Stock-Based Compensation - Summary of Unvested Award Activity (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Restricted Stock Units
Shares
Unvested at beginning period (in shares) | shares	1,050,908
Granted (in shares) | shares	546,600
Vested (in shares) | shares	(266,259)
Unvested at end period (in shares) | shares	1,331,249
Weighted-Average Grant Date Fair Value
Unvested at beginning of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 5.55
Granted, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	5.33
Vested, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	5.99
Unvested at end of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 5.38
Performance Stock Units
Shares
Unvested at beginning period (in shares) | shares	1,879,425
Granted (in shares) | shares	1,099,800
Vested (in shares) | shares	(455,000)
Unvested at end period (in shares) | shares	2,524,225
Weighted-Average Grant Date Fair Value
Unvested at beginning of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 7.65
Granted, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	10.85
Vested, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	13.75
Unvested at end of period, Weighted-Average Grant Date Fair Value (in dollars per share) | $ / shares	$ 7.94