Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of fair value of common stock	100.00%
Exercises in period, intrinsic value	$ 363
Options granted, weighted average grant date fair value (in dollars per share)	$ 10.78	$ 7.05	$ 4.74
Incentive Stock Options and Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares based compensation, vested period (in years)	4 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares based compensation, vested period (in years)	4 years
Share based compensation, restricted stock units granted (in shares)	116,689
Share based compensation, restricted stock units granted (in dollars per share)	$ 14.75
Restricted stock unites vested, percentage	25.00%
Share based compensation, grant date fair value	$ 1,700
Unrecognized compensation cost of stock based awards	$ 6,400
Unrecognized compensation cost of stock based awards, recognition period	3 years 1 month 6 days
Two Thousand Fifteen Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, authorized (in shares)	969,340
Common stock, reserved for future issuance (in shares)	100,000
Two Thousand Seventeen Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, authorized (in shares)	170,915
Common stock, reserved for future issuance (in shares)	20,000,000
Aggregate intrinsic value, options exercised	4.00%
Two Thousand Nineteen Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, authorized (in shares)	400,000
Common stock, reserved for future issuance (in shares)	250,000
Minimum | Non-Statutory Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares based compensation, vested period (in years)	3 years
Maximum | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (in years)	10 years
Maximum | Non-Statutory Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares based compensation, vested period (in years)	4 years