Note 14 - Earnings Per Share - Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Details) - USD ($) shares in Thousands, $ in Thousands		4 Months Ended	8 Months Ended	12 Months Ended
		Dec. 31, 2020	Aug. 21, 2020	Dec. 31, 2021
Net income as reported		$ (16,429)	$ (85,034)	$ 55,559
Participating basic earnings (a)	[1]	0		(4,674)
Basic earnings attributable to common stockholders		(16,429)		50,885
Reallocation of participating earnings		0		58
Diluted net income attributable to common stockholders		$ (16,429)		$ 50,943
Basic weighted average shares outstanding (in shares)		91,629		93,127
Dilutive warrants and unvested stock options (in shares)		0		145
Dilutive unvested restricted stock (in shares)		0		1,500
Diluted weighted average shares outstanding (in shares)		91,629		94,772

[1] Certain unvested restricted stock awarded to outside directors 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. Certain unvested restricted stock awarded to employee members of the board of directors do not represent participating securities because, while they participate in dividends with the common equity holders of the Company, the dividends associated with such unvested restricted stock are forfeitable in connection with the forfeitability of the underlying restricted stock. 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.