Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid expenses	$ 422	$ 639
Income tax receivable	446	425
Other current assets	1,184	1,435
Total	$ 2,052	$ 2,499