Property and Equipment, Net - Depreciation Expense Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Depreciation Expense [Line Items]
Depreciation expense	$ 22,570	$ 21,380	$ 18,810
Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	22,570	21,380	18,810
Cost of Sales [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	19,730	18,450	16,210
Selling, General and Administrative Expenses [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 2,840	$ 2,930	$ 2,600