Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Variable interest entities, cash and cash equivalents	$ 8,015	$ 1,942
Allowance for doubtful accounts	401	447
Variable interest entities, net of allowance	15,014	8,192
Variable interest entities, accounts payable	2,466	692
Variable interest entities, accrued expenses	3,269	1,349
Variable interest entities, other long-term liabilities	$ 2	$ 157
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	99,274,594	74,898,380
Common stock, shares outstanding	99,274,594	74,898,380
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, issued
Preferred stock, outstanding