Note 12 - Earnings Per Share (EPS) - EPS Compensations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income (loss)	$ (1,516)	$ 591
Allocation of earnings to participating convertible preferred stock	0	(3)
Numerator for basic EPS - income (loss) available to common shareholders	(1,516)	588
Add back - allocation of earnings to participating convertible preferred stock	0	3
Reallocation of earnings to participating convertible preferred stock considering potentially dilutive securities	0	(3)
Numerator for diluted EPS - adjusted income (loss) available to common shareholders	$ (1,516)	$ 588
Weighted average number of shares of shares of common stock outstanding (in shares)	51,664,912	45,248,782
Weighted average number of shares of common stock underlying vested restricted stock units (in shares)	865,052	386,403
Denominator for basic EPS - weighted average number of shares outstanding (in shares)	52,529,964	45,635,185
Effect of dilutive securities:
Warrants (in shares)	0	65,543
Denominator for diluted EPS - adjusted weighted average number of shares outstanding (in shares)	52,529,964	46,556,247
Restricted Stock Units (RSUs) [Member]
Effect of dilutive securities:
Dilutive securities (in shares)	0	845,893
Share-Based Payment Arrangement, Option [Member]
Effect of dilutive securities:
Dilutive securities (in shares)	0	9,626