XML 15 R48.htm IDEA: XBRL DOCUMENT v2.4.0.8
Long-Term Debt and Lines of Credit - Long-Term Debt - Narrative (Detail) (USD $)
 3 Months Ended
Aug. 03, 2014
Apr. 27, 2014
Jul. 28, 2013
Aug. 03, 2014
Unsecured senior term notes [Member]
Aug. 11, 2008
Unsecured senior term notes [Member]
Debt Instrument [Line Items]          
Issuance of unsecured term notes         $ 11,000,000
Fixed interest rate         8.01%
Term of the note agreement       7 years  
Required amount of principal payment installments       2,200,000  
Date of first required principal payment       Aug. 11, 2011  
Required debt payment frequency       Annual  
Average term period for remaining principal payments, in years       1 year  
Maturity date       Aug. 11, 2015  
Principal payment requirements of long-term debt for the first year 2,200,000        
Principal payment requirements of long-term debt for the second year 2,200,000        
Long-term debt 4,400,000 4,400,000 6,600,000    
Long-term debt, fair value $ 4,600,000 $ 4,600,000 $ 7,000,000