CONSOLIDATED BALANCE SHEETS - UNAUDITED (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,682	$ 1,848
Preferred stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)	5,000	6,578
Preferred stock, issued (in shares)	0	6,140
Preferred stock, outstanding (in shares)	0	6,140
Preferred stock, aggregate liquidation preference	$ 0	$ 19,436
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	200,000	69,361
Common stock, issued (in shares)	42,961	25,086
Common stock, outstanding (in shares)	42,961	25,086