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Stock-Based Compensation - Stock Based Compensation Expense (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Stock-based compensation expense    
Stock-based compensation, before income taxes $ 9,674us-gaap_AllocatedShareBasedCompensationExpense $ 6,659us-gaap_AllocatedShareBasedCompensationExpense
Provision for income taxes (3,385)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense (2,364)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Stock-based compensation, net of income tax 6,289us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax 4,295us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Cost of revenue    
Stock-based compensation expense    
Stock-based compensation, before income taxes 1,501us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
1,353us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
Selling, general and administrative    
Stock-based compensation expense    
Stock-based compensation, before income taxes $ 8,173us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
$ 5,306us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember