Summary of Significant Accounting Policies - Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Accounting Policies [Abstract]
Accrued payroll and related expenses	$ 42,960	$ 41,434
Advanced customer deposits	37,392	33,246
Accrued customer rebates	23,901	23,136
Accrued warranty	17,593	13,842
Accrued product liability and workers compensation	13,290	10,771
Accrued agent commission	9,531	8,668
Accrued professional services	8,346	7,497
Other accrued expenses	17,919	31,798
Accrued expenses	$ 170,932	$ 170,392