Income Taxes Deferred Income Taxes (Details) (USD $)	Dec. 28, 2013	Dec. 29, 2012
Income Tax Disclosure [Abstract]
Warranty and returns liabilities	$ 4,376,000	$ 3,040,000
Compensation and benefits	1,379,000	1,448,000
Deferred rent and lease incentives	857,000	867,000
Other	539,000	246,000
Stock-based compensation	5,944,000	8,061,000
Deferred rent and lease incentives	4,524,000	3,237,000
Warranty liability	605,000	563,000
Net operating loss and capital loss carryforwards	827,000	1,339,000
Other	1,111,000	459,000
Total gross deferred tax assets	20,162,000	19,260,000
Valuation allowance	(587,000)	(647,000)
Total deferred tax assets after valuation allowance	19,575,000	18,613,000
Property and equipment	7,696,000	4,701,000
Total gross deferred tax liabilities	7,696,000	4,701,000
Net deferred tax assets	11,879,000	13,912,000
State Operating Loss Carryforwards, Expiring between 2014 and 2033	$ 5,000,000