Note 18 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)	2,600,000
Share-based Payment Arrangement, Expense, Tax Benefit	$ 1,657	$ 2,871	$ 2,856
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 2,492
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	11 months 4 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 6,716	6,913	4,407
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	707	1,042	6,323
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expense	$ 6,632	$ 11,161	$ 11,351

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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