Consolidated Balance Sheets (Parentheticals) $ in Thousands	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Statement of Financial Position [Abstract]
Allowance for doubtful accounts | $	$ 2,754	$ 1,250
Common stock, par value (in usd per share) | (per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares, issued (in shares)	107,509,096	95,456,862
Common stock, shares, outstanding (in shares)	107,509,096	95,456,862