Note 8 - Stock Incentive Plan - Schedule of Nonvested Performance Based Units Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock based compensation	$ 685	$ 772	$ 244
Performance Shares [Member]
Unvested, shares (in shares)	26,645	911
Unvested, grant date fair value (in dollars per share)	$ 29.40	$ 37.25
Fully vested shares granted (in shares)	35,114	27,579
Weighted average grant date price per share (in dollars per share)	$ 16.55	$ 29.40
Forfeited, shares (in shares)	(14,980)	(934)
Forfeited, grant date fair value (in dollars per share)	$ 21.04	$ 29.40
Vested and issued, shares (in shares)	(9,859)	(911)
Vested and issued, grant date fair value (in dollars per share)	$ 29.40	$ 37.25
Unvested, shares (in shares)	36,920	26,645	911
Unvested, grant date fair value (in dollars per share)	$ 20.57	$ 29.40	$ 37.25
Stock based compensation	$ 376	$ 321
Unrecognized compensation expense, end of period	357	467
Intrinsic value, end of period	$ 388	$ 599
Weighted-average remaining vesting term (in years) (Year)	1 year 2 months 12 days	1 year 4 months 24 days