Net Income Per Share Attributable to Common Stockholders - Outstanding Securities Considered Anti-Dilutive (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	479	622
Common stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	479	616
Warrants for Common Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)		6