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Note 10 - Debt (Details Textual) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 02, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021
Interest Rate Swap [Member] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  | $ 30.0
The 2021 Swaps [Member] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  | $ 60.0
The 2021 Swaps One [Member] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  | $ 30.0 |
Derivative, Fixed Interest Rate |  |  |  |  |  | 1.3055% | 1.3055%
The 2021 Swaps Two [Member] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  | $ 30.0 |
Derivative, Fixed Interest Rate |  |  |  |  |  | 1.318% | 1.318%
Credit and Security Agreement with KeyBank [Member] |  |  |  |  |  |  |
Long-Term Debt, Percentage Bearing Variable Interest, Amount |  | $ 52.5 |  | $ 52.5 |  |  | $ 52.5
Debt, Weighted Average Interest Rate |  | 2.56% |  | 2.56% |  |  | 1.60%
Debt Instrument, Interest Rate, Effective Percentage |  | 2.98% |  | 2.98% |  |  |
Interest Expense, Debt, Total |  | $ 0.8 | $ 0.7 | $ 1.5 | $ 1.5 |  |
Credit and Security Agreement with KeyBank [Member] | Term Loan [Member] |  |  |  |  |  |  |
Long-Term Debt, Total |  | $ 112.5 |  | $ 112.5 |  |  | $ 112.5
Credit and Security Agreement with KeyBank [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 175.0 |  |  |  |  |  |
Debt Instrument, Term (Year) | 5 years |  |  |  |  |  |
Line of Credit Facility, Maximum Letters of Credit Capacity | $ 10.0 |  |  |  |  |  |
Line of Credit Facility, Maximum Swing Line Loan Capacity | $ 5.0 |  |  |  |  |  |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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