Stock-Based Compensation - Summary of Unvested RSU Award Activity (Details) - Restricted Stock Units	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Shares
Beginning period (in shares) | shares	810,995
Granted (shares) | shares	1,079,150
Forfeited (in shares) | shares	(45,643)
Vested (shares) | shares	(736,706)
End period (in shares) | shares	1,107,796
Weighted-Average Grant Date Fair Value
Beginning of period (in dollars per share) | $ / shares	$ 8.83
Granted (in dollars per share) | $ / shares	6.04
Forfeited (in dollars per share) | $ / shares	7.16
Vested (in dollars per share) | $ / shares	8.06
End of period (in dollars per share) | $ / shares	$ 6.69