Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Accrued taxes, including liability for unrecognized tax benefit, (see also Note 11)	$ 2,227	$ 2,512
Other accrued liabilities	599	394
Total other accrued liabilities	$ 2,826	$ 2,906