Note 14 - Earnings Per Share - Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Details) - USD ($) shares in Thousands, $ in Thousands		1 Months Ended	2 Months Ended	3 Months Ended						8 Months Ended	9 Months Ended
		Sep. 30, 2020	Aug. 21, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Aug. 21, 2020	Sep. 30, 2021
Net income (loss)		$ (11,516)	$ (56)	$ 8,047	$ 5,743	$ 4,744	$ (56)	$ (4,147)	$ (80,831)	$ (85,034)	$ 18,534
Participating basic earnings (a)	[1]			(1,193)							(1,669)
Basic earnings attributable to common stockholders				6,854							16,865
Reallocation of participating earnings				392							1
Diluted net income attributable to common stockholders				$ 7,246							$ 16,866
Basic weighted average shares outstanding (in shares)		91,592		92,676							92,648
Dilutive warrants and unvested stock options (in shares)				2							67
Diluted weighted average shares outstanding (in shares)		91,592		92,678							92,715

[1] Unvested restricted stock awards represent participating securities because they participate in nonforfeitable dividends with the common equity holders of the Company. Vested stock options represent participating securities because they participate in dividend equivalents with the common equity holders of the Company. Participating earnings represent the distributed and undistributed earnings of the Company attributable to the participating securities. Unvested stock options do not represent participating securities because, while they participate in dividend equivalents with the common equity holders of the Company, the dividend equivalents associated with unvested stock options are forfeitable in connection with the forfeitability of the underlying stock options.