Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Beginning balance	$ 714	$ 121	$ 15
Ending balance	2,970	714	121
Federal and State
Tax positions related to current year	$ 2,256	$ 593	$ 106