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Note 10 - Financing Arrangements (Details Textual) - USD ($) $ in Millions		3 Months Ended
	May 31, 2022	Mar. 31, 2023
Interest Rate Swap [Member]
Derivative Liability		$ 2.8
Credit Facility [Member]
Long-Term Line of Credit, Total	$ 5.0
Revolving Credit Facility [Member] | Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	100.0
Letter of Credit [Member] | Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	15.0
Swing Line Subfacility [Member] | Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	20.0
Senior Term Loan Facility [Member]
Debt Instrument, Face Amount	$ 350.0
Senior Term Loan Facility [Member] | Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	0.75%
Senior Term Loan Facility [Member] | Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Senior Term Loan Facility [Member] | Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		2.50%
Senior Term Loan Facility [Member] | Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Senior Term Loan Facility [Member] | Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.75%
Subordinated Credit Facility [Member]
Debt Instrument, Face Amount	$ 90.0
Subordinated Credit Facility [Member] | Minimum [Member]
Debt Instrument, Prepayment Fee, Percent	1.00%
Subordinated Credit Facility [Member] | Maximum [Member]
Debt Instrument, Prepayment Fee, Percent	2.00%
Subordinated Credit Facility [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	8.00%
Subordinated Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	9.00%	9.10%

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