Financial Assets and Liabilities that are Measured At Fair Value and are Categorized Using Fair Value Hierarchy (Detail) - Fair Value, Measurements, Recurring - USD ($)	Mar. 30, 2019	Dec. 29, 2018
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	$ 8,160,000	$ 13,487,000
Financial Liabilities	11,353,000	4,125,000
Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	3,585,000	3,566,000
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	0	0
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] | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	8,160,000	13,487,000
Financial Liabilities	11,353,000	4,125,000
Fair Value, Inputs, Level 2 [Member] | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets		0
Financial Liabilities	0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	0	0
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	$ 3,585,000	$ 3,566,000