Note 1 - Basis of Presentation - Schedule of Antidilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Antidilutive securities excluded from calculation of earnings per share (in shares)	1,047,846	61,650
Restricted Stock Units (RSUs) [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	952,942	61,650
Performance Shares [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	94,904	0