Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts receivable, allowance, current	$ 14,207	$ 13,619
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	5,388,074	5,141,688
Common stock, shares outstanding (in shares)	5,388,074	5,141,688