Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Detail)

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Summary of Significant Accounting Policies - Narrative (Detail) - USD ($)
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 19,973,000 $ 28,234,000  
Accounts receivable, allowances 1,891,000 846,000  
Proceeds from sale of trade receivables 292,432,000 215,833,000  
Loss from sale of trade receivables 2,923,000 2,233,000  
Goodwill impairment charge 0 0 $ 0
Intangible assets impairment charge 0 0 0
Impairment of long lived assets 7,887,000 837,000 1,569,000
Loss limit covered under self-insurance $ 250,000    
Percentage of deferred matching contribution amount 50.00%    
Percent of employees' gross pay, matching contribution 6.00%    
Defined contribution plan costs $ 2,725,000 2,567,000 2,222,000
Selling, general and administrative expenses 382,131,000 320,543,000 274,044,000
Research and development costs $ 2,075,000 2,181,000 2,216,000
Dividend yield 0.00%    
Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life, property plant and equipment 2 years    
Estimated useful life, intangible assets 5 years    
Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life, property plant and equipment 25 years    
Estimated useful life, intangible assets 20 years    
Non-United States based operations      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 9,301,000 6,943,000  
Group health insurance claims      
Property, Plant and Equipment [Line Items]      
Loss limit covered under self-insurance $ 250,000    
Deferred Profit Sharing Plan      
Property, Plant and Equipment [Line Items]      
Percentage of deferred matching contribution amount 100.00%    
Percent of employees' gross pay, matching contribution 2.00%    
Maximum annual contribution per employee 8.00%    
Shipping and handling      
Property, Plant and Equipment [Line Items]      
Selling, general and administrative expenses $ 47,713,000 $ 42,458,000 $ 39,205,000
United States      
Property, Plant and Equipment [Line Items]      
Geographic Areas, Long-Lived Assets, Percent 95.00%