Receivables and Prepaid Expenses - Schedule of Receivables and Prepaid Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Receivables And Prepaid Expenses [Abstract]
Advances and receivables from suppliers	$ 5,829	$ 7,323
Government authorities	1,867	1,955
Prepaid expenses	2,238	1,290
Others	150	231
Receivables and prepaid expenses	$ 10,084	$ 10,799