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Note 16 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)		$ 4
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)		$ 56,460
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares (in shares)		0
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount		$ 19,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		4,762,004	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		10 years
Share-based Payment Arrangement, Exercise of Option, Tax Benefit		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		4 years
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 7 months 6 days
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		$ 2,800	$ 1,500	$ 700
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 22,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		4,955,693
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	0 years	2 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years	3 years
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					67,739
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture, Total					$ 600