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Note 9 - Debt (Details Textual) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2020
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 100.0
Minimum [Member] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.15% |  |  |
Maximum [Member] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.25% |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |  |
London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Forecast [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.00% |  |
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.25% |  |  |
Base Rate [Member] | Minimum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.00% |  |  |
Base Rate [Member] | Maximum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.25% |  |  |
Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 75.0 |  | $ 75.0 |
Line of Credit Facility, Remaining Borrowing Capacity |  |  | $ 13.2 |
Term Loan [Member] |  |  |  |
Debt Instrument, Face Amount | 25.0 |  |  |
Debt Instrument, Annual Principal Payment | $ 3.6 |  |  |
Debt Instrument, Term (Year) | 5 years |  |  |

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