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Property and Equipment, Net - Depreciation Expense Table (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Depreciation Expense [Line Items]
Depreciation expense	$ 7,620us-gaap_Depreciation	$ 8,030us-gaap_Depreciation
Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	7,620	8,020
Cost of Sales [Member] \| Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	6,510	6,740
Selling, General and Administrative Expenses [Member] \| Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 1,110	$ 1,280