Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) (USD $)	3 Months Ended	6 Months Ended
	May 26, 2012	May 26, 2012
Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 475,000	$ 711,000
Gain (Loss) on Contract Termination	(131,000)	(359,000)
Bassett [Member] | Demolition of Closed Facility [Member]
Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) [Line Items]
Restructuring, Settlement and Impairment Provisions	89,000	203,000
Mt. Airy [Member] | Write-down of Closed Facility [Member]
Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) [Line Items]
Restructuring, Settlement and Impairment Provisions	385,000
Richmond [Member] | Write-off of Leasehold Improvements [Member]
Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) [Line Items]
Restructuring, Settlement and Impairment Provisions	0	123,000
Richmond [Member] | Lease Exit [Member]
Note 11 - Restructuring, Asset Impairment, and Other Charges (Details) [Line Items]
Gain (Loss) on Contract Termination		$ (228,000)