CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
CONSOLIDATED BALANCE SHEETS (Unaudited)
Accounts receivable reserves	$ 199	$ 249
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	35,302,549	35,302,549
Common stock, shares outstanding (in shares)	34,411,616	34,407,654
Treasury stock, common shares (in shares)	890,933	894,895