Share-Based Compensation - Activity of Stock Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Stock Option Activity, Additional Disclosures
Share price (in dollars per share)	$ 3.48
Service period based stock options
Number of Options
Options Outstanding Beginning Balance (in shares)	10,581
Options Granted (in shares)	2,910
Options Exercised (in shares)	0
Options Forfeited (in shares)	(646)
Options Outstanding Ending Balance (in shares)	12,845	10,581
Options Exercisable (in shares)	7,563
Weighted Average Exercise Price
Options Outstanding Beginning Balance (in dollars per share)	$ 3.63
Options Granted (in dollars per share)	1.55
Options Exercised (in dollars per share)	0
Options Forfeited (in dollars per share)	3.91
Options Outstanding Ending Balance (in dollars per share)	3.14	$ 3.63
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 4.08
Stock Option Activity, Additional Disclosures
Weighted Average Remaining Contractual Term, Options Outstanding	6 years 7 months 6 days	5 years 10 months 24 days
Weighted Average Remaining Contractual Term, Options Exercisable	4 years 7 months 6 days
Aggregate Intrinsic Value, Options Outstanding	$ 12,472	$ 4
Aggregate Intrinsic Value, Options Exercised	0
Aggregate Intrinsic Value, Options Exercisable	$ 3,189
Performance based stock options
Number of Options
Options Outstanding Beginning Balance (in shares)	41
Options Granted (in shares)	0
Options Exercised (in shares)	0
Options Forfeited (in shares)	(41)
Options Outstanding Ending Balance (in shares)	0	41
Options Exercisable (in shares)	0
Weighted Average Exercise Price
Options Outstanding Beginning Balance (in dollars per share)	$ 4.34
Options Granted (in dollars per share)	0
Options Exercised (in dollars per share)	0
Options Forfeited (in dollars per share)	4.34
Options Outstanding Ending Balance (in dollars per share)	0	$ 4.34
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 0
Stock Option Activity, Additional Disclosures
Weighted Average Remaining Contractual Term, Options Outstanding	0 years	1 month 6 days
Weighted Average Remaining Contractual Term, Options Exercisable	0 years
Aggregate Intrinsic Value, Options Outstanding	$ 0	$ 0
Aggregate Intrinsic Value, Options Exercised	0
Aggregate Intrinsic Value, Options Exercisable	$ 0