Financial Assets and Liabilities that are Measured At Fair Value and are Categorized Using Fair Value Hierarchy (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015
Pension Plan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	$ 28,962	$ 28,881
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	1,123	810
Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	12,797	14,558
Fair Value, Inputs, Level 1 [Member] | Pension Plan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	27,769	27,647
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	0	0
Fair Value, Inputs, Level 1 [Member] | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Pension Plan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	1,193	1,234
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	1,123	810
Fair Value, Inputs, Level 2 [Member] | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Pension Plan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	$ 12,797	$ 14,558