Stock Incentive Plan - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Number of Stock Options Outstanding
Balance, Beginning	1,356,245
Options exercised	(23,800)
Balance, Ending	1,332,445	1,356,245
Exercisable, Ending	1,332,445
Weighted Average Exercise Price
Balance, Beginning	$ 3.30
Options exercised	2.58
Balance, Ending	3.31	$ 3.30
Exercisable, Ending	$ 3.31
Weighted Average Remaining Contractual Term, Options Outstanding (in years)	3 years 8 months 23 days	3 years 11 months 19 days
Weighted Average Remaining Contractual Term, Options Exercisable (in years)	3 years 8 months 23 days
Aggregate Intrinsic Value, Options Outstanding	$ 61,627	$ 119,830
Aggregate Intrinsic Value, Options Exercisable	$ 61,627