Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Dec. 28, 2013
Disclosure Accrued Expenses [Abstract]
Accrued payroll and related expenses	$ 49,925	$ 56,544
Standard Product Warranty Accrual, Current	24,321	20,826
Advanced customer deposits	26,483	31,276
Accrued warranty	24,321	20,826
Accrued product liability and workers compensation	14,484	15,355
Product Liability Contingency, Loss Exposure in Excess of Accrual, High Estimate	12,620	2,480
Accrued customer rebates	22,784	26,947
Accrued agent commission	12,007	9,767
Contingent consideration	9,311	8,628
Accrued professional services	5,634	7,441
Sales and Excise Tax Payable, Current	6,433	5,762
Other accrued expenses	35,401	28,433
Accrued expenses	$ 219,403	$ 213,459