Stockholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Sep. 30, 2020
Number of Shares
Outstanding at September 30, 2020 (in shares)	1,162,505
Granted (in shares)	0
Exercised (in shares)	(241,490)
Canceled (in shares)	0
Outstanding at December 31, 2020 (in shares)	921,015
Weighted-Average Exercise Price
Outstanding at September 30, 2020 (in dollars per share)	$ 7.51
Granted (in dollars per share)	0
Exercised (in dollars per share)	7.82
Canceled (in dollars per share)	0
Outstanding at December 31, 2020 (in dollars per share)	$ 7.43
Weighted-Average Remaining Contractual Term (in Years)
Outstanding	6 years 2 months 12 days	6 years 1 month 6 days
Outstanding, Aggregate Intrinsic Value	$ 9,536		$ 6,081
Vested and Expected to Vest at December 31, 2020
Outstanding (in shares)	921,015
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 7.43
Outstanding, Weighted Average Remaining Contractual Term (in Years)	6 years 2 months 12 days
Outstanding, Aggregate Intrinsic Value (in thousands)	$ 9,536
Exercisable at December 31, 2020 (in shares)	585,487
Exercisable at December 31, 2020, Weighted Average Exercise Price (in dollars per share)	$ 6.25
Exercisable at December 31, 2020, Weighted Average Remaining Contractual Term (in Years)	5 years 1 month 6 days
Exercisable at December 31, 2020, Aggregate Intrinsic Value (in thousands)	$ 6,750