Property and Equipment (Additional Disclosures) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense, inclusive of expense captured in cost of revenue	$ 7,600,000	$ 5,800,000	$ 4,700,000
Impairment related to property and equipment	$ 0	$ 0	$ 0