Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangibles, Net - Additional Information (Detail)

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Goodwill and Other Intangibles, Net - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Apr. 03, 2021
Mar. 28, 2020
Oct. 03, 2020
Finite and Indefinite Lived Intangible Assets [Line Items]          
Amortization expense $ 500,000 $ 500,000 $ 1,000,000.0 $ 1,100,000  
Impairment of goodwill or other intangible assets 0 0 0 0  
Intangible assets gross amount capitalized on condensed consolidated balance sheets 57,423,000 54,123,000 57,423,000 54,123,000 $ 54,123,000
Intangible assets net carrying value 29,856,000 29,088,000 29,856,000 29,088,000 27,602,000
Mailing Lists          
Finite and Indefinite Lived Intangible Assets [Line Items]          
Intangible assets gross amount capitalized on condensed consolidated balance sheets 1,600,000 1,600,000 1,600,000 1,600,000 1,600,000
Intangible assets net carrying value $ 300,000 $ 300,000 $ 300,000 $ 300,000 $ 300,000