Financial Assets and Liabilities that are Measured At Fair Value and are Categorized Using Fair Value Hierarchy (Detail) - Fair Value, Measurements, Recurring - USD ($)	Jun. 29, 2019	Dec. 29, 2018
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Assets	$ 3,238,000	$ 13,487,000
Financial Liabilities	25,402,000	4,125,000
Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial Liabilities	8,536,000	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	3,238,000	13,487,000
Financial Liabilities	25,402,000	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	$ 8,536,000	$ 3,566,000