Note 7 - Stock-based Awards - Nonvested Award Activity (Details) - Stock Unit Award [Member] - $ / shares shares in Thousands					12 Months Ended
		Aug. 12, 2022	May 20, 2022	Apr. 04, 2022	Dec. 31, 2022
Outstanding & Unvested at beginning of period (in shares)					224
Outstanding & Unvested at beginning of period, weighted average price per share (in dollars per share)	[1]				$ 5.48
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		18	126	2,000	146
Granted, weighted average price per share (in dollars per share)	[1]				$ 6.53
Converted to common stock (in shares)					(90)
Converted to common stock, weighted average price per share (in dollars per share)	[1]				$ 6.33
Cancelled (in shares)					(12)
Cancelled, weighted average price per share (in dollars per share)	[1]				$ 6.29
Forfeited (in shares)					(30)
Forfeited, weighted average price per share (in dollars per share)	[1]				$ 6.26
Outstanding & Unvested at end of period (in shares)					238
Outstanding & Unvested at end of period, weighted average price per share (in dollars per share)	[1]				$ 6.10

[1] Weighted average price per share is the weighted grant price based on the closing market price of each of the stock grants related to each transaction type. The weighted average fair value is the weighted average share price times the number of shares.