Stock Based Compensation - Schedule of information with respect to stock options (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares
Number of Shares
Outstanding at December 31, 2018 (in shares)	678
Options granted (in shares)	122
Options exercised (in shares)	(256)
Forfeited and cancelled (in shares)	(144)
Expired (in shares)	0
Outstanding at December 31, 2019 (in shares)	400
Vested and expected to vest at December 31, 2019 (in shares)	376
Total shares exercisable as of December 31, 2019 (in shares)	152
Shares remaining available for grant (in shares)	1,100
Weighted Average Exercise Price
Outstanding at December 31, 2018 (in dollars per share) | $ / shares	$ 7.89
Options granted (in dollars per share) | $ / shares	24.87
Options Exercised (in dollars per share) | $ / shares	5.60
Forfeited and cancelled (in dollars per share) | $ / shares	7.18
Expired (in dollars per share) | $ / shares	0.00
Outstanding at December 31, 2019 (in dollars per share) | $ / shares	14.50
Vested and expected to vest at December 31, 2019 (in dollars per share) | $ / shares	9.81
Total shares exercisable as of December 31, 2019 (in dollars per share) | $ / shares	$ 9.05
Aggregate Intrinsic Value
Outstanding at December 31, 2018 | $	$ 12,605
Outstanding at December 31, 2019 | $
Vested and expected to vest at December 31, 2019 | $
Total shares exercisable as of December 31, 2019 | $