Note 12 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	12 Months Ended
	Feb. 24, 2024	May 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2008
Preferred Stock, Shares Authorized (in shares)			2,500	2,500	2,500
Preferred Stock, Par or Stated Value Per Share (in dollars per share)			$ 0.001	$ 0.001	$ 0.001
Common Stock, Shares Authorized (in shares)			50,000	50,000	50,000
Common Stock, Par or Stated Value Per Share (in dollars per share)			$ 0.001	$ 0.001	$ 0.001
Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)			929	10
Common Stock [Member] | Stock Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			2,200
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)		1,200
Common Stock [Member] | Stock Incentive Plan [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)			770
Common Stock [Member] | Registered Direct Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	929
Shares Issued, Price Per Share (in dollars per share)	$ 35
Proceeds from Issuance of Common Stock	$ 32,500
Legal Fees	$ 282
Redeemable Preferred Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			10
Temporary Equity, Redemption Price Per Share (in dollars per share)			$ 5
Dividends, Preferred Stock, Cash			$ 0
Undistributed Earnings Attributable to Preferred Stock			$ 0