property, Plant and Equipment, Useful Life
Real estate asset expected useful life
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Adopted and Issued Accounting Standards
Schedule of Maturity Analysis of the Company's Operating Lease Liabilities
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock Issued During Period, Shares, Conversion of Convertible Securities
Number of common stock shares issuable upon conversion of convertible notes
Other
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Ownership
Ownership [Axis]
Vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Amount
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Depreciation, Total
Depreciation
Depreciation expense connection with the asset
Depreciation expense connection with the asset
Other Receivables, Net, Current, Total
Other Receivables, Net, Current
Receivables from managed funds
Lessee, operating lease initial term
Lessee, operating lease term
Lessee, Operating Lease, Term of Contract
Summary of Significant Accounting Policies
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Common stock, shares outstanding
Beginning balance (in shares)
Ending balance (in shares)
Common Stock, Shares, Outstanding
Schedule of Preferred Stock Activity
Schedule Of Preferred Stock Activity Table [Text Block]
Schedule of preferred stock activity.
Current portion of lease liabilities
Operating Lease, Liability, Current
Lease liability
Depreciation, Depletion and Amortization, Total
Depreciation and amortization
Depreciation, Depletion and Amortization
Revenue, Remaining Performance Obligation, Amount
Revenue, remaining performance obligation, amount
Durable Medical Equipment Rental Income
Durable Medical Equipment Rental Income [Member]
Durable medical equipment rental income.
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Document Transition Report
Notes issued in integral multiples.
Notes Issued in Integral Multiples
Notes issued in integral multiples
Operating Expenses
Total operating costs and expenses
Operating expenses
Net operating loss carryforwards description
Operating Loss Carryforwards, Limitations on Use
Cost of Revenue, Total
Cost of revenues
Cost of Revenues
Imperial Capital Asset Management L L C [Member]
Imperial Capital, LLC
Imperial Capital Asset Management, LLC.
ICAM
GECC common shares.
GECC Common Shares
G E C C Common Shares [Member]
Lessee, Operating Leases [Text Block]
Lessee Operating Leases
Disclosunted Cash Flow
Valuation Technique, Discounted Cash Flow [Member]
Net realized and unrealized gain loss on investments of consolidated funds.
Net Realized and Unrealized Gain Loss on Investments of Consolidated Funds
Net realized and unrealized gain (loss) on investments of Consolidated Funds
Net realized and unrealized (loss) gain on investments of Consolidated Funds
Payments for Repurchase of Common Stock
Stock repurchases
Stock repurchases
Schedule of Provision for Income Taxes
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Operating loss carryforward for state income tax
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
PC Elfun, LLC [Member]
PC Elfun, LLC.
PC Elfun
Statement of Cash Flows [Abstract]
Effect of dilutive securities:
Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]
Effect of dilutive securities:
Weighted average grant date fair value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Issuance of common stock related to equity transactions, net
Stock Issued During Period, Value, New Issues
Summary of Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Assets:
Assets, Fair Value Disclosure [Abstract]
Maximum additional consideration payable
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount
Debt securities
Debt
Debt securities
Compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent
Condensed Balance Sheet Statement [Table]
Payments to Acquire Businesses, Net of Cash Acquired, Total
Total purchase consideration, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Acquisition of businesses, net of cash acquired
Acquisition of business
Aggregate cash purchase price
Equity [Text Block]
Equity Transactions
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Earnings Per Share [Text Block]
Earnings per Share
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Activity of Restricted Stock Awards and Restricted Stock Units
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Beginning balance
Ending balance
Other
Deferred Tax Liabilities, Other
Other
Credit Segment [Member]
Credit segment.
Alternative Credit
Cybersecurity Risk Management Processes Integrated [Text Block]
Warrants Exercisability Date
Warrants exercisability date.
Warrants exercisability date
Assets of consolidated funds - cash and cash equivalents.
Assets of Consolidated Funds - Cash and Cash Equivalents
Assets of Consolidated Funds - Cash and cash equivalents
Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Operating lease cost
Operating Lease, Cost
Dividends receivable
Related Party Dividend Receivable
Related party dividend receivable.
Redeemable Preferred stock, redemption price per share
Redeemable Preferred Stock Liability Redemption Price Per Share
Redeemable preferred stock liability redemption price per share.
Warrants and Rights Outstanding, Term
Warrants issuance date term
Operating Loss Carryforward, Percent
Operating Loss Carryforward, Percent.
Operating loss carryforwards percentage
Cash paid for operating leases
Operating Lease, Payments
Operating lease payments
ASSETS
Assets [Abstract]
Increase (Decrease) in Prepaid Expense and Other Assets, Total
Increase (Decrease) in Prepaid Expense and Other Assets
Prepaid and other assets
Document Fiscal Year Focus
Document Fiscal Year Focus
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
GP Corp. Note
Gp Corp Note [Member]
GP Corp note.
Non Cash Interest And Amortization Of Capitalized Issuance Costs
Non cash interest and amortization of capitalized issuance costs.
Non-cash interest and amortization of debt issuance costs
Cash flows from investing activities:
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Accounts Payable, Current, Total
Accounts payable
Accounts Payable, Current
Summary of the Number of Common Shares Available for Future Issuance
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Shares Available Table [Text Block]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Shares Available Table [Text Block]
Lapse of statute of limitations
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
Issuance of notes to related parties.
Issuance Of Notes To Related Parties
Issuance of notes to related parties.
Redemptions of non-controlling interests in Consolidated Funds
Redemption Of Non-controlling Interests Upon Sale Of Subsidiaries
Redemption of non-controlling interests upon sale of subsidiaries.
Additions
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases
Equity Securities, FV-NI, Gain (Loss), Total
Equity Securities, FV-NI, Gain (Loss)
Net realized and unrealized gain (loss) on investments of Consolidated Funds
Investments in marketable securities
Investments in Marketable Securities
Investments in marketable securities.
Great elm strategic partnership I, llc.
Great Elm Strategic Partnership I, LLC [Member]
GESP
Receivable For Real Estate Property Development
Receivable for real estate property development.
Receivable for real estate property development
Finite-Lived Intangible Asset, Expected Amortization, Year One
Estimated Aggregate Amortization Expense, For the year ending June 30, 2027
Summary of Estimated Aggregate Amortization Expense
Finite-Lived Intangible Assets Amortization Expense [Table Text Block]
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Subsidiaries Other Outstanding Borrowings
Subsidiaries Other Outstanding Borrowings [Member]
Subsidiaries other outstanding borrowings.
Temporary equity description
Temporary Equity, Description
Greenfield CRE [Member]
Greenfield CRE.
Greenfield
Lessee, Operating Lease, Liability, to be Paid, Year One
For the year ending June 30, 2027
Net (loss) income attributable to Great Elm Group, Inc. stockholders
Net Income (Loss) Available to Common Stockholders, Basic
Net (loss) income attributable to Great Elm Group, Inc. stockholders
Receivables from Managed Funds
Receivables from Managed Funds [Member]
Receivables from managed funds.
Income tax examination, description
Income Tax Examination, Description
Debt Instrument
Debt Instrument [Axis]
Share-Based Payment Arrangement [Abstract]
Lessee operating lease liability payments due after year three.
Lessee Operating Lease Liability Payments Due After Year Three
Thereafter
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Total unrecognized compensation cost
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Payments
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales
Payments
Total assets
Assets, Fair Value Disclosure
Assets measured at fair value
Sale of Stock [Axis]
Number of rights distributed per common share
Common Stock Dividends Rights Per Share
Represents the number of rights distributed per share of common stock.
Revenues
Net revenues
Total revenue
Revenues
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Net cash flows from investing activities
Fair value asset transfers into level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Transfers In
Redeemable preferred stock redemption premium percentage maximum.
Redeemable preferred stock redemption premium percentage maximum
Redeemable Preferred Stock Redemption Premium Percentage Maximum
Title of each class
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent
Passthrough investment in REV
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Compensation
Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Related Party
Related and Nonrelated Parties [Domain]
Income Taxes
Income Tax Disclosure [Text Block]
Stock Redeemed or Called During Period, Shares
Preferred stock optionally redeemed pro rata basis
Aggregate grant date fair value of restricted stock granted
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value
Share based compensation arrangement by share based payment award equity instruments other than options grants in period grant date fair value.
Document Information [Table]
Other Liabilities, Noncurrent, Total
Other liabilities
Other Liabilities, Noncurrent
Consolidated Entities
Consolidated Entities [Axis]
Changes in operating assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Beginning Balance
Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Income Tax Disclosure [Abstract]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value, Recurring and Nonrecurring [Table]
Business Combination [Text Block]
Acquisition
Unrecognized Tax Benefits, Ending Balance
Unrecognized Tax Benefits, Beginning Balance
Unrecognized tax benefits
Unrecognized Tax Benefits
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Measurement Frequency [Domain]
Change in accounting principle, accounting standards update, adoption date
Change in Accounting Principle, Accounting Standards Update, Adoption Date
Trading Symbol
Trading Symbol
Equity investments
Equity/Other
Equity investments
Schedule Of Finite Lived Intangible Assets [Table]
Intangible Asset, Finite-Lived [Table]
Related party loan receivable
Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties
Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties, Total
Income Taxes [Line Items]
Income Taxes [Line Items]
Income Taxes [Line Items]
Open tax year
Open Tax Year
Schedule Of Related Party Transactions By Related Party [Table]
Related Party Transaction [Table]
Consolidated Investments Assets At Fair Value
Consolidated investments assets at fair value.
Assets of Consolidated Funds - Investments, at fair value
Subsequent Event Type
Subsequent Event Type [Axis]
Schedule of Details of Leases Presented in Balance Sheets
Schedule Of Additional Details Of Lease Presented In Balance Sheet Table [Text Block]
Schedule of additional details of lease presented in balance sheet .
Payroll and other employee-related costs
Employee-related Liabilities, Current
Employee-related Liabilities, Current, Total
Fair value of warrants issued
Fair Value Of Warrants Issued
Fair value of warrants issued.
Fair value of warrants issued
Cash flows from financing activities:
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Related Party Transaction, Purchases from Related Party
Purchases from related party
Fair Value, Recurring [Member]
Fair Value, Recurring Basis
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Noncontrolling Interest Disclosure [Text Block]
Non-Controlling Interests
Imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Restricted stock units and restricted stock awards, deferred
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Deferred
Share-based compensation arrangement by share-based payment award, equity instruments other than options, deferred.
Eric J Scheyer
Eric J Scheyer [Member]
Eric J. Scheyer.
Total Great Elm Group Inc. Stockholders' Equity
Equity Components [Axis]
Weighted average shares outstanding basic and diluted other disclosure.
Weighted Average Shares Outstanding Basic and Diluted Other Disclosure [Abstract]
Weighted average shares outstanding
Equity Component
Equity Component [Domain]
Amortization period of convertible notes debt discount and debt issuance costs
Amortization Period Of Convertible Notes Debt Discount And Debt Issuance Costs
Amortization period of convertible notes debt discount and debt issuance costs.
New office lease.
New Office Lease [Member]
New Office Lease
Goodwill and Intangible Assets Disclosure [Abstract]
Proceeds from Noncontrolling Interests
Contributions to non-controlling interests in Consolidated Funds
Distributions from non-controlling interests in Consolidated Funds
Investments, Total
Investments
Investments, at fair value
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
Schedule of Allocation of Purchase Price to Tangible and Intangible Assets Acquired and Liabilities Assumed
Consolidated Fund
Consolidated Fund [Member]
Consolidated Fund.
Consolidated Funds
Document Annual Report
Document Annual Report
Business Acquisition
Business Combination [Axis]
Percentage entitled of rent collected.
Percentage Entitled Of Rent Collected
Percentage entitled of rent collected
Measurement Input, Option Volatility [Member]
Option Volatility
Investment Income, Interest and Dividend, Total
Dividends and interest income
Investment Income, Interest and Dividend
Dividends and interest income
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation and amortization
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount, Total
Changes in uncertain tax benefits
Federal net operating loss carryforwards
Federal net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Domestic
Maximum
Maximum
Maximum [Member]
Debt Instrument, Convertible, Conversion Ratio
Net consolidated debt to equity ratio
Total liabilities
Liabilities, Fair Value Disclosure
Liabilities measured at fair value
Statistical Measurement
Statistical Measurement [Axis]
Exercised
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common Stock, Value, Issued
Aggregate purchase price
Common stock, $0.001 par value; 350,000,000 shares authorized and 31,139,625 shares issued and 29,778,239 outstanding at June 30, 2026; and 27,630,305 shares issued and 26,552,948 outstanding at June 30, 2025
Consolidated Funds
Consolidated Funds [Member]
Consolidated funds.
Numerator for diluted EPS - Net (loss) income attributable to Great Elm Group, Inc. stockholders after the effect of dilutive securities
Numerator for diluted EPS - Net (loss) income attributable to Great Elm Group, Inc. stockholders after the effect of dilutive securities
Net Income (Loss) Available to Common Stockholders, Diluted
Stockholders Equity Note [Table]
Stockholders Equity Note [Table]
Stockholders equity note.
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Warrants outstanding
Warrants and Rights Outstanding
Total stockholders' equity
Beginning balance
Ending balance
Equity, Including Portion Attributable to Noncontrolling Interest
Total Stockholder's Equity
Stock Issued During Period, Value, Employee Benefit Plan
Stock issued during period, value
Investment in partnerships
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Exchange of common stock for noncontrolling interests
Exchange Of Common Stock For Noncontrolling Interests
Exchange of common stock for noncontrolling interests.
State taxes net of federal impact
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount
Investment in partnerships
Investment in partnerships
Property Management Fees [Member]
Property Management Fees [Member]
Property Management Fees
Accounts payable, accrued expenses and other liabilities
Increase Decrease In Accounts Payable Accrued Liabilities And Other Liabilities
Increase (decrease) in accounts payable, accrued liabilities and other liabilities.
Profit Interest Percentage
Profit Interest Percentage.
Profit interest percentage
Entity Public Float
Entity Public Float
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Percentage of management fee rates
Percentage Of Management Fee Rate
Percentage of management fee rate.
Finite-Lived Intangible Assets by Major Class
Finite-Lived Intangible Assets by Major Class [Axis]
Remaining assets to non-controlling interests
Non-Controlling Interests Remaining Assets
Non-controlling interests remaining assets.
Other reconciling items
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent [Abstract]
Withholding tax payments related to restricted stock
Payment, Tax Withholding, Share-Based Payment Arrangement
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent, Total
Cross-border tax effects
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Revenue
Revenue from Contract with Customer [Text Block]
Schedule Of Business Acquisitions By Acquisition [Table]
Business Combination [Table]
Number of common stock shares issuable upon conversion of each $1000 principal debt amount
Number Of Common Stock Shares Issuable Upon Conversion Of Each Thousand Principal Debt Amount
Number of common stock shares issuable upon conversion of each thousand principal debt amount.
Entity Registrant Name
Entity Registrant Name
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total
Seller note.
Seller Note [Member]
Seller Note
Debt Disclosure [Text Block]
Long-Term Debt
Sales of investments
Proceeds from Sale of Short-Term Investments
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net
Net Transfers
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net, Total
Entity Voluntary Filers
Entity Voluntary Filers
Lessee Disclosure [Abstract]
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Estimated Aggregate Amortization Expense, For the year ending June 30, 2028
Additional Paid in Capital, Ending Balance
Additional Paid in Capital, Beginning Balance
Additional Paid in Capital, Total
Additional paid-in-capital
Additional Paid in Capital
Subsequent Events [Abstract]
Purchases Of Investments By Consolidated Fund
Purchases of investments by consolidated fund.
Purchase of investments
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Consolidated Entities
Consolidated Entities [Domain]
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Estimated Aggregate Amortization Expense, For the year ending June 30, 2029
Income Tax Expense (Benefit)
Income tax expense
Income tax (expense) benefit
Income tax expense (benefit)
Income tax benefit (expense)
Income tax (benefit) expense
Measurement Frequency [Axis]
Stock repurchases
Stock Repurchased During Period, Value
Stock repurchases
Proceeds from Issuance of Common Stock
Proceeds from issuance of common stock
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Payments
Share-based Compensation Arrangement by Share-based Payment Award
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Ranges of Significant Unobservable Inputs used to Value Level 3 Assets
Ranges of Significant Unobservable Inputs used to Value Level 3 Assets
Managed Investment Products
Managed Investment Products [Member]
Managed investment products.
Liabilities of Consolidated Fund - accrued expenses and other
Accrued Expenses And Other Consolidated Funds
Accrued expenses and other consolidated funds.
Accrued expenses and other liabilities
Percentage of ownership interest issued to former owner/holder
Percentage of ownership interest issued to former owner/certain affiliates and employees
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Concentration of Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Revenue recognized
Deferred Revenue, Revenue Recognized
Consolidation Items [Axis]
Convertible Debt [Table Text Block]
Schedule of Convertible Notes
Federal Income Tax Expense (Benefit), Continuing Operations, Total
Federal Income Tax Expense (Benefit), Continuing Operations
Federal tax expense (benefit) at statutory rate
Payment for (Proceeds from) Other Investing Activity
Other
Other
Gain (Loss) on Investments
Gain (Loss) on Investments, Total
Net realized and unrealized (loss) gain on investments
Granted, shares
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Assembled Workforce
Assembled Workforce [Member]
Assembled workforce.
Assembled Workforces
Total assets
Assets
Matthew A. Drapkin
Matthew A Drapkin [Member]
Matthew A. Drapkin.
Investment Management Agreement
Investment Management Agreement [Member]
Investment management agreement.
Investment Management Agreements
Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Income Statement [Abstract]
Reductions for tax positions of prior years
Reductions for tax positions of prior years
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Stock-Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Deferred Income Tax Expense (Benefit), Total
Deferred
Deferred Income Tax Expense (Benefit)
Deferred tax (benefit) expense
Weighted Average [Member]
Weighted Average
Sale of shares of common stock
Sale of Stock, Number of Shares Issued in Transaction
Redeemable preferred stock, annual dividend rate
Redeemable Preferred Stock Liability Dividend Rate Percentage
Redeemable preferred stock liability dividend rate percentage.
Stock Issued During Period, Shares, New Issues
Issuance of common stock related to equity transactions, net (in shares)
Restricted stock awards, service conditions met
Vested
Restricted stock units and restricted stock awards, vested
Shares vested
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Variable Interest Entities
Business Combination [Abstract]
Net loss per share
Diluted
Diluted
Diluted
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Operating Financial Results of Our Operating Segment
Investments, cost basis
Consolidated Investments Cost Basis
Consolidated investments cost basis.
Operating Segments [Member]
Operating Segments
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Estimated Aggregate Amortization Expense, For the year ending June 30, 2031
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Percent
Title of Individual
Title and Position [Domain]
Asset Acquisition [Axis]
City Area Code
City Area Code
The Forest Note
Promissory Note [Member]
Promissory Note
Promissory Note
Funds
G E C C And Other Private Funds Managed By G E C M [Member]
GECC and other private funds managed by GECM (collectively, the “Funds”).
Fair Value Measurements [Table]
Fair Value Measurements.
Auditor Name
Licensing Agreements [Member]
Licenses
Net Accretion
Fair value, measurement with unobservable inputs reconciliation, recurring basis, asset, net accretion.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Net Accretion
Net Accretion
Notes issued in minimum denominations.
Notes Issued in Minimum Denominations
Notes issued in minimum denominations
Aggregate principal amount
Total principal balance of Convertible Notes outstanding
Promissory note, issued
Convertible notes, face value
Charleston, South Carolina
SOUTH CAROLINA
Business Acquisition [Line Items]
Business Combination [Line Items]
Stock issued during period value vested immediately
Stock Issued During Period Value Vested Immediately
Stock issued during period value vested immediately.
Issuance of notes.
Notes issued
Issuance of notes payable
Issuance Of Notes
Convertible Notes
Convertible Debt, Noncurrent
Convertible notes (face value $36,838 and $35,063, including $17,853 and $16,993 held by related parties, respectively)
Schedule of Payments and Interest Expense Incurred
Schedule Of Notes Payable Related Parties Payments And Interest Expense Table [Text Block]
Schedule of notes payable related parties payments and interest expense.
Variable lease cost
Variable Lease, Cost
Total intrinsic value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested
Weighted-average remaining life
Operating Lease, Weighted Average Remaining Lease Term
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Shared Services Agreements
Shared Services Agreements [Member]
shared services agreements.
Increase (decrease) in operating capital of consolidated funds.
Increase (Decrease) In Operating Capital of Consolidated Funds [Abstract]
Changes in operating assets and liabilities of Consolidated Funds:
Segment Reporting Information [Line Items]
Issuance of common stock related to vesting of restricted stock (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Derivative Liability, Fair Value, Gross Liability, Total
Fair value of derivative liability
Derivative Liability, Subject to Master Netting Arrangement, before Offset
GEGGL notes.
GEGGL Notes [Member]
GEGGL Notes
Contributions To Consolidated Funds
Contributions to consolidated funds.
Contributions to Consolidated Funds
Administration and Service Fees
Administration and Service Fees [Member]
Administration and service fees.
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, cash equivalents and restricted cash at end of period
Cash, cash equivalents and restricted cash at beginning of period
Operating loss
Operating Income (Loss)
Operating loss
Effective Income Tax Rate Reconciliation, Provision to return and other deferred tax
Effective Income Tax Rate Reconciliation, Provision to return and other deferred tax.
Provision to return and other deferred tax
Accumulated Deficit
Retained Earnings [Member]
Share-based Payment Arrangement, Noncash Expense, Total
Stock-based compensation
Stock-based compensation
Share-Based Payment Arrangement, Noncash Expense
Employees
Employees [Member]
Employees.
Monomoy Properties REIT, LLC.
Monomoy Properties REIT, LLC [Member]
Monomoy Properties REIT, LLC
Stock-based compensation (in shares)
Adjustments To Additional Paid In Capital Share Based Compensation Requisite Service Period Recognition Shares
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Shares
Summit Grove Partners LLC [Member]
Summit grove partners LLC.
Summit Grove Partners, LLC
SGP
Weighted-average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Lease liabilities, net of current portion
Operating Lease, Liability, Noncurrent
Fair Value, Inputs, Level 1
Fair Value, Inputs, Level 1 [Member]
Level 1
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by financing activities
Net cash flows from financing activities
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)
Change in net unrealized appreciation/depreciation included in earnings related to financial assets still held at the reporting date
Schedule of Operating and Variable Lease Cost
Lease, Cost [Table Text Block]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract]
Nontaxable or nondeductible items
Change in accounting principle, accounting standards update, adopted [true false]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]
Customer-Related Intangible Assets [Member]
Customer Related
Auditor Location
Investments, Fair Value Disclosure, Total
Investments valued at net asset value
Investments, Fair Value Disclosure
Summary Of Non Controlling Interest Balance On Consolidated Statements Of Operations Table [Text Block]
Summary of non-controlling interest balance on consolidated statements of operations.
Summary of Non-controlling Interests Balance on Consolidated Statements of Operations
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Payments
Sales and Paydowns
Sales and Paydowns
Administration and service fee receivable
Administration and Service Fee Receivable
Administration and service fee receivable.
Basis Of Presentation And Use Of Estimates Policy Policy [Text Block]
Basis of Presentation and Use of Estimates
Basis of presentation and use of estimates.
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
Income Tax Authority
Income Tax Jurisdiction [Domain]
Entity Interactive Data Current
Entity Interactive Data Current
Deferred Tax Liabilities:
Deferred Tax Liabilities, Gross [Abstract]
Cash flows from operating activities:
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Forest
Forest Investments, Inc. (Forest)
Forest Investments Inc [Member]
Forest Investments, Inc.
Accruals and allowances not deductible for tax purposes
Deferred Tax Assets Accruals And Allowances Not Deductible For Tax Purposes
The accumulated amount before valuation allowance of increases (decreases) to deferred tax assets attributable to accruals and allowances that are not deductible for tax purposes.
Paid-in-kind interest
Paid-in-Kind Interest
Change in fair value
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Project management fees.
Project Management Fees [Member]
Project Management Fees
Effect of dilutive securities:
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Effect of dilutive securities:
Real Estate Rental Income [Member]
Real Estate Rental Income [Member]
Real Estate Rental Income
Entity Tax Identification Number
Entity Tax Identification Number
Long-term Debt, Type
Long-Term Debt, Type [Axis]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Change in fair value
Change in fair value
Summary Of Non Controlling Interest Balance On Consolidated Balance Sheet Table [Text Block]
Summary of non-controlling interest balance on consolidated balance sheet.
Summary of Non-controlling Interests Balance on Consolidated Balance Sheet
Gain (loss) on sale of real estate.
Gain (Loss) on Sale of Real Estate
Gain on sale of real estate
Local Phone Number
Local Phone Number
Related Party Transaction
Related Party Transaction [Domain]
Consideration in exchange for instrument
Consideration In Exchange For Instrument
Consideration in exchange for instrument.
Net Realized and Unrealized Gains/(Losses) on Investments
Net Realized and Unrealized Gains/(Losses) on Investments [Policy Text Block]
Net Realized and Unrealized Gains/(Losses) on Investments.
Auditor Opinion [Text Block]
Net realized and unrealized gains (losses) on investments from consolidated funds.
Net Realized and Unrealized Gains (Losses) on Investments from Consolidated Funds
Net realized and unrealized (gains) losses on investments
Net realized and unrealized gain on investments
Net realized and unrealized loss (gain) on investments
Other Non-Cash Compensation
Other Non-Cash Compensation [Policy Text Block]
Other Non-Cash Compensation.
Measurement Input, Revenue Multiple [Member]
Revenue Multiples [Member]
Earnings Multiple
InvestmentsInPortfolioFunds
InvestmentsInPortfolioFunds
Investments in portfolio funds
Investments in portfolio funds
Rights plan restriction, maximum percentage of common stock a person or an entity can acquire
Rights Plan Restriction Maximum Percentage Of Common Stock A Person Or An Entity Can Acquire
Maximum percentage of common stock a person or an entity can acquire
Accounting Policies [Abstract]
Disaggregation Of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Revenues
Total product and services revenue
Revenue from Contract with Customer, Excluding Assessed Tax, Total
Redeemable Non-controlling Interest in Consolidated Funds
Redeemable Non-controlling Interest in Consolidated Funds [Member]
Redeemable Non-controlling Interest in Consolidated Funds.
Schedule of Related Party Borrowings of Subsidiaries
Schedule Of Notes Payable Related Parties Table [Text Block]
Schedule of notes payable related parties.
Class of Stock
Class of Stock [Domain]
Employee expenses
Compensation and benefits
Compensation and benefits
Stock-based compensation period for recognition
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Debt issuance costs amortization period
Debt Issuance Costs Amortization Period
Debt issuance costs amortization period.
Expire in Fiscal Years 2024 Through 2025
Expire in Fiscal Years Two Thousand Twenty Four Through Two Thousand Twenty Five [Member]
Expire in fiscal years two thousand twenty four through two thousand twenty five.
Entity Emerging Growth Company
Entity Emerging Growth Company
Vested and expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill
Preliminary purchase price