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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

X

- Definition

Maximum letters of credit capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Maximum swing line loan capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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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.

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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payment on derivative.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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+ References

No definition available.

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