Income Taxes Deferred Income Taxes (Details) (USD $)	Dec. 29, 2012	Dec. 31, 2011
Deferred Income Taxes and Other Assets [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	$ 1,448,000	$ 1,175,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty And Returns Reserves	3,040,000	2,492,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent And Lease Incentives Current	867,000	862,000
Deferred Tax Assets, Tax Deferred Expense, Other Current	246,000	107,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Property And Equipment	0	1,119,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	8,061,000	6,380,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent And Lease Incentives Long-term	3,237,000	2,411,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves	563,000	1,047,000
Deferred Tax Assets Net Operating Loss And Capital Loss Carryforwards	1,339,000	2,090,000
Deferred Tax Assets Tax Deferred Expense Other Long Term	459,000	417,000
Deferred Tax Assets, Gross	19,260,000	18,100,000
Deferred Tax Assets, Valuation Allowance	(647,000)	(693,000)
Deferred Tax Assets, Net of Valuation Allowance	18,613,000	17,407,000
Deferred Tax Liabilities, Property, Plant and Equipment	4,701,000	0
Deferred Tax Liabilities, Gross	4,701,000	0
Deferred Tax Assets, Net	13,912,000	17,407,000
Net Operating Loss Carryforwards expiring between 2013 and 2032	$ 15,800,000.000000000