75000 - Document - Document and Entity Information
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75010 - Statement - Consolidated Balance Sheets (Unaudited)
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75020 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical)
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75030 - Statement - Consolidated Statements of Operations (Unaudited)
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75040 - Statement - Consolidated Statements of Comprehensive Income (Unaudited)
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75050 - Statement - Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical)
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75060 - Statement - Consolidated Statements of Changes in Stockholders' Equity and Mezzanine Equity (Unaudited)
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75070 - Statement - Consolidated Statements of Cash Flows
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75080 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995455 - Disclosure - Business
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995465 - Disclosure - Summary of Significant Accounting Policies
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995475 - Disclosure - Recent Accounting Pronouncements
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995485 - Disclosure - Revenue
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995495 - Disclosure - Accounts Receivable, net
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995505 - Disclosure - Inventories
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995515 - Disclosure - Property and Equipment, net
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995525 - Disclosure - Intangible Assets, Goodwill, Acquisitions and Divestitures
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995535 - Disclosure - Accrued Expenses and Other Current Liabilities
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995545 - Disclosure - Long-Term Debt
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995555 - Disclosure - Fair Value Measurements and Derivative Instruments
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995565 - Disclosure - Income Taxes
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995575 - Disclosure - Leases
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995585 - Disclosure - Equity-Based Compensation
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995595 - Disclosure - Commitment and Contingencies
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995605 - Disclosure - Segments
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995615 - Disclosure - Mezzanine Equity
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995625 - Disclosure - Earnings (Loss) Per Share of Common Stock
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995635 - Disclosure - Subsequent Events
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995645 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995655 - Disclosure - Revenue (Tables)
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995665 - Disclosure - Inventories (Tables)
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995675 - Disclosure - Property and Equipment, net (Tables)
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995685 - Disclosure - Intangible Assets, Goodwill, Acquisitions and Divestitures (Tables)
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995695 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables)
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995705 - Disclosure - Long-Term Debt (Tables)
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995715 - Disclosure - Fair Value Measurements and Derivative Instruments (Tables)
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995725 - Disclosure - Income Taxes (Tables)
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995735 - Disclosure - Leases (Tables)
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995745 - Disclosure - Equity-Based Compensation (Tables)
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995755 - Disclosure - Segments (Tables)
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995765 - Disclosure - Earnings (Loss) Per Share of Common Stock (Tables)
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995775 - Disclosure - Business - Additional Information (Details)
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995785 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995795 - Disclosure - Recent Accounting Pronouncements - Additional Informaiton (Details)
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995805 - Disclosure - Revenue - Additional Information (Details)
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995815 - Disclosure - Revenue - Schedule of Reportable Segment Revenues, Disaggregated by Revenue (Details)
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995825 - Disclosure - Revenue - Additional Information (Details 1)
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995835 - Disclosure - Revenue - Schedule of Changes in Deferred Revenue (Details)
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995845 - Disclosure - Accounts Receivable, Net - Additional Information (Details)
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995855 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details)
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995865 - Disclosure - Property and Equipment, Net - Additional Information (Details)
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995875 - Disclosure - Intangible Assets, Goodwill, Acquisitions and Divestitures - Additional Information (Details)
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995885 - Disclosure - Intangible Assets, Goodwill, Acquisitions and Divestitures - Schedule of Intangible Assets (Details)
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995895 - Disclosure - Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details)
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995905 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details)
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995915 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details) 2
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995925 - Disclosure - Long-Term Debt - Additional Information (Details)
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995935 - Disclosure - Long-Term Debt - Scheduled Maturities of Long-Term Debt (Details)
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995945 - Disclosure - Long-Term Debt - Scheduled Maturities of Long-Term Debt (Details) 2
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995955 - Disclosure - Fair Value Measurements and Derivative Instruments - Additional Information (Details)
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995965 - Disclosure - Fair Value Measurements and Derivative Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)
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995975 - Disclosure - Fair Value Measurements and Derivative Instruments - Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges (Details)
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995985 - Disclosure - Income Taxes - Schedule of Components of Income Tax Expense (Benefit) and Effective Income Tax Rate (Details)
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995995 - Disclosure - Leases - Additional Information (Details)
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996005 - Disclosure - Leases - Summary of Lease-Related Assets and Liabilities (Details)
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996015 - Disclosure - Leases - Summary of Weighted-average Remaining Lease Terms and Incremental Borrowing Rates (Details)
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996025 - Disclosure - Leases - Summary of Components of Lease Cost for Operating and Finance Leases (Details)
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996035 - Disclosure - Leases - Summary of Supplemental Cash Flow Information (Details)
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996045 - Disclosure - Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Details)
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996055 - Disclosure - Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Details) 2
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996065 - Disclosure - Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Details) 3
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996075 - Disclosure - Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Details) 4
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996085 - Disclosure - Equity-Based Compensation - Additional Information (Details)
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996095 - Disclosure - Equity-Based Compensation - Summary of Company's Restricted Stock Award Activity (Details)
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996105 - Disclosure - Equity-Based Compensation - Summary of Company's Restricted Stock Unit Activity (Details)
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996115 - Disclosure - Equity-Based Compensation - Summary of Company's Stock Options Activity (Details)
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996125 - Disclosure - Equity-Based Compensation - Summary of Company's Performance Stock Unit Activity (Details)
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996135 - Disclosure - Commitment and Contingencies - Additional Information (Details)
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996145 - Disclosure - Segments - Additional Information (Details)
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996155 - Disclosure - Segments - Summary of Certain Financial Data For Each of Segments and Reconciliation of Segment Adjusted EBITDA to Income (Loss) Before Income Taxes (Details)
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996165 - Disclosure - Mezzanine Equity - Additional Information (Details)
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996175 - Disclosure - Earnings (Loss) Per Share of Common Stock - Reconciliation of Numerator and Denominator for Basic and Diluted (Loss) Earnings Per Share Calculation (Details)
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996185 - Disclosure - Subsequent Event - Additional Information (Details)
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Proceeds from Sale of Property, Plant, and Equipment
Proceeds from sale of property and equipment
Proceeds from Sale of Property, Plant, and Equipment, Total
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments, Ending Balance
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments, Beginning Balance
Claims recoverable from third party insurance carriers
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments, Total
Noncash or part noncash divestiture, amount of consideration received.
Noncash Or Part Noncash Divestiture Amount Of Consideration Received
Noncash or part noncash divestiture, amount of consideration received
Segments [Domain]
Segments
Finance Lease, Liability
Total finance lease liabilities
Derivatives and Fair Value [Text Block]
Fair Value Measurements and Derivative Instruments
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Finance Lease, Liability, to be Paid, Year Four
2029
Preferred Stock, Shares Issued
Preferred stock, issued
Preferred Stock, Shares Issued, Total
Preferred stock issued and sold
Statement of Financial Position Location, Balance [Domain]
Balance Sheet Location
Long-Term Debt, Excluding Current Maturities
Total long-term debt, net
Long-term Debt, Excluding Current Maturities, Total
Long-term debt, net
Schedule of Long-Term Debt Instruments [Table Text Block]
Schedule of Long-Term Debt
Plan Name [Axis]
Plan Name
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Customer relationships and non-compete agreements.
Customer Relationships And Non Compete Agreements [Member]
Customer Relationships and Non-compete Agreements
Fair Value, Inputs, Level 2 [Member]
Level 2 Inputs
Level 2
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Cash Flow Hedging [Member]
Cash Flow Hedges
Common Stock, Shares Authorized
Common stock, authorized
Reverse stock split.
Reverse Stock Split Policy [Text Block]
Reverse Stock Split
Product and Service [Axis]
Product and Service
Document Fiscal Period Focus
Document Fiscal Period Focus
Other Noncurrent Liabilities [Member]
Other Liabilities
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Other Accrued Liabilities, Current
Other accruals
Insurance policy.
Insurance Policy [Member]
Insurance Policy
Debt Instrument, Unamortized Discount, Noncurrent
Less: Original issue discount
Cash and Cash Equivalent
Cash and cash equivalents, end of period
Cash and cash equivalents, beginning of period
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Schedule of Maturities of Long-Term Debt [Table Text Block]
Scheduled Maturities of Long-Term Debt
Preferred Stock, Redemption Terms
Terms of redemption
Contract with customer unbilled revenue additions.
Contract With Customer Unbilled Revenue Additions
Contract with customer unbilled revenue additions
Number of Reporting Units
Number of identified reporting units
Finance lease cost.
Finance Lease Cost
Total finance lease cost
Receivable Type [Axis]
Receivable Type
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common Stock, Shares, Issued
Common stock, issued
Common Stock, Shares, Issued, Total
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Statement [Table]
Statement [Table]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-use Assets Obtained In Exchange For New Operating Liabilities
Share-Based Payment Arrangement, Disclosure [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Stock options weighted average grant date fair value
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, before Tax
Income (loss) recognized in Other comprehensive income (loss)
Statement [Line Items]
Statement [Line Items]
Business Combination [Domain]
Entity Filer Category
Entity Filer Category
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassification
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Reclassification Adjustment from AOCI for Derecognition, after Tax
Reclassification of (gains) losses into net (loss) income, net of tax (expense) of $(3.8); $(0.3); and $(1.2), respectively
Reclassification of (gains) into net income, net of tax (expense) of $(0.1); $(0.3); $(0.3) and $(0.8), respectively
Liabilities and Equity
Total liabilities, mezzanine equity and stockholders' equity
Vehicles [Member]
Transportation Vehicles
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Payables and Accruals [Abstract]
Long-Term Debt, Current Maturities
Less: Current portion of long-term debt
Long-term Debt, Current Maturities, Total
Less: Current maturities
Long-Term Debt, Maturity, Year Three
2029
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Exercise Price, Vested and Exercisable at March 31, 2026
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Finance Lease, Liability, to be Paid, Year Three
2028
Hedging Relationship [Axis]
Cash Flow Hedges
Percentage of principle balance used to calculate amount of quarterly installments due.
Percentage Of Principle Balance Used To Calculate Amount Of Quarterly Installments Due
Percentage of principle balance used to calculate debt repayments amount of quarterly installments due
Business Combination, Voting Equity Interest Acquired, Percentage
Acquisition of operations, Percentage
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Proceeds from Issuance of Debt
Proceeds from receivables financing agreement, net of issuance costs
Debt borrowings during the period
Derivative [Line Items]
Derivative [Line Items]
Extinguishment of Debt, Amount
Extinguishment of debt, amount
Shares Issued, Price Per Share
Initial offering price
Subsequent Event [Line Items]
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
Goodwill
Ending balance
Beginning balance
Goodwill
Goodwill, Total
Ending balance
Effective Income Tax Rate Reconciliation, Percent
Total income tax (benefit) expense percentage
Effective income tax rate
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList
Treasury Stock, Common, Value
Treasury stock, at cost; 17,800,000 and 15,200,000 shares as of March 31, 2026 and September 30, 2025, respectively
Finance leases.
Finance Leases [Abstract]
Finance leases:
Increase (Decrease) in Accounts Payable and Other Operating Liabilities
Accounts payable and other operating liabilities
Amended and restated two thousand and eighteen omnibus incentive plan.
Amended And Restated Two Thousand And Eighteen Omnibus Incentive Plan [Member]
Amended and Restated 2018 Omnibus Incentive Plan
Segment, Expenditure, Addition to Long-Lived Assets
Capital Expenditures
Schedule of Inventory, Current [Table Text Block]
Schedule of Inventories
Accounts Receivable, Allowance for Credit Loss
Accounts Receivable, Allowance for Credit Loss, Ending Balance
Accounts Receivable, Allowance for Credit Loss, Beginning Balance
Allowance for doubtful accounts
Additional Paid in Capital, Common Stock
Additional Paid in Capital, Common Stock, Ending Balance
Additional Paid in Capital, Common Stock, Beginning Balance
Additional paid-in capital
Debt Issuance Costs, Net
Debt Issuance Costs, Net, Total
Financing costs, net
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Property, Plant and Equipment [Line Items]
Property Plant And Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life
Estimated Useful Life
Debt instrument, maturity date description
Debt Instrument, Maturity Date, Description
Disaggregation of Revenue [Table]
Disaggregation Of Revenue [Table]
Construction Contractor, Receivable, Including Contract Retainage, Year One
Amounts of retention on incomplete project
Cybersecurity Risk Management, Strategy, and Governance [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Reconciliation of Numerator and Denominator for Basic and Diluted (Loss) Earnings Per Share Calculation
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net
Gain on reclassification of other comprehensive income to earnings
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net, Total
Investments held by rabbi trust.
Investments Held By Rabbi Trust [Member]
Investment Held by Rabbi Trust
Proceeds from Issuance of Preferred Stock and Preference Stock
Proceeds from issuance of Series A preferred stock, net of issuance costs
Dividends Payable
Accrued dividends
Earnings Per Share, Basic
Earnings Per Share, Basic, Total
Basic earnings (loss) per share
Basic loss per share
Basic (loss) per share
Disaggregation of Revenue [Table Text Block]
Schedule of Reportable Segment Revenues, Disaggregated by Revenue
Repayments of Long-Term Debt
Repayments of Long-term Debt, Total
Debt voluntary repayment
Repayments of receivables financing agreement
Scenario one.
Scenario One [Member]
Scenario One Depending on Leverage Ratio
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Outstanding at September 30, 2025
Outstanding at March 31, 2026
Derivative, Nonmonetary Notional Amount, Volume
Notional volume
Revolving Credit Facility [Member]
Revolving Credit Facility
Finite-Lived Intangible Assets Acquired
Intangible assets acquired
Liabilities, Current
Total current liabilities
Current portion of finance lease liabilities
Current Portion of Finance Lease Liabilities
Current portion of finance lease liabilities
Increase (Decrease) in Accounts Receivable
Accounts receivable
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net (loss) to net cash provided by operating activities:
Lessee, Operating Lease, Liability, to be Paid, Year Five
2030
Hedging Designation [Domain]
Hedging Designation
Debt instrument carrying amount net of issue discount.
Debt Instrument Carrying Amount Net Of Issue Discount
Debt instruments net of original issue discount
Scenario two.
Scenario Two [Member]
Scenario Two Depending on Leverage Ratio
Preferred Stock, Convertible, Down Round Feature, Decrease in Net Income to Common Shareholder, Amount
Less: Earnings allocated to Convertible Preferred Shares
Less: Earnings allocated to Convertible Preferred Shares
Lessee operating lease liability payments net.
Lessee Operating Lease Liability Payments Net
Total net lease payments
Accounting Standards Update [Axis]
Accounting Standards Update
Consolidation Items [Domain]
Consolidation Items
Equity, Attributable to Parent [Abstract]
Stockholders’ equity:
Entity Small Business
Entity Small Business
Hedging Designation [Axis]
Designated
Commodity Contract [Member]
Fuel Derivative Contracts
Fuel hedges
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Ending Balance
Retained Earnings (Accumulated Deficit), Beginning Balance
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02
Preferred Stock [Member]
Preferred Shares
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Proceeds from Issuance Initial Public Offering
Net proceeds from the issuance of common stock
Sale of Stock, Price Per Share
Aggregate purchase price
Other Current Assets [Member]
Other Current Assets
Interest period term.
Interest Period Term
Interest period term
Share-Based Payment Arrangement [Text Block]
Equity-Based Compensation
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Self Insurance Reserve [Policy Text Block]
Self-Insurance Reserves
Series A convertible preferred stock member.
Series A Convertible Preferred Stock [Member]
Leases [Abstract]
Weighted Average Number of Shares Outstanding, Diluted, Adjustment
Stock compensation awards
Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total
Amendment Flag
Amendment Flag
Product and Service [Domain]
Product and Service
Inventory Disclosure [Text Block]
Inventories
Finance Lease, Interest Expense
Interest on lease liabilities
Liabilities and Equity [Abstract]
Liabilities and stockholders’ equity
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock [Member]
Common Stock
Accounting Standards Update and Change in Accounting Principle [Table]
Cybersecurity Risk Role of Management [Text Block]
Long-Term Debt, Maturity, Year One
2027
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Granted, weighted average exercise price
Weighted average distribution price per share of PSU
Hedging Relationship [Domain]
Hedging Relationship
Accrued expenses and other current liabilities.
Accrued Expenses And Other Current Liabilities [Member]
Accrued Expenses and Other Current Liabilities
Increase decrease in unbilled and deferred Revenue.
Increase Decrease In Unbilled And Deferred Revenue
Unbilled and deferred revenue
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Less: Accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Debt Instrument, Interest Rate, Effective Percentage
Debt instrument, effective interest rate
Portion at Fair Value Measurement [Member] [Default]
Portion at Fair Value Measurement [Member]
Fair Value Disclosure Item Amounts [Default]
Entity Address, Address Line One
Entity Address, Address Line One
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Schedule of Weighted-Average Assumptions Used in Valuation of PSU Awards Subject to Market Condition and Stock Option Awards Granted
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Earnings Per Share [Abstract]
Earnings (loss) per share:
Income Tax, Policy [Policy Text Block]
Income Taxes
Temporary Equity, Carrying Amount, Attributable to Parent
Convertible preferred stock
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information:
Goodwill and Intangible Assets Disclosure [Text Block]
Intangible Assets, Goodwill and Acquisitions
Adjusted base rate.
ABR [Member]
ABR
Statement of Financial Position Location, Balance [Axis]
Balance Sheet Location
Investment Type [Axis]
Investment Type
Operating Lease, Right-of-Use Asset
Operating lease assets
Right-of-use asset
Finance Lease, Liability, Undiscounted Excess Amount
Less: Amounts representing interest
Less: Amounts representing interest
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Inventory Disclosure [Abstract]
Document Type
Document Type
Goodwill and Intangible Assets, Policy [Policy Text Block]
Goodwill and Other Intangible Assets
Income Taxes Paid, Net
Total
Cash paid for income taxes, net
Gross Profit
Gross profit
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative
Entity Central Index Key
Entity Central Index Key
Entity Central Index Key
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Prime Rate [Member]
Prime Rate
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net change in cash and cash equivalents
Subsequent Event Type [Domain]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted average number of anti-dilutive Series A convertible preferred shares, options and restricted stock(a)
Net income (loss) attributable to common stockholders.
Net Income (Loss) Attributable to Common Stockholders
Net income (loss) attributable to common stockholders
Net (loss) attributable to common stockholders
Common Stock, Par or Stated Value Per Share
Common stock, par value
Accounting Standards Update [Domain]
Accounting Standards Update
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Other comprehensive income (loss), net of tax
Other comprehensive income (loss)
Lessee operating lease and finance lease liability maturity.
Lessee Operating Lease And Finance Lease Liability Maturity Table [Text Block]
Summary of Maturities of Operating and Finance Lease Liabilities
Number of unrelated maintenance services companies acquired.
Number Of Unrelated Maintenance Services Companies Acquired
Number of unrelated maintenance services companies acquired
Interest rate collar agreement.
Interest Rate Collar Agreement [Member]
Interest Rate Collar Agreement
Document Financial Statement Error Correction [Flag]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Number of shares exercised
Exercised
Debt Disclosure [Abstract]
Derivative [Table]
Derivative [Table]
Business.
Business [Line Items]
Business [Line Items]
Derivative, Notional Amount
Notional amount
Accrued Liabilities, Current
Accrued expenses and other current liabilities
Ownership [Domain]
Ownership
Current Fiscal Year End Date
Current Fiscal Year End Date
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Table]
Commitments and contingencies.
Commitments And Contingencies [Line Items]
Commitments And Contingencies [Line Items]
Non-cash items.
Non Cash Items [Abstract]
Non-cash items:
Document Quarterly Report
Receivables [Abstract]
Customer Relationships [Member]
Customer Relationships
Entity Address, State or Province
Entity Address, State or Province
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Ending balance, Outstanding
Beginning balance, Outstanding
Units outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred stock, outstanding
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income (loss)
Contract with Customer, Liability, Revenue Recognized
Recognition of revenue
Recognition of revenue
Revenue, Practical Expedient, Financing Component [true false]
Revenue, practical expedient, financing component
Finance Lease, Liability, to be Paid, after Year Five
Thereafter
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Accrued Expenses and Other Current Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Components of Net Deferred Tax Asset and Liability Accounts
Performance Shares [Member]
Performance Shares
Long-Term Debt, Fair Value
Long-term debt, fair value
Subsequent Event
Subsequent Event [Member]
Long-Term Debt, Maturity, Remainder of Fiscal Year
2026
Share-based compensation before tax.
Share Based Compensation Before Tax
Equity-based compensation
Property, Plant and Equipment [Abstract]
Other Assets, Noncurrent
Other assets
Other Assets, Noncurrent, Total
Reverse stock split effective date.
Reverse Stock Split Effective Date
Reverse stock split effective date
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Performance Stock unit awards vesting rights percentage
Debt Instrument, Unamortized Discount
Debt instrument, original discount
Debt Instrument, Unamortized Discount, Total
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive (Loss) Income
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name
Treasury Stock, Common, Shares
Treasury stock, shares
Goodwill, Impairment Loss
Goodwill impairment
Impairment Loss
Percentage of initial conversion price of common stock.
Percentage of Initial Conversion Price of Common Stock
Percentage of initial conversion price of common stock
Employee stock purchase plan.
Employee Stock Purchase Plan [Member]
ESPP
Preferred Stock, Value, Issued
Preferred Stock, Value, Issued, Ending Balance
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Total
Preferred Stock, net of issuance costs
Preferred stock, $0.01 par value; 50,000,000 shares authorized; no shares issued or outstanding as of March 31, 2026 and September 30, 2025
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Identifiable assets acquired related to intangible assets
Selling, General and Administrative Expense
Selling, general and administrative expense
Selling, General and Administrative Expense, Total
Debt Instrument, Maturity Date
Debt instrument, maturity date
Minimum [Member]
Minimum
Derivative Asset, Subject to Master Netting Arrangement, before Offset
Total assets
Derivative Asset, Fair Value, Gross Asset, Total
Assets, Current [Abstract]
Current assets:
Amortization expense
Amortization of Intangible Assets
Amortization of intangible assets
Amortization of Intangible Assets, Total
Fair Value, Inputs, Level 3 [Member]
Level 3
Segment Reporting [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis
Current liabilities:
Liabilities, Current [Abstract]
Accrued operating expenses current.
Accrued Operating Expenses Current
Accrued operating expenses
Series A preferred stock dividend.
Series A Preferred Stock Dividend
Series A preferred stock dividend
Shares, Outstanding
Balance, Shares
Balance, Shares
Sublease Income
Sublease income
Accounts Receivable, after Allowance for Credit Loss, Current
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts receivable
Finance lease liability payments net.
Finance Lease Liability Payments Net
Total net lease payments
Interest Rate Contract [Member]
Interest Rate Contracts
Interest Rate Derivative Contracts
Leased assets.
Leased Assets [Line Items]
Leased Assets Line Items
Lessee, Leases [Policy Text Block]
Leases
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, 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, Ending Balance
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance
Weighted average exercise price
Schedule of lease related assets and liabilities.
Schedule Of Lease Related Assets And Liabilities Table [Text Block]
Summary of Lease-Related Assets and Liabilities
Operating Lease, Liability
Total operating lease liabilities
Auditor Firm ID
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, basis spread on variable rate
Stockholders' Equity, Reverse Stock Split
Reverse stock split description
Forecast [Member]
Forecast
Schedule of Goodwill [Table Text Block]
Summary of Goodwill
Debt Issuance Costs, Noncurrent, Net
Less: Financing costs
Debt Issuance Costs, Noncurrent, Net, Total
Long-Term Debt, Maturity, Year Two
2028
Finance Lease, Liability, Current
Current portion of lease liabilities
Less: Current portion of lease liabilities
Finance Lease, Weighted Average Discount Rate, Percent
Weighted-average incremental borrowing rate
First Lien credit facility term loan.
First Lien Credit Facility Term Loan [Member]
First Lien Credit Facility Term Loans
Interest Income (Expense), Operating
Interest Income (Expense), Operating, Total
Interest expense, net
Capital Expenditures Incurred but Not yet Paid
Accrual for property and equipment
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total
Net (loss)
Net (loss)
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Other non-cash activities
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount
Reserve for unpaid and incurred but not reported claims, amount
Long-Term Debt, Type [Domain]
Long-term Debt, Type
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Weighted Average Number of Shares Outstanding, Basic
Weighted average number of common shares outstanding – basic
Weighted Average Number of Shares Outstanding, Basic, Total
Scenario
Scenario [Axis]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Income Tax Expense (Benefit) Differs from Amount Computed at Federal Statutory Corporate Tax Rate
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Segments [Axis]
Segments
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset
Summary of weighted-average remaining lease terms and incremental borrowing rates.
Summary Of Weighted Average Remaining Lease Terms And Incremental Borrowing Rates Table [Text Block]
Summary of Weighted-average Remaining Lease Terms and Incremental Borrowing Rates
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
Subsequent Events [Text Block]
Subsequent Events
Long-Term Debt
Total debt, net
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Equity-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Variable Rate [Domain]
Variable Rate
Equity, Attributable to Parent
Balance
Balance
Cumulative effect on retained earnings
Total stockholders’ equity
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Statement of Stockholders' Equity [Abstract]
Recurring annual contract period.
Recurring Annual Contract Period
Recurring annual contract period
Cost of Goods and Service [Policy Text Block]
Cost of Services Provided
Series A Preferred Stock [Member]
Series A Convertible Preferred Stock
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Treasury Stock, Common [Member]
Treasury Stock
Treasury Stock [Member]
Entity Address, Address Line Two
Entity Address, Address Line Two
Product Information [Line Items]
Product Information [Line Items]
Previous revolving credit facility.
Previous Revolving Credit Facility [Member]
Previous Revolving Credit Facility
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Stock Options
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Accrued Expenses and Other Current Liabilities
Other Assets, Current
Other current assets
Accrued Liabilities and Other Liabilities
Accrued expenses and other current liabilities
Accrued Liabilities and Other Liabilities, Total
Long-Term Debt, Maturity, Year Four
2030
Initial public offering.
Initial Public Offering Policy Policy [Text Block]
Initial Public Offering
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Segment Reporting, Other Segment Item, Amount
Other segment items
Plan Name [Domain]
Plan Name
Increase (Decrease) in Other Operating Assets
Increase (Decrease) in Other Operating Assets, Total
Other operating assets
Interest Expense, Total
Interest Expense, Operating and Nonoperating
Interest expense
Interest expense, net
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]
Receivable [Policy Text Block]
Accounts Receivable
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date
Entity [Domain]
Entity
Credit Facility [Axis]
Credit Facility
Series B term loan member.
Series B Term Loan [Member]
Series B Term Loan
Cost of Product and Service Sold
Cost of services provided
Cost of Goods and Services Sold, Total
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Business Description and Basis of Presentation [Text Block]
Business
Operating and finance lease liability.
Operating And Finance Lease Liability
Lease liability
Schedule of components of income taxes paid net of refunds.
Schedule of Components of Income Taxes Paid Net of Refunds [Table Text Block]
Schedule of Components of Income Taxes Paid (Net of Refunds)
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Finance Lease, Liability, to be Paid, Year One
2026
Deferred Charges, Policy [Policy Text Block]
Financing Costs
Other Noncurrent Assets [Member]
Other Assets
Percentage of cumulative dividend.
Percentage of Cumulative Dividend
Dividend rate
Percentage of cumulative dividend
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Operating Lease Liability, Payment Due [Abstract]
LIBOR Member
LIBOR [Member]
LIBOR
Property, Plant and Equipment, Policy [Policy Text Block]
Property and Equipment
Accounting Standards Update [Extensible Enumeration]
Accounting Standards Update [Extensible List]
Entity Address, City or Town
Entity Address, City or Town
Stock Repurchased During Period, Shares
Repurchase of common stock and distributions, Shares
Number of Reportable Segments
Number of reportable segments
Contract with customer liability deferral of revenue.
Contract With Customer Liability Deferral Of Revenue
Deferral of revenue
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Credit Facility
Long-Term Debt, Gross
Total long-term debt
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property and equipment
Property, Plant and Equipment, Gross, Total
Debt, Weighted Average Interest Rate
Weighted average interest rate
Intersegment Eliminations [Member]
Eliminations
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
(Loss) income before income taxes
Income (loss) before income taxes
Income (loss) before income taxes
Finance Lease, Liability, to be Paid, Year Five
2030
Kohlberg Kravis Roberts Capital Markets LLC.
Kohlberg Kravis Roberts Capital Markets L L C [Member]
Affiliate of KKR
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax
Net derivative gains (losses) and other costs arising during the period, net of tax expense (benefit) of $1.5; $(1.4); $1.5 and $1.9, respectively (1)
Business.
Business [Table]
Business [Table]
Inventory, Net
Inventories
Inventories
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash and cash equivalents, end of period
Cash and cash equivalents, beginning of period
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest
Measurement Basis [Axis]
Carrying Value
Statistical Measurement [Domain]
Statistical Measurement
Assets, Current
Total current assets
Document Period End Date
Document Period End Date
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
ICFR Auditor Attestation Flag
Promissory note.
Promissory Note [Member]
Promissory Note
Gain (Loss) on Disposition of Property Plant Equipment
Gain (Loss) on Disposition of Property Plant Equipment, Total
Gain on disposal of property and equipment
Number of outstanding fuel contracts.
Number Of Outstanding Fuel Contracts
Number of outstanding fuel contracts
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList
Long-Term Debt [Text Block]
Long-Term Debt
Accrued Salaries, Current
Payroll related accruals
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Weighted average amortization period for intangible assets
Statement of Financial Position [Abstract]
Classification on balance sheets:
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (RSU) [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect, Period of Adoption, Adjustment
Revenue [Policy Text Block]
Revenue Recognition
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal
Pre-tax gain (loss) on sale of business
Gain on divestiture
Gain on divestiture
Class of Stock [Axis]
Cash paid for amounts included in the measurement of lease liabilities.
Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract]
Cash paid for amounts included in the measurement of lease liabilities:
Unrelated Maintenance Services Companies.
Unrelated Maintenance Services Companies [Member]
Unrelated Maintenance Services Companies
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Finance Lease Liability, Payment Due [Abstract]
Monitoring agreement.
Monitoring Agreement [Member]
Monitoring Agreement
Liabilities
Total liabilities
Dividends
Dividend issued to common stockholders
Dividends, Total
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, Tax
Net derivative gains (losses) and other costs arising during the period, net of tax expense (benefit)
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Gain Loss [Line Items]
Restricted Stock [Member]
Restricted Stock Awards
Finance Lease, Right-of-Use Asset, Amortization
Amortization of right-of-use asset
Variable Rate [Axis]
Variable Rate
Finite-Lived Intangible Assets, Gross
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross, Total
Weighted Average Number of Shares Outstanding, Diluted
Weighted average number of common shares outstanding – diluted
Weighted average number of common shares outstanding - diluted
Number of sale of fully owned subsidiaries.
Number Of Sale Of Fully Owned Subsidiaries
Number of sale of fully owned subsidiaries
Repurchase of common stock and distributions.
Repurchase Of Common Stock And Distributions
Repurchase of common stock and distributions
Development services segment.
Development Services Segment [Member]
Development Services
Development Services segment.
Direct Operating Costs
Direct costs
Direct Operating Costs, Total
Securities Act File Number
Entity File Number
Office equipment and software.
Office Equipment And Software [Member]
Office Equipment and Software
Cover [Abstract]
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges
Cumulative Effect, Period of Adoption [Axis]
Cumulative Effect, Period of Adoption
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited
PSUs Forfeited
Investments [Domain]
Investments
Scenario [Domain]
Scenario
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Number of shares of common stock that may be issued
Number of Operating Segments
Number of operating segments
Sale of Stock [Domain]
Sale of Stock
Segment Reporting Disclosure [Text Block]
Segments
The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.
Derivative Instruments, Gain (Loss) Reclassified from AOCI into Income, Effective Portion
Net income (loss) reclassified from Accumulated other comprehensive (loss) into Interest expense
Preferred Stock, Convertible, Conversion Price
Initial conversion price of common stock
Revenue from Contract with Customer, Including Assessed Tax
Net service revenues
Net Service Revenues
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block]
Summary of Company's Performance Stock Unit Activity
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period
Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Total
Number of stock options forfeited
Subsequent Event [Table]
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period
Share issued to holders of units
Common stock shares issued
Bright view member.
Bright View Holdings Inc [Member]
Bright View Holdings
Business Combination, Series of Individually Immaterial Business Combinations [Member]
Business Acquisitions
Debt extinguishment
Gain (Loss) on Extinguishment of Debt
Loss on debt extinguishment
Gain (Loss) on Extinguishment of Debt, Total
Loss on debt extinguishment
Debt extinguishment
Document Financial Statement Restatement Recovery Analysis [Flag]
Document Financial Statement Error Correction [Flag]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Expected to vest after March 31, 2026
Nature of Operation, Product Information, Concentration of Risk [Table]
Schedule Of Product Information [Table]
Property, Plant and Equipment, Useful Life
Property and equipment, Useful Life
Net Deferred Gain Losses Net Of Taxes Expected To Be Recognized In Interest Expense
Net Deferred Gain Losses Net Of Taxes Expected To Be Recognized In Interest Expense
Net deferred gain on interest rate swap net of taxes expected to be recognized over the next 12 months
Amended Credit Agreement.
Amended Credit Agreement [Member]
Amended Credit Agreement
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]
Contract with Customer, Liability, Current
Deferred revenue
Balance, September 30, 2025
Balance, March 31, 2026
Schedule of leased assets.
Schedule Of Leased Assets [Table]
Schedule Of Leased Assets [Table]
Ownership [Axis]
Ownership
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Vesting period
Self Insurance Reserve, Noncurrent
Self-insurance reserves
Reserve for unpaid and incurred but not reported claims, classified in non-current liabilities
Debt Instrument, Redemption, Description
Redemption
Disposal Group, Including Discontinued Operation, Consideration
Consideration amount on sale of business
Depreciation
Depreciation, Total
Depreciation
Depreciation expense
Reported Value Measurement [Member]
Carrying Value
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding, Beginning Balance
Common stock, outstanding
Operating Lease, Liability, Current
Current portion of operating lease liabilities
Current portion of lease liabilities
Less: Current portion of lease liabilities
Revenue, Remaining Performance Obligation, Amount
Revenue, remaining performance obligations, amount
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Document Transition Report
Receivable [Domain]
Receivable
Convertible Preferred Stock [Member]
Series A Convertible Preferred Stock
Payments for Repurchase of Common Stock
Repurchase of common stock and distributions
Noncompete Agreements [Member]
Noncompete Agreements
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) and Effective Income Tax Rate
Statement of Cash Flows [Abstract]
Increase (Decrease) in Book Overdrafts
Increase (decrease) in book overdrafts
Stock Issued During Period, Value, New Issues
Capital contributions and issuance of common stock
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Summary of Stock Options Activity
Preferred Stock, Liquidation Preference, Value
Preferred stock, liquidation preference
Temporary equity stock issued during period shares new issues.
Temporary Equity Stock Issued During Period Shares New Issues
Issuance of Series A preferred stock, net of issuance costs, Shares
Payments to Acquire Businesses, Net of Cash Acquired
Payments to Acquire Businesses, Net of Cash Acquired, Total
Consideration paid, net of cash acquired
Business acquisitions, net of cash acquired
Interest Rate Swap [Member]
Interest Rate Swaps
Equity [Text Block]
Mezzanine Equity
Restricted Stock or Unit Expense
Non-cash equity-based compensation expense over the requisite service period
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets [Line Items]
Earnings Per Share [Text Block]
Earnings (Loss) Per Share of Common Stock
Voluntary repayments of long-term debt.
Voluntary Repayments Of Long Term Debt [Member]
Voluntary Repayments
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Schedule of Restricted Stock Award Activity
Cybersecurity Risk Management Processes Integrated [Text Block]
Net income
Net income (loss)
Net income (loss)
Business transformation and integration costs.
Business Transformation And Integration Costs
Business transformation and integration costs
Business transformation and integration costs
Gain On Divestiture
Gain On Divestiture
Gain on divestiture
Accounting Changes and Error Corrections [Abstract]
Dividends, Preferred Stock, Cash
Cash dividend
Operating Lease, Cost
Operating lease cost
Proceeds from (Payment for) Other Financing Activity
Other financing activities
Intangible Assets, Net (Excluding Goodwill)
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill), Total
Percentage of prepayment premium for voluntary prepayments.
Percentage Of Prepayment Premium for Voluntary Prepayments
Percentage of prepayment premium
Landscape maintenance.
Landscape Maintenance [Member]
Landscape Maintenance
Operating Lease, Payments
Operating cash flows from operating leases
Proceeds from Divestiture of Businesses
Proceeds from divestiture
Cash consideration
Assets
Assets [Abstract]
Construction in Progress [Member]
Construction in Progress
Repayments of Debt
Repayments of debt
Debt repayments
Repayments of term loan
Amortization of Debt Issuance Costs and Discounts
Amortization of financing costs and original issue discount
Amortization of Debt Issuance Costs and Discounts, Total
Document Fiscal Year Focus
Document Fiscal Year Focus
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Remaining performance obligations, expected satisfaction period
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Cash flows from investing activities:
Accounts Payable, Current
Accounts payable
Accounts Payable, Current, Total
Long Term Debt Maturities Repayments Of Principal After Year Four
Long term debt maturities repayments of principal after year four.
2031 and thereafter
Share based compensation arrangement by share based payment award options non vested and expected to vest outstanding number.
Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested And Expected To Vest Outstanding Number
Expected to vest after March 31, 2026
Accounting Standards Update and Change in Accounting Principle [Abstract]
Accounts receivable percent not collected until completion.
Accounts Receivable Percent Not Collected Until Completion
Percentage of not collected receivable until completion to total contract value
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Schedule of Contract Balances
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Reclassification Adjustment from AOCI for Derecognition, Tax
Reclassification of (gains) losses into net income (loss), net of tax (expense) benefit
Reclassification of (gains) into net income, net of tax (expense)
Fair Value Measurement, Policy [Policy Text Block]
Fair value of Financial Instruments
Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]
Schedule of Restricted Stock Unit Activity
Fair Value Disclosures [Abstract]
Supplemental cash flow information.
Supplemental Cash Flow Information Table [Text Block]
Summary of Supplemental Cash Flow Information
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Third amended and restated certificate of incorporation.
Third Amended And Restated Certificate Of Incorporation [Member]
Third Amended and Restated Certificate of Incorporation
Net Income (Loss) Available to Common Stockholders, Basic
Net loss available to common shareholders
Long-Term Line of Credit
Line of credit facility, amount outstanding balance
Long-term Line of Credit, Total
Payment for Contingent Consideration Liability, Financing Activities
Contingent business acquisition payments
Contingent business acquisition payments
Derivative Instrument [Axis]
Derivative Instrument
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Thereafter
Share-Based Payment Arrangement [Abstract]
Share based compensation arrangements by share based payment award options vested in period weighted average exercise price.
Share Based Compensation Arrangements by Share Based Payment Award Options Vested in Period Weighted Average Exercise Price
Vested, weighted average exercise price
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Unrecognized compensation cost
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Temporary Equity, Stock Issued During Period, Value, New Issues
Issuance of Series A preferred stock, net of issuance costs
Sale of Stock [Axis]
Sale of Stock
Derivatives, Policy [Policy Text Block]
Derivative Instruments and Hedging Activities
Gain on sale of fully owned subsidiaries.
Gain on Sale of Fully Owned Subsidiaries
Gain on sale of fully owned subsidiaries
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash (used) by investing activities
Finance Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term (years)
Title of 12(b) Security
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Schedule Of Segment Reporting Information By Segment [Table]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Forfeited, weighted average exercise price
Forfeited, weighted average exercise price
Income Tax Disclosure [Text Block]
Income Taxes
Interest Expense [Member]
Interest Expense
Other Liabilities, Noncurrent
Other liabilities
Other Liabilities, Noncurrent, Total
Consolidated Entities [Axis]
Consolidated Entities
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Right-of-use asset
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
Legal Entity [Axis]
Legal Entity
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Change in operating assets and liabilities:
Property, Plant and Equipment [Table Text Block]
Schedule of Property and Equipment, Net
Letters of Credit Outstanding, Amount
Interest period term
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding at September 30, 2025
Weighted Average Exercise Price, Outstanding at March 31, 2026
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Additional Paid-in Capital [Member]
Additional Paid-In Capital
Tenth Credit Agreement Amendment [Member]
Tenth credit agreement amendment.
Tenth Credit Agreement Amendment
Measurement Frequency [Domain]
Measurement Frequency
Statement of Income Location, Balance [Axis]
Income Statement Location
Finance lease costs.
Finance Lease Costs [Abstract]
Finance lease cost:
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trading Symbol
Trading Symbol
Maintenance services segment.
Maintenance Services Segment [Member]
Maintenance Services
Maintenance Services segment
Intangible Asset, Finite-Lived [Table]
Schedule Of Finite Lived Intangible Assets [Table]
Property, Plant and Equipment Disclosure [Text Block]
Property and Equipment, net
Gain (Loss) on Cash Flow Hedge Ineffectiveness.
Gain (Loss) on Cash Flow Hedge Ineffectiveness
Realized gain on hedges
Extinguishment of Debt [Axis]
Extinguishment of Debt
Subsequent Event Type [Axis]
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Schedule of Intangible Assets
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities:
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Commitment fee for unused balance of facility
Fair Value, Recurring [Member]
Recurring
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: Amounts representing interest
Less: Amounts representing interest
Equity Components [Axis]
Equity Components
Stock Issued During Period, Value, Stock Dividend
Dividends on Series A convertible preferred shares
Series A Preferred Stock dividends
Series A Preferred Stock dividends
Line of Credit, Current
Weighted average interest rate
Contract with customer billed revenue.
Contract With Customer Billed Revenue
Contract with customer billed revenue
Equity Component [Domain]
Equity Component
Financing Receivable [Member]
Receivables Financing Agreement
Goodwill and Intangible Assets Disclosure [Abstract]
Document Annual Report
Document Annual Report
Buildings and leasehold improvements.
Building And Leasehold Improvements [Member]
Buildings and Leasehold Improvements
Underwriting discounts and estimated offering expenses.
Underwriting Discounts And Estimated Offering Expenses
Underwriting discounts and estimated offering expenses
Business Combination [Axis]
IPO [Member]
IPO
Lessee operating and finance leases remaining lease term.
Lessee Operating And Finance Leases Remaining Lease Term
Remaining lease terms
Fuel contracts.
Fuel Contracts [Member]
Fuel Contracts [Member]
Subsidiaries [Member]
Wholly-owned Subsidiary
Proceeds from divestiture of businesses including transactions fees paid.
Proceeds From Divestiture Of Businesses Including Transactions Fees Paid
Cash consideration received from divestiture
Statement of Comprehensive Income [Abstract]
Adjusted EBITDA.
Adjusted E B I T D A
Segment Adjusted EBITDA
Segment Adjusted EBITDA
Maximum [Member]
Maximum
Lessee operating and finance lease renewal option term.
Lessee Operating And Finance Lease Renewal Option Term
Lease renewal option term
Deferred compensation arrangement percentage of participants compensation deferred.
Deferred Compensation Arrangement Percentage Of Participants Compensation Deferred
Percentage of participants compensation deferred
Designated as Hedging Instrument [Member]
Designated
Statistical Measurement [Axis]
Statistical Measurement
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Exercised, Weighted Average Exercise Price
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization
Common Stock, Value, Issued
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common stock, $0.01 par value; 500,000,000 shares authorized; 111,300,000 and 110,000,000 shares issued and 93,500,000 and 94,800,000 shares outstanding as of March 31, 2026 and September 30, 2025, respectively
Stockholders' Equity, Number of Shares, Par Value and Other Disclosure [Abstract]
Mezzanine equity:
Net Income (Loss) Available to Common Stockholders, Diluted
Net income (loss)available to common shareholders - diluted
Net loss available to common shareholders - diluted
Finance Lease, Principal Payments
Financing cash flows from finance leases
Repayments of finance lease obligations
Financing cash flows from finance leases
Operating Equipment
Equipment [Member]
Preferred Stock Dividends, Income Statement Impact
Less: Dividends on Series A convertible preferred shares
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Impairment of Long-lived Assets
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]
Right-of-use asset and lease liability classified as deferred rent obligations and exit/disposal liabilities, and prepaid rent.
Right Of Use Asset And Lease Liability Classified As Deferred Rent Obligations And Exit Or Disposal Liabilities And Prepaid Rent
Right-of-use asset and lease liability classified as deferred rent obligations and exit/disposal liabilities, and prepaid rent
Commitments and contingencies table.
Commitments And Contingencies [Table]
Commitments And Contingencies [Table]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Schedule of Future Amortization Expense
Entity Public Float
Entity Public Float
Contractual repayments of long-term debt.
Contractual Repayments Of Long Term Debt [Member]
Contractual Repayments
Preferred Stock, Shares Authorized
Preferred stock, authorized
Preferred Stock, Shares Authorized
First lien revolving credit facility.
First Lien Revolving Credit Facility [Member]
First Lien Revolving Credit Facility
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class
Operating and finance lease right of use asset.
Operating And Finance Lease Right Of Use Asset
Right-of-use asset
Revenue from Contract with Customer [Text Block]
Revenue
Entity Registrant Name
Entity Registrant Name
Entity Voluntary Filers
Entity Voluntary Filers
Lessee Disclosure [Abstract]
Other Nonoperating Income (Expense)
Other expense (income)
Other Nonoperating Income (Expense), Total
Other expense
Subsequent Events [Abstract]
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Fuel swap contracts.
Fuel Swap Contracts [Member]
Fuel Swap Contracts
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
SOFR
Consolidated Entities [Domain]
Consolidated Entities
Income Tax Expense (Benefit)
Total income tax (benefit) expense
Income tax expense
Income tax benefit
Income tax expense (benefit)
Measurement Frequency [Axis]
Measurement Frequency
Cost of services provided.
Cost Of Services Provided [Member]
Cost of Services Provided
Proceeds from Issuance of Common Stock
Proceeds from issuance of common stock, net of share issuance costs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Subsidiary, Ownership Percentage, Noncontrolling Owner
Ownership interest in percentage
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive (loss)
Consolidation Items [Axis]
Consolidation Items
Payments to Acquire Property, Plant, and Equipment
Capital Expenditures
Payments to Acquire Property, Plant, and Equipment, Total
Purchase of property and equipment
Payment for (Proceeds from) Other Investing Activity
Other investing activities
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted
Performance stock units issued
Assets
Total assets
Terminated notional amount.
Terminated Notional Amount
Terminated notional amount
Inventory, Policy [Policy Text Block]
Inventories
Property, Plant and Equipment [Table]
Schedule Of Property Plant And Equipment [Table]
Income Statement [Abstract]
Finance Lease, Interest Payment on Liability
Operating cash flows from finance leases
Operating cash flows from finance leases
Share-Based Payment Arrangement [Policy Text Block]
Equity-based Compensation
Accounts and Nontrade Receivable [Text Block]
Accounts Receivable, net
Deferred Income Tax Expense (Benefit)
Deferred taxes
Deferred Income Tax Expense (Benefit), Total
Selling, General and Administrative Expenses [Member]
Selling, General and Administrative Expense
Line of Credit Facility, Initiation Date
Credit agreement date
Stock Issued During Period, Shares, New Issues
Capital contributions and issuance of common stock, Shares
Common stock, shares issued
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested
Performance stock unit awards vested
Earnings Per Share, Diluted
Diluted earnings (loss) per share
Earnings Per Share, Diluted, Total
Diluted loss per share
Diluted (loss) per share
Self Insurance Reserve, Current
Current portion of self-insurance reserves
Reserve for unpaid and incurred but not reported claims, classified in current liabilities
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Summary of Certain Financial Data For Each of Segments and Reconciliation of Segment Adjusted EBITDA to (Loss) Before Income Taxes
Operating Segments [Member]
Operating Segments
City Area Code
City Area Code
Operating leases.
Operating Leases [Abstract]
Operating leases:
Auditor Name
Auditor Name
Finance Lease, Liability, Noncurrent
Lease liabilities
Non-current lease liabilities
Non-current lease liabilities
Proceeds from Lines of Credit
Proceeds from revolving credit facility
Proceeds from Lines of Credit, Total
Debt Instrument, Face Amount
Aggregate principal amount
Line of Credit Facility, Maximum Borrowing Capacity
Credit agreement, maximum borrowing capacity
Dividends, preferred stock, cash paid.
Dividends, Preferred Stock, Cash Paid
Cash dividends paid
Credit agreement.
Credit Agreement [Member]
Credit Agreement
Variable Lease, Cost
Variable lease costs not included in lease liability
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term (years)
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Stockholders' Equity Note, Stock Split, Conversion Ratio
Reverse stock split ratio
Lease, Cost
Total lease cost
Preferred Stock Dividends and Other Adjustments
Less: dividends on Series A convertible preferred shares
Preferred Stock Dividends and Other Adjustments, Total
Less: dividends on Series A convertible preferred shares
Less: Dividends on Series A convertible preferred shares
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Total liabilities
Derivative Liability, Fair Value, Gross Liability, Total
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Leases of lessee operating leases and finance leases.
Leases Of Lessee Operating Leases And Finance Leases Disclosure [Text Block]
Leases
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net, Ending Balance
Property, Plant and Equipment, Net, Beginning Balance
Property and equipment, net
Property and equipment, net
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Right-of-use Assets Obtained In Exchange For New Finance Liabilities
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number
Stock option vested and exercisable upon issuance
Vested and exercisable at March 31, 2026
Operating Income (Loss)
Income from operations
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions
Ownership interest in percentage
Retained Earnings [Member]
Accumulated Deficit
Entity Address, Country
Entity Address, Country
Share-Based Payment Arrangement, Noncash Expense
Equity-based compensation
Share-based Payment Arrangement, Noncash Expense, Total
Payments of Stock Issuance Costs
Payments of stock issuance costs
Operating Lease, Weighted Average Discount Rate, Percent
Weighted-average incremental borrowing rate
Operating Lease, Liability, Noncurrent
Non-current lease liabilities
Non-current lease liabilities
Long-term operating lease liabilities
Lease liabilities
Fair Value, Inputs, Level 1 [Member]
Level 1
Class of Stock [Line Items]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash (used) by financing activities
Lease, Cost [Table Text Block]
Summary of Components of Lease Cost for Operating and Finance Leases
Auditor Location
Auditor Location
Deferred Income Tax Liabilities, Net
Deferred tax liabilities
Deferred Income Tax Liabilities, Net, Total
Deferred tax liabilities
Extinguishment of Debt, Type [Domain]
Extinguishment of Debt, Type
Derivative Contract [Domain]
Derivative Contract
Debt issuance and prepayment costs.
Debt issuance and Prepayment Costs
Debt issuance and prepayment costs
Entity Interactive Data Current
Entity Interactive Data Current
Statement of Income Location, Balance [Domain]
Income Statement Location
Fair Value Measurement [Domain]
Fair Value Measurement
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities:
Convertible Preferred Stock, Shares Issued upon Conversion
Conversion rate
Repayments of Lines of Credit
Repayments of revolving credit facility
Accounting Standards Update and Change in Accounting Principle [Text Block]
Recent Accounting Pronouncements
Common stock, affiliates holding percentage.
Common Stock, Affiliates Holding Percentage
Common stock, affiliates holding percentage
Unbilled Receivables, Current
Unbilled revenue
Second lien credit facility term loan due 2021.
Second Lien Credit Facility Term Loan Due Twenty Twenty One [Member]
Second Lien Credit Facility Term Loan Due 2021
Snow removal.
Snow Removal [Member]
Snow Removal
Cumulative Effect, Period of Adoption [Domain]
Cumulative Effect, Period of Adoption
Net deferred gain on fuel rate swap net of taxes expected to be recognized over the next 12 months
Net deferred gain losses net of taxes expected to be recognized in cost of services
Net deferred gain losses net of taxes expected to be recognized in cost of services.
Entity Tax Identification Number
Entity Tax Identification Number
Land [Member]
Land
Long-Term Debt, Type [Axis]
Long-term Debt, Type
Debt Instrument, Term
Debt instrument, term
Two thousand and twenty three employment inducement incentive award plan.
Two Thousand And Twenty Three Employment Inducement Incentive Award Plan [Member]
2023 Employment Inducement Incentive Award Plan
Local Phone Number
Local Phone Number
Short-term lease cost
Short-Term Lease, Cost
Finance Lease, Liability, to be Paid, Year Two
2027
Trademarks [Member]
Trademarks
Revenue, Remaining Performance Obligation, Percentage
Remaining performance obligations, percentage
Dividends, Preferred Stock, Paid-in-kind
Dividends paid in-kind
Accounting Policies [Abstract]
Disaggregation of Revenue [Line Items]
Disaggregation Of Revenue [Line Items]
Lessee, Operating Lease, Liability, to be Paid, Year Four
2029
Class of Stock [Domain]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Common stock shares available for sale
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Unamortized value of outstanding stock-based compensation, weighted average remaining life
Stock, Class of Stock [Table]
Entity Emerging Growth Company
Entity Emerging Growth Company