Property and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,090	$ 1,366
Impairment charges, property and equipment	76	138
Capitalized Software
Property, Plant and Equipment [Line Items]
Impairment charges, property and equipment	$ 64	$ 7