Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Apr. 30, 2016	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Capital stock, shares authorized (in shares)		210,000,000
Common stock, shares authorized (in shares)		200,000,000	200,000,000
Common stock, par value (in USD per share)		$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)		10,000,000	10,000,000
Preferred stock, par value (in USD per share)		$ 0.0001
Common stock, shares outstanding (in shares)		26,056,735	16,005,408
Common stock repurchased (in shares)	9,500
Common stock repurchased, value	$ 155
Preferred stock, shares outstanding (in shares)		0	0