Income Taxes - Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Balance at beginning of the year	$ 2,827	$ 2,400	$ 1,565
Additions (reductions) for taxes positions related current year	(141)	55	1,088
Additions (reductions) for taxes positions related to prior years	(2,583)	372	58
Additions (reductions) related to lapse of applicable statute of limitations			(311)
Balance at the end of the year	$ 103	$ 2,827	$ 2,400