Note 17 - Net (Loss) Income Per Common Share - Calculation of Diluted Shares (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net (loss) income	$ (72,554)	$ 7,876	$ (79,620)	$ 6,758
Amount attributable to unvested restricted shares	0	0	0	(7)
Amount attributable to warrants outstanding	0	(215)	0	(208)
Net (loss) income allocated to common shareholders	$ (72,554)	$ 7,661	$ (79,620)	$ 6,543
Basic (in shares)	42,460,189	38,072,712	42,238,355	35,668,124
Basic (in dollars per share)	$ (1.71)	$ 0.20	$ (1.89)	$ 0.18
Amount attributable to unvested restricted shares	$ 0	$ (208)	$ 0	$ (200)
Amount attributable to warrants	0	0	0	(7)
Less: gain related to change in fair value of warrants	0	0	0	0
Diluted (loss) earnings per common share	$ (72,554)	$ 7,668	$ (79,620)	$ 6,551
Warrants (in shares)	0	0	0	36,709
Diluted weighted average shares issued and outstanding (in shares)	42,460,189	40,390,098	42,238,355	38,275,603
Diluted (in dollars per share)	$ (1.71)	$ 0.19	$ (1.89)	$ 0.17
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangements (in shares)	0	1,249,810	0	1,436,767
Restricted Stock [Member]
Share-Based Payment Arrangements (in shares)	0	1,067,576	0	1,134,003