Stock-based Compensation - Stock Option Activity (Details) - Stock Option $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares
Number of Options
Outstanding at beginning of period (shares) | shares	2,847,101
Options granted (shares) | shares	5,000
Options exercised (shares) | shares	(181,456)
Options forfeited (shares) | shares	(9,261)
Outstanding at end of period (shares) | shares	2,661,384
Weighted-Average Exercise Price Per Share
Outstanding at beginning of period (USD per share) | $ / shares	$ 13.22
Options granted (USD per share) | $ / shares	29.03
Options exercised (USD per share) | $ / shares	1.90
Options forfeited (USD per share) | $ / shares	22.62
Outstanding at end of period (USD per share) | $ / shares	$ 13.99
Aggregate Intrinsic Value
Intrinsic value of options exercised | $	$ 5,114
Intrinsic value of options outstanding | $	$ 33,358