Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock-based Compensation (Detail) - Stock grant compensation

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Note 6 - Stock-based Compensation (Detail) - Stock grant compensation (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Sep. 30, 2012
Oct. 02, 2011
Three-Month Period [Member] | Fiscal Year 2011 [Member]
    
Stock granted compensation - employees $ 52 $ 52
Stock granted compensation - non-employee directors 4 15
Stock granted compensation - total 56 67
Three-Month Period [Member] | Fiscal Year 2012 [Member]
    
Stock granted compensation - non-employee directors 17 11
Stock granted compensation - total 17 11
Three-Month Period [Member] | Fiscal Year 2013 [Member]
    
Stock granted compensation - non-employee directors 20  
Stock granted compensation - total 20  
Three-Month Period [Member] | Fiscal Year 2010 [Member]
    
Stock granted compensation - non-employee directors   5
Stock granted compensation - total   5
Three-Month Period [Member]
    
Stock granted compensation - employees 52 52
Stock granted compensation - non-employee directors 41 31
Stock granted compensation - total 93 83
Six-Month Period [Member] | Fiscal Year 2011 [Member]
    
Stock granted compensation - employees 104 104
Stock granted compensation - non-employee directors 18 31
Stock granted compensation - total 122 135
Six-Month Period [Member] | Fiscal Year 2012 [Member]
    
Stock granted compensation - non-employee directors 33 11
Stock granted compensation - total 33 11
Six-Month Period [Member] | Fiscal Year 2013 [Member]
    
Stock granted compensation - non-employee directors 20  
Stock granted compensation - total 20  
Six-Month Period [Member] | Fiscal Year 2010 [Member]
    
Stock granted compensation - non-employee directors   11
Stock granted compensation - total   11
Six-Month Period [Member]
    
Stock granted compensation - employees 104 104
Stock granted compensation - non-employee directors 71 53
Stock granted compensation - total $ 175 $ 157