Stock-Based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Number of shares
Balance at beginning of period | shares	1,420,942
Granted | shares	71,940
Exercised | shares	(1,289)
Canceled/forfeited | shares	(9,172)
Balance at end of period | shares	1,482,421
Vested and expected to vest at end of period | shares	1,385,789
Exercisable at end of period | shares	400,170
Weighted average exercise price per share
Balance at beginning of period (in dollars per share) | $ / shares	$ 10.35
Granted ( in dollars per share) | $ / shares	15.87
Exercised (in dollars per share) | $ / shares	5.93
Canceled/forfeited (in dollars per share) | $ / shares	11.55
Balance at end of period (in dollars per share) | $ / shares	10.61
Vested and expected to vest at end of period (in dollars per share) | $ / shares	10.50
Exercisable at end of period (in dollars per share) | $ / shares	$ 5.94
Weighted average remaining contractual term
Weighted average remaining contractual term, outstanding	8 years 6 months 26 days
Weighted average remaining contractual term, Vested and expected to vest	8 years 6 months 4 days
Weighted average remaining contractual term, Exercisable	6 years 1 month 17 days