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Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 28, 2019 | Dec. 29, 2018
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Accounting Policies [Abstract] |  |
Accrued payroll and related expenses | $ 81,541 | $ 74,952
Accrued warranty | 66,374 | 59,451
Contract liabilities | 74,511 | 57,913
Accrued customer rebates | 51,709 | 45,740
Accrued sales and other tax | 19,862 | 19,452
Accrued professional fees | 13,368 | 17,313
Accrued product liability and workers compensation | 15,164 | 16,284
Accrued agent commission | 13,816 | 11,969
Accrued short-term leases | 21,827 | 0
Other accrued expenses | 58,378 | 64,372
Accrued expenses | $ 416,550 | $ 367,446

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