Document And Entity Information
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 3 - Cash, Cash Equivalents, and Restricted Cash
Income tax benefit
us-gaap_IncomeTaxExpenseBenefit
Income tax benefit
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 4 - Accounts Receivable
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 5 - Property and Equipment
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
Trading Arrangements, by Individual [Table]
Note 6 - Intangible Assets
Material Terms of Trading Arrangement [Text Block]
Note 7 - Investments, Including Investments Accounted for Using the Equity Method
Note 8 - Fair Value
Financial Instrument [Axis]
Note 9 - Asset Retirement Obligations
Note 12 - Leases
Note 13 - Industry Segments
Minimum [Member]
Note 14 - Discontinued Operations
Investments in unconsolidated affiliates
Beginning of period
End of period
Note 3 - Cash, Cash Equivalents, and Restricted Cash - Schedule of Restricted Cash and Cash Equivalents (Details)
Statistical Measurement [Domain]
Note 4 - Accounts Receivable - Schedule of Receivables (Details)
Maximum [Member]
Note 5 - Property and Equipment - Schedule of Property, Plant and Equipment (Details)
Share Repurchase Program [Axis]
Note 6 - Intangible Assets - Schedule of Intangible Assets (Details)
Share Repurchase Program [Domain]
Provision for losses and LAE claims arising in prior year
Equity in (loss) income of unconsolidated affiliates
Equity in loss (income) of unconsolidated affiliates
Note 6 - Intangible Assets - Schedule of Future Amortization, Intangible Assets (Details)
Note 7 - Investments, Including Investments Accounted for Using the Equity Method - Schedule of Investments (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 7 - Investments, Including Investments Accounted for Using the Equity Method - Marketable Equity Securities and Trading Securities (Details)
boc_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToParent
Net (Loss) Income from Discontinued Operations
Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
Note 7 - Investments, Including Investments Accounted for Using the Equity Method - Available for Sale Securities (Details)
Accounts payable and accrued expenses
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Note 7 - Investments, Including Investments Accounted for Using the Equity Method (As Restated) - Reconciliation of the Company's Investments in Equity Affiliates (Details)
Provision for losses and LAE claims arising in current year
Note 7 - Investments, Including Investments Accounted for Using the Equity Method - Summarized Financial Data (Details)
Note 8 - Fair Value - Fair Values for Investments (Details)
Net cash used in operating activities from discontinued operations
Amount of cash inflow (outflow) from operating activity attributable to discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity.
Note 9 - Asset Retirement Obligations - Asset Retirement Obligations (Details)
us-gaap_EquityMethodInvestmentSoldCarryingAmount
Sale of interest
Note 12 - Leases - Operating Lease Cost (Details)
Note 12 - Leases - Supplemental Cash Flow Information Related to Operating Leases (Details)
Note 12 - Leases - Operating Lease Assets and Liabilities (Details)
Note 12 - Leases - Maturity of Operating Lease Liabilities (Details)
Note 13 - Industry Segments - Schedule of Segment Reporting Information, by Segment (Details)
Note 14 - Discontinued Operations - Schedule of Discontinued Operations (Details)
Note 14 - Discontinued Operations - Reserves Balance for Losses and Loss Adjustment Expenses (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Counterparty Name [Axis]
boc_CreditAgreementMaximumDividendAmount
Credit Agreement, Maximum Dividend Amount
The maximum dividend amount available under credit agreement.
Employee costs
Land [Member]
us-gaap_CompensationExpenseExcludingCostOfGoodAndServiceSold
Compensation Expense, Excluding Cost of Good and Service Sold
Financial Instruments [Domain]
Other Income (Expense):
Weighted Average [Member]
Counterparty Name [Domain]
Link Credit Facility [Member]
Represents the Link Credit Facility.
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
boc_SharesOfCommonStockRegisteredByCertainSellingShareholders
Shares of Common Stock Registered by Certain Selling Shareholders (in shares)
The number of shares of common stock registered by certain selling shareholders.
Boston Omaha Broadband Credit Facility [Member]
Represents the Boston Omaha Broadband Credit Facility.
Segment Reporting [Text Block]
Losses and LAE payments for claims arising in current year
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain]
Segment Reporting [Table Text Block]
Adjustments to reconcile net loss to cash provided by operating activities:
Liabilities held for sale
Preferred stock, $.001 par value, 1,000,000 shares authorized, 0 shares issued and outstanding
us-gaap_Liabilities
Liabilities
Total Liabilities
Losses and LAE payments for claims arising in prior years
us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
Total net losses and loss adjustment expenses incurred
us-gaap_ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
Gross reserves for unpaid losses and loss adjustment expenses, beginning of period
us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets
Intangible assets, net
Consolidation Items [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total Liabilities and Stockholders' Equity
Cash and Cash Equivalent [Table]
Segment adjusted EBITDA
Earnings before interest, taxes, depreciation, and amortization.
us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
Property and equipment, net
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepaid expenses
us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1
Goodwill
us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation
Total liabilities held for sale
Subsequent Event [Member]
Consolidation Items [Domain]
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Nonconsolidated Investee [Domain]
us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
Lessee, Lease, Description [Table]
Term Loan 1 [Member]
Related to a term loan.
First National Bank of Omaha [Member]
Related to the First National Bank of Omaha.
Changes in operating assets and liabilities:
Preferred stock, shares issued (in shares)
Intangible assets, weighted average useful life (Month)
Preferred stock, shares outstanding (in shares)
Preferred stock, shares authorized (in shares)
Portion at Fair Value Measurement [Member]
Cash held by BOAM funds and other
us-gaap_RestrictedCash
Reported Value Measurement [Member]
boc_InvestmentOwnedSharesSold
Investment Owned, Shares Sold (in shares)
The number of shares sold of investment.
Fair Value, by Balance Sheet Grouping [Table]
Distributions received
Preferred stock, par value (in dollars per share)
Cash held by BOAM funds and other
Estimate of Fair Value Measurement [Member]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Total Cash, Cash Equivalents, and Restricted Cash as Presented in the Condensed Consolidated Statements of Cash Flows
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period
Cash, Cash Equivalents, and Restricted Cash, End of Period
Statement [Table]
Operating Activities [Axis]
Continuing Operations [Member]
us-gaap_LinesOfCreditCurrent
Line of Credit, Current
Discontinued Operations [Member]
Operating Activities [Domain]
Credit Facility [Axis]
Cash payments for operating leases
Credit Facility [Domain]
Revolving Credit Facility [Member]
Insurance [Member]
Represents insurance.
Boulderado [Member]
Information pertaining to Boulderado Partners, LLC ("Boulderado").
us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense
Gross reserves for unpaid losses and loss adjustment expenses, end of period
us-gaap_EquityMethodInvestments
Equity Method Investments
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
New operating lease assets obtained in exchange for operating lease liabilities
Common Stock Warrants of Sky Harbour Group Corporation [Member]
Reprints Common stock warrants of Sky Harbour Group Corporation.
Boulderado and Magnolia [Member]
Information pertaining to Boulderado and Magnolia.
Trademarks and Trade Names [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Contributions from noncontrolling interest
Marketable equity securities
Marketable equity securities
Line of Credit Facility, Lender [Domain]
Carrying amount
us-gaap_EquityMethodInvestmentOwnershipPercentage
Equity Method Investment, Ownership Percentage
boc_MinimumConsolidatedLeverageRatioRequirement
Minimum Consolidated Leverage Ratio Requirement
The minimum consolidated leverage ratio requirement.
Term Loan 2 [Member]
Related to a term loan.
us-gaap_EquityMethodInvestmentQuotedMarketValue
Equity Method Investment, Quoted Market Value
Lender Name [Axis]
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
boc_ConsolidatedFixedChargeRatioRequirement
Consolidated Fixed Charge Ratio Requirement
The consolidated fixed charge ratio requirement.
Long-Term Debt, Type [Axis]
Marketable equity securities, Cost
us-gaap_EquitySecuritiesFvNiCost
Product and Service [Domain]
Product and Service [Axis]
us-gaap_LineOfCredit
Long-Term Line of Credit
Ownership [Axis]
boc_InvestmentTransferOfInterest
Transfer of interest
Represents the transfer of interest related to equity investment.
Ownership [Domain]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
Long-Term Debt, Maturity, Remainder of Fiscal Year
CB&T Holding Corporation [Member]
Refers to information regarding CB&T Holding Corporation.
Thereafter
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
boc_OfferingOfDebtSecuritiesAndWarrantsMaximum
Offering of Debt Securities and Warrants, Maximum (in shares)
Represents the maximum number of debt securities and warrants.
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Operating Lease, Weighted Average Discount Rate, Percent
Voting Common Stock of Privately Held Company CB&T Holding Corporation [Member]
Refers to information regarding voting common stock of CB&T Holding Corporation.
2027
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2031
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
2029
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2028
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
Statement [Line Items]
Private Placement [Member]
Fair Value Hierarchy and NAV [Axis]
2030
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
Common stock, shares issued (in shares)
boc_EquityMethodInvestmentSharesConvertedFromOtherEquity
Equity Method Investment, Shares, Converted from Other Equity (in shares)
The number of shares of equity method investment converted from other equity during period.
Common stock, shares authorized (in shares)
boc_MaximumSharesOfCommonStockRegisteredByCertainSellingShareholders
Maximum Shares of Common Stock Registered by Certain Selling Shareholders (in shares)
The maximum shares of common stock registered by certain selling shareholders.
Common Class B [Member]
Sky Harbour Group Corporation [Member]
Represents Sky Harbour Group Corporation.
boc_EquityMethodInvestmentPricePerShare
Equity Method Investment, Price Per Share (in dollars per share)
The price per share of equity investment method equity interest.
Intangible Asset and Goodwill [Table Text Block]
Common stock
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Proceeds from the issuance of stock
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearThree
2029
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFour
2030
Accounts payable and accrued expenses
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths
2027
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearTwo
2028
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Disposal Group Classification [Axis]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFive
2031
Disposal Group Classification [Domain]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingAfterYearFive
Thereafter
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
us-gaap_ShortTermInvestments
Short-term Investments
Concentration Risk [Table]
us-gaap_CededPremiumsEarned
Ceded Premiums Earned
Subsequent Events [Text Block]
Capital expenditures
us-gaap_SegmentExpenditureAdditionToLongLivedAssets
Proceeds from long term credit facility
boc_PaymentsOnShorttermPayablesForBusinessAcquisitions
Payments on short-term payables for business acquisitions
Cash outflow for short-term payables for a business acquisition.
Proceeds from sales of investments
Significant Accounting Policies [Text Block]
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less imputed interest
Amortization of right of use assets
Noncurrent lease liabilities
us-gaap_OperatingLeaseLiabilityNoncurrent
Lease liabilities
Present Value of Lease Liabilities
Total Lease Liabilities
Current lease liabilities
Lease liabilities
boc_ShareRepurchaseProgramAuthorizedperrcentageOfOutstandingShares
Share Repurchase Program, Authorized, Percentage of Outstanding Shares
Shares authorized to be repurchased as a percentage of the average daily volume of outstanding shares.
us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest
Noncontrolling interest in subsidiary (income) loss
Current maturities of long-term debt
Long-Term Debt, Current Maturities
BOB [Member]
Related to the entity BOB.
Capital distributions from discontinued operations
Share Repurchase Program [Member]
Pertains to the Share Repurchase Program.
Business Combination, Contingent Consideration, Type [Domain]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Long-Term Debt, Maturity, Year Two
Long-term debt, less current maturities
Business Combination, Contingent Consideration, Type [Axis]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Long-Term Debt, Maturity, Year Three
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Long-Term Debt, Maturity, Year One
Site Location [Member]
Related to the finite-lived intangible asset for site location.
Contributions from noncontrolling interests
us-gaap_LongTermInvestments
Long-term investments
Broadband Services [Member]
Information pertaining to broadband services.
us-gaap_LongTermDebt
Long-Term Debt
Loss Contingencies [Table]
Statement of Stockholders' Equity [Abstract]
Intangible Asset, Finite-Lived, Class [Axis]
us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Equity Securities, FV-NI
Intangible Asset, Finite-Lived, Class [Domain]
Class of Warrant or Right [Axis]
Class of Warrant or Right [Domain]
Losses and LAE payments for claims arising in total payments
Statement of Cash Flows [Abstract]
Warrants for Common Class A Stock [Member]
Related to the warrants to purchase Common Class A stock of the company.
Long-Term Debt, Type [Domain]
Stockholders' Equity:
Equity Components [Axis]
us-gaap_PaymentsOfStockIssuanceCosts
Offering costs
Minority Owners [Member]
Minority Owners
us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets
Other
Equity Component [Domain]
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
Fair Value, Inputs, Level 2 [Member]
Equity [Text Block]
Fair Value, Inputs, Level 1 [Member]
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Cost of Revenues
Short-term payables for business acquisitions
Represents the amount of short-term payable for acquisition as of the balance sheet date.
us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities
Deferred tax liability
us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput
Investment Company, Investment Owned, Measurement Input
Total Property and Equipment, net
Property and Equipment, net
Property, plant and equipment, gross
boc_AssetsNoncurrentExcludingPropertyPlantAndEquipmentNet
Total Other Assets
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer, excluding property, plant, and equipment, net.
Business Combination Agreement with SHG [Member]
Represents information regarding a business combination agreement with Sky Harbor LLC.
Subsequent Event Type [Domain]
Bad debt expense
Subsequent Event [Table]
Subsequent Event Type [Axis]
Build for Rent Subsidiary [Member]
Related to Build for Rent subsidiary.
Sale of Stock [Axis]
U.S. Treasury notes, Cost
boc_BusinessAcquisitionBackstopAgreedToBeProvidedToAcquireeMaximumValue
Business Acquisition, Backstop Agreed to Be Provided to Acquiree, Maximum Value
Represents the maximum value of the backstop agreed to be provided to the acquiree in a business combination.
boc_BusinessAcquisitionBackstopAgreedToBeProvidedToAcquireePricePerShare
Business Acquisition, Backstop Agreed to Be Provided to Acquiree, Price Per Share (in dollars per share)
Represents the price per share of the backstop agreed to be provided to the acquiree in a business combination.
Stock issued as compensation
us-gaap_GainContingencyUnrecordedAmount
Gain Contingency, Unrecorded Amount
Deferred tax liability
us-gaap_DeferredIncomeTaxLiabilitiesNet
Gain Contingency, Nature [Domain]
Gain Contingencies, Nature [Axis]
BOC Yellowstone LLC [Member]
Represents BOC Yellowstone LLC.
Yellowstone Acquisition Company [Member]
Represents Yellowstone Acquisition Company.
Fair Value Disclosures [Text Block]
Current Liabilities:
us-gaap_GainLossOnInvestments
Other investment loss
us-gaap_LiabilitiesCurrent
Total Current Liabilities
Total, cost
us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
Net Income (Loss) from Discontinued Operations before Other Income (Expense) and Income Taxes
Accretion
Accretion
Secured Overnight Financing Rate (SOFR) [Member]
Accounts receivable, net
Accounts receivable, net
us-gaap_LongTermDebtFairValue
Long-Term Debt, Fair Value
Cash Flows from Investing Activities from Continuing Operations:
Short-term investments
Lease, Cost [Table Text Block]
us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net Cash (Used in) Provided by Financing Activities from Continuing Operations
us-gaap_DisposalGroupIncludingDiscontinuedOperationInvestment
Investments
Cash Flows from Financing Activities from Continuing Operations:
us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Net Cash Provided by (Used in) Investing Activities from Continuing Operations
Yellowstone Acquisition Company Warrants [Member]
Represents the Yellowstone Acquisition Company warrants.
us-gaap_SeveranceCosts1
Severance Costs
us-gaap_PaymentsToAcquireEquityMethodInvestments
Payments to Acquire Equity Method Investments
Customer Relationships [Member]
Net cash (used in) provided by financing activities from discontinued operations
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
(Gain) loss on disposition of assets
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated depreciation
Net cash provided by (used in) investing activities from discontinued operations
us-gaap_PaymentsToAcquireInvestments
Payments to Acquire Investments, Total
The 2025 Share Repurchase Program [Member]
Relating to the 2025 share repurchase program.
Additional investments in unconsolidated affiliates
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Accumulated amortization
General and administrative
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Net Loss from Continuing Operations Before Income Taxes
us-gaap_CashUninsuredAmount
Cash, Uninsured Amount
Additional paid-in capital
Debt Disclosure [Text Block]
Noncontrolling interests
Discontinued Operations, Held-for-Sale [Member]
Prepaid expense and other current assets
Amortization
Amortization
Amortization
Stock issued for cash
Stock Issued During Period, Value, New Issues
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Capital expenditures
Lessee, Operating Leases [Text Block]
us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Distributions to noncontrolling interests
us-gaap_PaymentsToAcquireOtherInvestments
Purchases of investments
us-gaap_DebtInstrumentCarryingAmount
Long-Term Debt, Gross
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Current Assets:
us-gaap_AssetsCurrent
Total Current Assets
Stock issued as compensation (in shares)
LMH [Member]
Related to the entity LMH.
us-gaap_GrossProfit
Gross Margin
Gross profit
Stock issued for cash (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Structures and Displays [Member]
Related to the property structures and displays.
Vehicles and Equipment [Member]
Related to the property vehicles and equipment.
Debt Instrument, Name [Domain]
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Depreciation
Depreciation
Depreciation
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]
Class of Stock [Domain]
GIG [Member]
Related to the entity GIG.
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)
Compensation paid in stock
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
IPO [Member]
Cash Flows from Operating Activities from Continuing Operations:
Schedule of Long-Term Debt Instruments [Table]
us-gaap_NetCashProvidedByUsedInDiscontinuedOperations
Net (Decrease) Increase in Cash, Cash Equivalents, and Restricted Cash from Discontinued Operations
Debt Instrument [Axis]
us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Net Cash Provided by Operating Activities from Continuing Operations
Permits, Licenses and Lease Acquisition Costs [Member]
Related to the finite-lived intangible asset for permits, licenses and lease acquisition costs.
Nonsolicitation Agreement [Member]
Related to the finite-lived intangible asset for nonsoliciation agreements.
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
Adjustments to reconcile net (loss) income to cash provided by operating activities:
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]
boc_FundDistributions
Fund Distributions
The amount of funds that were distributed.
Impaired Assets to be Disposed of by Method Other than Sale, Asset Name [Domain]
boc_ClassOfWarrantOrRightExercisedDuringPeriod
Class of Warrant or Right, Exercised During Period (in shares)
The number of warrants or rights exercised during period.
Warrants for Common Class B Stock [Member]
Related to the warrants to purchase Common Class B stock of the company.
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)
Operating Segments [Member]
us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability
Deferred Compensation Arrangement with Individual, Recorded Liability
Accounting Policies [Abstract]
boc_EffectOfOtherOperatingActivities
Other
Represents the cash inflow (outflow) from other operating activities.
Segments [Domain]
Schedule of Receivables with Imputed Interest [Table Text Block]
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Allowance for credit losses
Other [Member]
Related to other offerings of stock.
Segments [Axis]
Diluted Net Loss per Share - Continuing Operations (in dollars per share)
us-gaap_StockRepurchasedDuringPeriodShares
Stock Repurchased During Period, Shares (in shares)
Basic Net Loss per Share - Continuing Operations (in dollars per share)
us-gaap_IncomeLossFromContinuingOperations
Net Income (Loss) from Continuing Operations Attributable to Common Stockholders
Measurement Input, Cap Rate [Member]
Fiber, Towers, and Broadband Equipment [Member]
Related to fiber, towers, and broadband equipment.
Billboard Rentals [Member]
The amount of revenue derived from billboard rentals.
Measurement Input Type [Axis]
Income Statement [Abstract]
us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Net Income (Loss) Before Income Taxes
U.S. Treasury notes, Fair Value
Diluted Net Income (Loss) per Share - Discontinued Operations (in dollars per share)
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Basic Net Income (Loss) per Share - Discontinued Operations (in dollars per share)
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net Income (Loss) from Discontinued Operations
Cash Flows from Discontinued Operations:
us-gaap_TreasuryStockCommonValue
Treasury stock, at cost, 1,389,177 and 561,868 shares, respectively
Treasury stock, shares (in shares)
us-gaap_FairValueAdjustmentOfWarrants
Fair Value Adjustment of Warrants
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Treasury Stock, Common [Member]
Depreciation, amortization, and accretion
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets as well as expenses for accretion.
boc_UnitsIssuedDuringPeriodNumberOfCommonStockShares
Units Issued During Period, Number of Common Stock, Shares (in shares)
The number of common stock shares in each unit issued during the period.
Net loss attributable to common stockholders, June 30, 2025
Net loss attributable to common stockholders, March 31, 2025
Net Loss Attributable to Common Stockholders
boc_UnitsIssuedDuringPeriodNumberOfWarrants
Units Issued During Period, Number of Warrants (in shares)
The number of warrants per units issued during the period.
boc_UnitsIssuedDuringPeriodPricePerUnit
Units Issued During Period, Price Per Unit (in dollars per share)
The price per unit of the units issued during the period.
boc_UnitsIssuedDuringPeriodNumber
Units Issued During Period, Number (in shares)
The number of units issued during the period
us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Offering costs
Costs and Expenses:
us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income tax benefit (provision)
Investment and other income
boc_PolicyTable
Common Class A [Member]
Measurement Input Type [Domain]
Class B Common Stock of Yellowstone Acquisition Company [Member]
Represents class B common stock of Yellowstone Acquisition Company.
boc_CommonStockVotingRightsPerShare
Common Stock, Voting Rights Per Share
The number of voting rights per share of common stock.
us-gaap_CostsAndExpenses
Total Costs and Expenses
Office Furniture and Equipment [Member]
Related to the office furniture and equipment portion of property, plant and equipment.
Accounting Standards Update and Change in Accounting Principle [Table]
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
General and administrative
us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherIncome
Other investment income
us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization
Depreciation and amortization
Asset Retirement Obligation Disclosure [Text Block]
us-gaap_AssetRetirementObligation
Balance
Balance
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Treasury stock purchased
Asset retirement obligations
Additions
Liabilities settled
Accretion expense
Measurement Basis [Axis]
us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent
Prepaid expense and other current assets
us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage
Fair Value Hierarchy and NAV [Domain]
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilities
Accounts payable and accrued expenses
Marketable equity securities, Gross Unrealized Gain (Loss)
The accumulated unrealized gain (loss) on equity securities.
us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Total assets held for sale
us-gaap_RepaymentsOfLongTermDebt
Principal payments of long-term debt
Statement of Financial Position [Abstract]
Non-redeemable Private Placement Warrants [Member]
Represents the non-redeemable private placement warrants.
us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredRevenue
Deferred revenue
Assets held for sale
boc_DisposalGroupIncludingDiscontinuedOperationConsiderationPercentageOfProceeds
Disposal Group, Including Discontinued Operation, Consideration, Percentage of Proceeds
Represents the percentage of consideration proceeds that will go to the company.
Other Assets:
Income Taxes Paid in Cash
Cash and cash equivalents held by Discontinued Operations
Cash and cash equivalents
Variable Interest Entity, Primary Beneficiary [Member]
Boston Omaha Broadband Promissory Note [Member]
Relating to Boston Omaha Broadband promissory note.
My Bundle TV Inc. [Member]
Relating to My Bundle TV Inc.
boc_LongtermDebtMaturityAfterYearThree
Long-Term Debt, Maturity, after Year Three
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Rural Utilities Service ReConnect Program [Member]
Relating to Rural Utilities Service ReConnect Program.
CopperPoint Insurance Company [Member]
Relating to CopperPoint Insurance Company.
Long-term Liabilities:
Funds held as collateral assets held by Discontinued Operations
Cash held by BOAM funds and other
Amount of restricted currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group.
Additional PIPE Offering [Member]
Relating to an additional PIPE Offering.
boc_DisposalGroupIncludingDiscontinuedOperationMarketableEquitySecurities
Marketable equity securities
Amount classified as marketable equity securities attributable to disposal group held for sale or disposed of.
boc_DisposalGroupIncludingDiscontinuedOperationOtherRestrictedAssets
Funds held as collateral assets
Amount classified as other restricted assets attributable to disposal group held for sale or disposed of.
Professional fees
Professional Fees
boc_EquityOfferingMaximumShares
Equity Offering, Maximum Shares (in shares)
the maximum shares to be issued in equity offering.
Private Placement Warrants [Member]
Information pertaining to Private Placement Warrants.
boc_DisposalGroupIncludingDiscontinuedOperationShorttermInvestments
Disposal Group, Including Discontinued Operation, Short-term Investments
Amount of short-term investment attributable to disposal group held for sale or disposed of.
boc_EquityOfferingMaximumAmount
Equity Offering, Maximum Amount
The maximum amount of equity offering.
Other
boc_DisposalGroupIncludingDiscontinuedOperationLiabilityForClaims
Unpaid losses and loss adjustment expenses
Amount classified as liabilities for claims attributable to disposal group held for sale or disposed of.
boc_DisposalGroupIncludingDiscontinuedOperationUnearnedPremiums
Unearned premiums
Amount classified as unearned premiums attributable to disposal group held for sale or disposed of.
us-gaap_IncreaseDecreaseInDeferredRevenue
Deferred revenue
boc_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities
Lease liabilities
Amount classified as lease liabilities attributable to disposal group held for sale or disposed of.
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
boc_DisposalGroupIncludingDiscontinuedOperationCollateralizedFinancings
Funds held as collateral
Amount classified as collateralized financings attributable to disposal group held for sale or disposed of.
Warrant [Member]
boc_DisposalGroupIncludingDiscontinuedOperationDeferredPolicyAcquisitionCosts
Deferred policy acquisition costs
Amount classified as deferred policy acquisition costs attributable to disposal group held for sale or disposed of.
boc_DisposalGroupIncludingDiscontinuedOperationRightOfUseAssets
Right of use assets
Amount classified as right of use assets attributable to disposal group held for sale or disposed of.
Document Type
us-gaap_LessorOperatingLeaseTermOfContract
Lessor, Operating Lease, Term of Contract (Month)
Document Information [Line Items]
Document Quarterly Report
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Operating Lease, Weighted Average Remaining Lease Term (Year)
Premiums Earned [Member]
Relating to premiums earned.
Document Information [Table]
Investment and Other [Member]
Relating to investment and other.
boc_DisposalGroupIncludingDiscontinuedOperationEmployeeCosts
Employee costs
Amount of employee costs attributable to disposal group, including, but not limited to, discontinued operation.
boc_DisposalGroupIncludingDiscontinuedOperationProfessionalFees
Professional fees
Amount of professional fees attributable to disposal group, including, but not limited to, discontinued operation.
Deferred revenue
Entity Interactive Data Current
us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)
Document Transition Report
Diluted Weighted Average Class A and Class B Common Shares Outstanding (in shares)
us-gaap_OperatingExpenses
Total Expenses
Basic Weighted Average Class A and Class B Common Shares Outstanding (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Year)
us-gaap_EarningsPerShareBasic
Basic Net Loss per Share (in dollars per share)
Custodial Risk Disclosure [Text Block]
A complete disclosure of custodial risk.
Indemnification Agreement [Member]
us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
Net reserve for unpaid losses and loss adjustment expenses, beginning of period
Net reserves for unpaid losses and loss adjustment expenses, end of period
us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseOpeningBalanceAdjustments
Less: reinsurance recoverable on unpaid losses
Reinsurance recoverable on unpaid losses, net of allowance
Other investment loss
Other Investment Income (Loss)
Represents the amount of other investment income (loss) recognized during the period.
Capitalized Contract Costs [Member]
Represents capitalized contract costs.
Restrictions on Cash and Cash Equivalents [Table Text Block]
Intangible assets, net
Total
us-gaap_FiniteLivedIntangibleAssetsNet
Balance
Document Fiscal Period Focus
Cost
Document Fiscal Year Focus
Investment, Name [Domain]
Amendment Flag
Technology-Based Intangible Assets [Member]
Financing Receivables [Text Block]
Common Stock [Member]
Balance
us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Goodwill
Goodwill
Other liabilities, exclusive of debt
Document Period End Date
Investment [Table Text Block]
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
Lease cost
Changes in fair values
us-gaap_LeaseCost
Total Lease Cost
Business Combination [Domain]
Entity File Number
Entity Tax Identification Number
Boston Omaha [Member]
Represents information regarding the entity Boston Omaha only.
Business Combination [Axis]
Entity [Domain]
Entity Central Index Key
us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Business Acquisition, Percentage of Voting Interests Acquired
Entity Registrant Name
Entity Current Reporting Status
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Entity Filer Category
Entity Shell Company
Entity Emerging Growth Company
Entity Small Business
us-gaap_OperatingIncomeLoss
Segment Income (Loss) from Operations
Investments [Domain]
U.S. Treasury notes, Gross Unrealized Gain (Loss)
boc_EquityMethodInvestmentShares
Equity Method Investment, Shares (in shares)
The number of shares.
Realized gains (losses)
Operating Revenues
Total Revenues
Revenue
Revenues:
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
Accounts receivable, net
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Cost of revenues (exclusive of depreciation and amortization)
Entity Address, State or Province
Entity Address, City or Town
us-gaap_InterestExpenseNonoperating
Interest expense
Accumulated deficit
Entity Address, Address Line One
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
City Area Code
boc_DebtInstrumentIncrementalDrawdowns
Debt Instrument, Incremental Drawdowns
Represents the incremental drawdowns related to the debt.
Credit Facility [Member]
Related to the credit facility.
boc_UnusedPortionOfDebtFeePercent
Unused Portion of Debt, Fee, Percent
The unused debt fee percentage.
Local Phone Number
boc_DebtInstrumentTermPrinciplePayments
Debt Instrument, Term, Principle Payments (Year)
The period of time in which the principle payments are due for the term loan.
Entity Address, Postal Zip Code
boc_NumberOfOperatingSubsidiaries
Number of Operating Subsidiaries
Represents the number of operating subsidiaries.
Cash and Cash Equivalents Disclosure [Text Block]
Title of 12(b) Security
Security Exchange Name
Trading Symbol
Class of Stock [Axis]
Base Rate [Member]
Variable Rate [Axis]
Variable Rate [Domain]
Revenue [Policy Text Block]
Entity Common Stock, Shares Outstanding
The 24th Street Funds, Special Purpose Entities [Member]
Represents investments in special purpose entities.
Boston Omaha Asset Management, LLC [Member]
The set of legal entities associated with a report.
Net loss attributable to noncontrolling interests
BOAM [Member]
Represents the BOAM segment.
us-gaap_ProfitLoss
Net (loss) income
Guarantor Obligation [Table]
Scenario [Axis]
Scenario [Domain]
Holdback Cash Consideration [Member]
Represents the retention of a portion of the purchase price.
Forecast [Member]
Special Purpose Entities [Member]
Represents in investments in Special Purpose Entities.
us-gaap_NetCashProvidedByUsedInContinuingOperations
Net (Decrease) Increase in Cash, Cash Equivalents, and Restricted Cash from Continuing Operations
Property, Plant, and Equipment [Table]
Income taxes
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Investment, Name [Axis]
Receivable [Domain]
Long-Lived Asset, Class [Axis]
Sale of Stock [Domain]
Total assets from continuing operations
us-gaap_Assets
Assets
Total Assets
Cash and cash equivalents
Impaired Assets to be Disposed of by Method Other than Sale by Type [Axis]
us-gaap_CashDivestedFromDeconsolidation
Capital contributions to discontinued operations
us-gaap_InvestmentOwnedAtFairValue
Investment Owned, Fair Value
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Investments in and Advances to Affiliates [Table Text Block]
Accounts receivable, gross
Income (Loss) from Discontinued Operations, net of income taxes
us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
Noncontrolling interest in subsidiary loss
Net Loss from Continuing Operations, net of tax
Net Loss from Continuing Operations, net of tax
Net loss from operations
us-gaap_EarningsPerShareDiluted
Diluted Net Loss per Share (in dollars per share)
Investment [Text Block]
us-gaap_InvestmentOwnedBalanceShares
Investment Owned, Balance, Shares (in shares)
Investments
Represents the total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle)excluding investments in unconsolidated affiliates
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
U. S. Treasury securities
Sky Harbour Group Corporation Class A Common Stock [Member]
Represents the class A common stock of Sky Harbour Group Corporation.
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
boc_ClassOfWarrantOrRightRepurchasedDuringThePeriod
Class of Warrant or Right, Repurchased During the Period (in shares)
Represents the number of warrants or rights repurchased during the period.
Equity Method Investments [Table Text Block]
Investment Holdings [Table]
Separation Agreement [Member]
Relating to separation agreement.
boc_StockIssuedDuringPeriodSharesRepurchaseOfEquity
Stock Issued During Period, Shares, Repurchase of Equity (in shares)
Represents the number of shares issued during the period to repurchase equity.
Intangible Asset [Text Block]
us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold
Cost of insurance revenues (exclusive of depreciation and amortization)
Accounts and Financing Receivables [Table]
Investment Type [Axis]
boc_SecuritiesRepurchaseAgreementEquityIssued
Securities Repurchase Agreement, Equity Issued (in shares)
Represents the equity issued for a securities repurchase agreement.
boc_SecuritiesRepurchaseAgreementConsiderationTransferred
Securities Repurchase Agreement, Consideration Transferred
Represents the amount of consideration transferred as part of a securities repurchase agreement.
Consolidation, Policy [Policy Text Block]
Trade Accounts Receivable [Member]
Disposal Group Name [Domain]
Interest and dividend income
Receivable Type [Axis]
Interest Paid in Cash
The 24th Street Asset Management, LLC [Member]
Relating to The 24th Street Asset Management, LLC.
us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Revenue
Intangible Asset, Finite-Lived [Table]
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total Equity
Balance
Balance
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table Text Block]
Disposal Group Name [Axis]
boc_InvestmentOwnedSharesSoldValue
Investment Owned, Shares Sold, Value
The value of shares sold.
Lease liabilities
boc_IncreaseDecreaseInLeaseLiabilities
The increase (decrease) during the reporting period in the amount of lease liabilities.
us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Disposal Group, Including Discontinued Operation, Consideration
Discontinued Operations, Policy [Policy Text Block]
Variable and short-term lease cost
Amount of variable and short-term lease cost.
Noncontrolling Interest [Member]
Operating Lease Assets and Liabilities [Table Text Block]
Tabular disclosure of operating lease assets and liabilities.
us-gaap_StockholdersEquity
Total Boston Omaha Stockholders' Equity
Supplemental Cash Flow Information Related to Operating Leases [Table Text Block]
Tabular disclosure of supplemental cash flow information related to operating leases.
Stock, Class of Stock [Table]
US Treasury Notes Securities [Member]
Nature of Operation, Product Information, Concentration of Risk [Table]
us-gaap_PaymentsOfDistributionsToAffiliates
Distributions to noncontrolling interests
Lease assets
Right of use assets
us-gaap_PaymentsForRepurchaseOfEquity
Payments for Repurchase of Equity
Stock repurchased
Other long-term liabilities
boc_ClassOfWarrantOrRightExercisedSharesValue
Class of Warrant or Right, Exercised Shares, Value
The value of the warrants exercised.
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Revenues