Share-Based Compensation - Unvested RSAs Outstanding (Details) - RSAs	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Shares
Unvested RSAs, Beginning Balance (in shares) | shares	351,048
Granted (in shares) | shares	140,577
Forfeited (in shares) | shares	(5,450)
Vested (in shares) | shares	(128,292)
Unvested RSAs, Ending Balance (in shares) | shares	357,883
Weighted-Average Grant Date Fair Value
Unvested RSAs, Beginning Balance (in dollars per share) | $ / shares	$ 40.67
Granted (in dollars per share) | $ / shares	27.25
Forfeited (in dollars per share) | $ / shares	37.81
Vested (in dollars per share) | $ / shares	39.67
Unvested RSAs, Ending Balance (in dollars per share) | $ / shares	$ 36.30