Business Description and Summary of Significant Accounting Policies - Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance	$ 131	$ 334
Gain recognized in earnings	(121)	(203)
Balance	$ 10	$ 131