Note 13 - Income Taxes (Detail) - Deferred income tax assets (liabilities) (USD $) In Thousands, unless otherwise specified	Jul. 28, 2012	Jul. 30, 2011
Deferred income tax assets:
Federal net operating loss carry forward	$ 11,096	$ 11,207
State tax credits and operating loss carry forwards	1,495	2,097
Reserve for inventory obsolescence	467	532
Allowances and reserves not currently deductible	35	184
Stock-based compensation	1,097	920
Gross deferred income tax assets	14,190	14,940
Deferred income tax liabilities:
Fixed assets	(91)	(253)
Gross deferred income tax liabilities	(92)	(253)
Less: valuation allowance	(14,557)	(15,267)
Net deferred income tax (liability) asset	(458)	(580)
Deferred income tax liabilities - non-current	$ (458)	$ (580)