Summary of Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair value, measurements, recurring - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	$ 10,228	$ 12,367
Liabilities	6,512	7,216
Company-owned life insurance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	10,228	12,367
Deferred compensation liabilities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Liabilities	6,512	7,216
Significant other observable inputs (Level 2)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	10,228	12,367
Liabilities	6,512	7,216
Significant other observable inputs (Level 2) | Company-owned life insurance
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	10,228	12,367
Significant other observable inputs (Level 2) | Deferred compensation liabilities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Liabilities	$ 6,512	$ 7,216