Stock-Based Compensation - Option Activity (Details) - STI Plan - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Number of Options
Beginning balance (in shares)	35,687,240
Granted (in shares)	4,000,000
Exercised (in shares)	(49,456)
Cancelled/forfeited (in shares)	(2,455,912)
Ending balance (in shares)	37,181,872	35,687,240
Weighted Average Exercise Price
Options outstanding, beginning of period, weighted average exercise price (in dollars per share)	$ 3.37
Granted (in dollars per share)	1.08
Exercised (in dollars per share)	0.89
Cancelled/forfeited (in dollars per share)	3.37
Options outstanding, end of period, weighted average exercise price (in dollars per share)	$ 3.15	$ 3.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual life, outstanding	7 years 6 months	7 years 3 months 18 days
Aggregate intrinsic value, outstanding	$ 31,000	$ 22
Aggregate Intrinsic Value, Exercised	$ 10,000