Quarterly report pursuant to Section 13 or 15(d)

Acquired Intangible Assets and Goodwill - Additional Information (Detail)

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Acquired Intangible Assets and Goodwill - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 25, 2021
Sep. 26, 2020
Sep. 25, 2021
Sep. 26, 2020
Dec. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]          
Intangible assets gross, foreign currency translation loss     $ 369,000   $ 997,000
Intangible Amortization $ 8,229,000 $ 6,892,000 $ 21,852,000 $ 20,287,000