Property and Equipment (Additional Disclosures) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation expense, inclusive of expense captured in cost of revenue	$ 13,200,000	$ 13,100,000	$ 11,200,000
Impairment related to property and equipment	$ 2,300,000	$ 0	$ 0