Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013
Disclosure Accrued Expenses [Abstract]
Accrued payroll and related expenses	$ 44,630	$ 56,544
Standard Product Warranty Accrual, Current	25,623	20,826
Advanced customer deposits	26,142	31,276
Accrued warranty	25,623	20,826
Accrued product liability and workers compensation	14,978	15,355
Product Liability Contingency, Loss Exposure in Excess of Accrual, High Estimate	13,007	2,480
Accrued customer rebates	18,254	26,947
Accrued agent commission	12,242	9,767
Contingent consideration	10,174	8,628
Accrued professional services	6,741	7,441
Sales and Excise Tax Payable, Current	6,404	5,762
Other accrued expenses	24,370	28,433
Accrued expenses	$ 202,565	$ 213,459