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Note 9 - Long-term Debt (Details Textual) |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 19, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jun. 30, 2022 USD ($) | Mar. 31, 2022 | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Jun. 09, 2021 USD ($) | Jun. 13, 2019 USD ($)
Gain (Loss) on Extinguishment of Debt, Total |  |  | $ 0 |  | $ (4,936,000) | $ 0 | $ (4,936,000) |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax |  |  |  |  |  | (1,329,000) | (1,560,000) |  |  |
Interest Expense, Debt, Total |  |  | $ 119,000 |  | 204,000 | 238,000 | 1,998,000 |  |  |
Gains Losses on Derivatives Expected to Be Amortized from OCITO Earnings |  |  |  |  |  | $ 687,000 |  |  |  |
Interest Rate Swap Effective May 31, 2019 Through May 31, 2024 [Member] |  |  |  |  |  |  |  |  |  |
Derivative Liability, Notional Amount |  |  |  |  |  |  |  |  |  | $ 175,000,000
Derivative, Fixed Interest Rate |  |  | 2.495% |  |  | 2.495% |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |
Derivative Counter Party Risk Number of Financial Institutions |  |  |  |  |  | 1 |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax |  |  | $ (291,000) |  | $ 402,000 | $ (582,000) | $ 1,150,000 |  |  |
Derivative, Notional Amount | $ 125,000,000 |  |  |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Flow Rate, Percentage | 2.718% |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  | 1,716,000 |  |  | 1,716,000 |  | $ 6,428,000 |  |
Interest Rate Swap [Member] | Accrued Expenses and Other Current Liabilities [Member] |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  | 1,051,000 |  |  | 1,051,000 |  | 3,479,000 |  |
Interest Rate Swap [Member] | Other Noncurrent Assets [Member] |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  | 665,000 |  |  | 665,000 |  | 2,949,000 |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount, Total |  |  | 444,000 |  |  | 444,000 |  | 499,000 |  |
Long-Term Debt, Total |  |  | 213,306,000 |  |  | 213,306,000 |  | 218,875,000 |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 100,000,000 |
Long-Term Line of Credit, Total |  |  | 58,000,000 |  |  | 58,000,000 |  | 0 |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  | 41,050,000 |  |  | $ 41,050,000 |  | 99,050,000 |  |
Revolving Credit Facility [Member] | New York Federal Reserve Bank NYFRB [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 0.50% |  |  |  |
Revolving Credit Facility [Member] | One Month Adjusted London Interbank Offered Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 1.00% |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  | 0.30% |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] | Leverage Ratio Two [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 1.00% |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  | 0.15% |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] | Leverage Ratio Two [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 0.375% |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | 10,000,000 |
Line of Credit [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument Percentage of Net Cash Proceeds of Certain Events Paid as Additional Principal Prepayments |  |  |  |  |  | 100.00% |  |  |  |
Debt Instrument Percentage of Excess Cash Flow Paid as Additional Principal Prepayments |  |  |  |  |  | 50.00% |  |  |  |
Debt Instrument Reduced Percentage of Excess Cash Flow Paid As Additional Principal Prepayments Upon Achievement of Certain Leverage Ratio Thresholds One |  |  |  |  |  | 0.00% |  |  |  |
Debt Instrument Voluntary Payment |  | $ 20,000,000 |  |  |  |  |  |  |  |
Line of Credit [Member] | Maximum [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument Period Before Fiscal Year End for Additional Principal Prepayments of Debt from Excess Cash Flow (Day) |  |  |  |  |  | 150 days |  |  |  |
Senior Secured Term Loan Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | 225,000,000 |
Senior Secured Term Loan Facility [Member] | Maximum [Member] | Leverage Ratio One [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.00% |  | 2.00% |  |  |  |
Senior Secured Term Loan Facility [Member] | Minimum [Member] | Leverage Ratio One [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 1.375% |  |  |  |
Swingline Loan [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | 15,000,000 |
Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount, Total |  |  | 563,000 |  |  | $ 563,000 |  |  |  |
Debt Issuance Costs, Net, Total |  |  | $ 1,409,000 |  |  | $ 1,409,000 |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  |  | 972,000 |  |
Write off of Unamortized Debt Discount |  |  |  |  |  |  |  | 3,964,000 |  |
Gain (Loss) on Extinguishment of Debt, Total |  |  |  |  |  |  |  | $ 4,936,000 |  |
Debt Instrument Covenant Leverage Ratio |  |  |  |  |  | 3.50% |  |  |  |
Debt Instrument, Covenant Consolidated Interest Coverage Ratio |  |  |  |  |  | 3.00% |  |  |  |
Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility Increase in Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 175,000,000 |

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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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