Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowances for credit losses	$ 1,298,000	$ 160,000
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Redeemable convertible preferred stock, authorized (in shares)	10,000,000	10,000,000
Redeemable convertible preferred stock, issued (in shares)	40,000	40,000
Redeemable convertible preferred stock, outstanding (in shares)	40,000	40,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, issued (in shares)	106,308,767	103,000,594
Common stock, outstanding (in shares)	106,308,767	103,000,594