Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Schedule of Rent Expense) (Details)

v2.4.1.9
Commitments and Contingencies (Schedule of Rent Expense) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]      
Rent expense $ 64,335us-gaap_LeaseAndRentalExpense $ 55,564us-gaap_LeaseAndRentalExpense $ 53,381us-gaap_LeaseAndRentalExpense
Selling, General and Administrative Expense [Member]      
Property, Plant and Equipment [Line Items]      
Rent expense 62,704us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember 		53,972us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember 		51,853us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
Cost of Sales [Member]      
Property, Plant and Equipment [Line Items]      
Rent expense $ 1,631us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember 		$ 1,592us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember 		$ 1,528us-gaap_LeaseAndRentalExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember