Stock Based Compensation - Changes in status of non-vested share awards (Details) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Non-vested Shares Under Option
Non-vested at Beginning of period (in shares)	2,137,050
Granted (in shares)	0
Vested (in shares)	(470,083)
Forfeited (in shares)	(37,920)
Non-vested at end of period (in shares)	1,629,047
Weighted Average Grant Date Fair Value per Share
Non-vested at Beginning of period (in dollars per share)	$ 1.21
Granted (in dollars per share)		$ 3.59
Vested (in dollars per share)	0.77
Forfeited (in dollars per share)	0.17
Non-vested at end of period (in dollars per share)	$ 1.32