Note 20 - Shareholder's Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Feb. 28, 2023	Jan. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Common Stock, Shares Authorized (in shares)			50,000,000	50,000,000
Common Stock, No Par Value (in dollars per share)			$ 0	$ 0
Common Stock, Shares, Outstanding, Ending Balance (in shares)			23,190,080	22,882,614
Dividends, Total			$ 0	$ 0
APIC, Share-Based Payment Arrangement, Other, Increase for Cost Recognition			$ 800	$ 500
Treasury Stock, Shares, Total (in shares)			247,450	247,450
Proceeds from Warrant Exercises			$ 545	$ 1,750
Subsequent Event [Member]
Proceeds from Warrant Exercises	$ 3,700
Warrants to Purchase Common Stock [Member]
Class of Warrant or Right, Outstanding (in shares)			4,464,736
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 5.00
Stock Issued During Period, Shares, Exercise of Warrants (in shares)			109,029	350,000
Proceeds from Warrant Exercises			$ 500	$ 1,800
Warrants to Purchase Common Stock [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, Exercise of Warrants (in shares)		611,547
Proceeds from Warrant Exercises		$ 3,100
Preferred Stock Converted into Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)			20,000	13,143
Conversion of Stock, Shares Issued (in shares)			125,000	82,143