Note 1 - Basis of Presentation - Schedule of Antidilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive securities excluded from calculation of earnings per share (in shares)	189	42,321	7,056	51,101
Restricted Stock Units (RSUs) [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	189	42,321	7,056	51,101
Performance Shares [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	0	0	0	0