Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 99	$ 86	$ 531	$ 371
Effective income tax rate	0.77%	1.03%	1.38%	0.99%
Unrecognized tax provision	$ 600		$ 600
Unrecognized tax provision that would favorably impact effective tax rate	$ 600		$ 600