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, 2023
Outstanding & Unvested, shares (in shares)					238
Outstanding & Unvested, weighted average grant-date fair value (in dollars per share)	[1]				$ 6.1
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period		18	125	2	91
Granted, weighted average grant-date fair value (in dollars per share)	[1]				$ 4.64
Converted to common stock, shares (in shares)					(127)
Converted to common stock, weighted average grant-date fair value (in dollars per share)	[1]				$ 5.7
Cancelled, shares (in shares)					(11)
Cancelled, weighted average grant-date fair value (in dollars per share)	[1]				$ 6.54
Forfeited, shares (in shares)					(51)
Forfeited, weighted average grant-date fair value (in dollars per share)	[1]				$ 5.62
Outstanding & Unvested, shares (in shares)					140
Outstanding & Unvested, weighted average grant-date fair value (in dollars per share)	[1]				$ 5.23

[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.