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Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Jan. 01, 2011
Schedule of Accrued Liabilities [Line Items]    
Accrued payroll and related expenses $ 41,434 $ 32,625
Advanced customer deposits 33,246 13,357
Accrued customer rebates 23,136 18,086
Accrued warranty 13,842 14,468
Accrued product liability and workers compensation 10,771 9,711
Accrued agent commission 8,668 7,824
Accrued professional services 7,497 5,944
Other accrued expenses 31,798 23,795
Accrued expenses $ 170,392 $ 125,810