Stock-Based Compensation - RSU (Details) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Restricted Stock Awards
Shares [Roll Forward]
Non-vested, beginning of period (in shares)	1,022
Granted (in shares)	23
Vested (in shares)	(4)
Non-vested, end of period (in shares)	1,041
Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested, beginning of period (in dollars per share) | $ / shares	$ 5.27
Granted (in dollars per share) | $ / shares	15.37
Vested (in dollars per share) | $ / shares	4.17
Non-vested, end of period (in dollars per share) | $ / shares	$ 5.50
Unrecognized compensation expense related to restricted stock awards | $	$ 4.6
Weighted average remaining contractual terms	1 year 6 months
Performance Shares
Shares [Roll Forward]
Granted (in shares)	101
Vested (in shares)	0
Non-vested, end of period (in shares)	101
Weighted Average Grant Date Fair Value [Roll Forward]
Granted (in dollars per share) | $ / shares	$ 15.37
Non-vested, end of period (in dollars per share) | $ / shares	$ 15.37
Unrecognized compensation expense related to restricted stock awards | $	$ 1.4
Weighted average remaining contractual terms	2 years 1 month 6 days