Stockholders' Equity - Restricted Stock Units (Details) - Service-Based RSUs - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Shares
Outstanding at the beginning of the period (in shares)	978,716
Granted (in shares)	894,344
Vested (in shares)	(722,193)
Forfeited or expired (in shares)	(23,925)
Outstanding at the end of the period (in shares)	1,126,942	978,716
Weighted Average Fair Value at Grant Date
Outstanding at the beginning of the period (in dollars per share)	$ 1.71
Granted (in dollars per share)	10.24	$ 2.56
Vested (in dollars per share)	2.54
Forfeited or expired (in dollars per share)	6.86
Outstanding at the end of the period (in dollars per share)	$ 8.08	$ 1.71
Unrecognized compensation cost	$ 6.2
Unrecognized compensation cost, weighted-average period	1 year 9 months 18 days
Stock-based compensation expense	$ 3.9	$ 1.0	$ 1.5
Vesting over the first year
Stock-based compensation
Vesting percentage	34.00%
Vesting over the second year
Stock-based compensation
Vesting percentage	33.00%
Vesting over the third year
Stock-based compensation
Vesting percentage	33.00%