Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies and Nature of Operations - Additional Information (Detail)

v3.7.0.1
Summary of Significant Accounting Policies and Nature of Operations - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Oct. 01, 2016
USD ($)
Jul. 02, 2016
USD ($)
Apr. 02, 2016
USD ($)
Jan. 02, 2016
USD ($)
Oct. 03, 2015
USD ($)
Jul. 04, 2015
USD ($)
Apr. 04, 2015
USD ($)
Dec. 31, 2016
USD ($)
supplier
segment
Jan. 02, 2016
USD ($)
Jan. 03, 2015
USD ($)
Property, Plant and Equipment [Line Items]                      
Percentage increase (decrease) in revenues                 4.30% 2.70%  
Net (loss) income $ (1,353,000) $ (102,000) $ 934,000 $ 1,252,000 $ (454,000) $ 8,000 $ (775,000) $ (60,000) $ 731,000 $ (1,281,000) $ (6,879,000)
Other-than-temporary impairment charges on investments                 $ 0    
Number of suppliers products are available from (more than) | supplier                 1    
Inventory in-transit 9,767,000       12,241,000       $ 9,767,000 12,241,000  
Capitalized website and software development costs                 83,000 146,000 196,000
Impairment loss on intangible assets 1,130,000               $ 1,130,000 0 0
Impairment loss on property and equipment                   $ 0 $ 0
Catalog amortization period                 9 months    
Advertising revenue as a percentage of total revenue                 1.00% 1.00% 1.00%
Credits for returned products                 $ 23,876,000 $ 23,543,000 $ 24,903,000
Warranty, coverage period                 30 days    
Warranty, unlimited product replacement, coverage period                 5 years    
Warranty, one-time product replacement, coverage period                 5 years    
Warranty, one-time product replacement, coverage period 1                 3 years    
Advertising costs                 $ 22,616,000 20,251,000 18,485,000
Unrecognized tax benefits, interest or penalties 0               $ 0    
Number of reportable segments | segment                 2    
Number of operating segments | segment                 2    
Minimum                      
Property, Plant and Equipment [Line Items]                      
Standard product warranty, recognition period                 1 year    
Maximum                      
Property, Plant and Equipment [Line Items]                      
Standard product warranty, recognition period                 5 years    
Website and Software Development                      
Property, Plant and Equipment [Line Items]                      
Capitalized website and software development costs                 $ 4,977,000 5,664,000  
Capitalized website and software development cost amount 22,366,000       22,745,000       22,366,000 22,745,000  
Capitalized website and software development costs accumulated amortization and impairment amount 18,520,000       17,669,000       $ 18,520,000 17,669,000  
Website and Software Development | Minimum                      
Property, Plant and Equipment [Line Items]                      
Amortization on a straight-line basis, period                 2 years    
Website and Software Development | Maximum                      
Property, Plant and Equipment [Line Items]                      
Amortization on a straight-line basis, period                 3 years    
Other Current Assets                      
Property, Plant and Equipment [Line Items]                      
Deferred catalog expenses $ 160,000       $ 256,000       $ 160,000 256,000  
Cost of Sales                      
Property, Plant and Equipment [Line Items]                      
Freight and shipping expenses                 $ 41,937,000 $ 41,250,000 $ 40,428,000
Employee Stock Option | Minimum                      
Property, Plant and Equipment [Line Items]                      
Stock options vesting period                 3 years    
Employee Stock Option | Maximum                      
Property, Plant and Equipment [Line Items]                      
Stock options vesting period                 4 years    
Accumulated Deficit                      
Property, Plant and Equipment [Line Items]                      
Net (loss) income                 $ 731,000