Note 14 - Employee Stock Purchase Plan (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended		15 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Jun. 23, 2021
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 55	$ 65	$ 56
Share Price (in dollars per share)	$ 7.63	$ 6.82	$ 10.73	$ 7.63		$ 7.63
Share-based Compensation Arrangement by Share-based Payment Award, Discount Amount				$ 28	$ 0
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)							250,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)				21,749		25,740
Stock Issued During Period, Value, Employee Stock Purchase Plan				$ 148		$ 191
Shares Issued, Price Per Share (in dollars per share)	$ 6.49	$ 5.80	$ 9.12	$ 6.49		$ 6.49
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date				15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Discount Amount				$ 28
Share-Based Payment Arrangement, Expense				$ 34