Note 4 - Revisions in Estimates (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Gross Profit, Total	$ 49,775	$ 53,712
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	$ (19,035)	$ (63,273)
Earnings Per Share, Diluted, Total (in dollars per share)	$ (0.29)	$ (1.45)
Revisions in Estimates [Member]
Gross Profit, Total	$ 5,000	$ 5,300
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total		$ 4,100
Earnings Per Share, Diluted, Total (in dollars per share)		$ 0.09