Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.6
Note 6 - Stock-based Compensation (Detail) - Stock option compensation (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Sep. 30, 2012
Oct. 02, 2011
Cost of Sales [Member] | Three-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted   $ 11
Cost of Sales [Member] | Three-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 12 13
Cost of Sales [Member] | Three-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 11  
Cost of Sales [Member] | Three-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   6
Cost of Sales [Member] | Three-Month Period [Member]
   
Options Granted 23 30
Cost of Sales [Member] | Six-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted 14 25
Cost of Sales [Member] | Six-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 29 16
Cost of Sales [Member] | Six-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 13  
Cost of Sales [Member] | Six-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   15
Cost of Sales [Member] | Six-Month Period [Member]
   
Options Granted 56 56
Operating Expense [Member] | Three-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted   11
Operating Expense [Member] | Three-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 13 12
Operating Expense [Member] | Three-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 12  
Operating Expense [Member] | Three-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   14
Operating Expense [Member] | Three-Month Period [Member]
   
Options Granted 25 37
Operating Expense [Member] | Six-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted 13 26
Operating Expense [Member] | Six-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 29 15
Operating Expense [Member] | Six-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 15  
Operating Expense [Member] | Six-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   33
Operating Expense [Member] | Six-Month Period [Member]
   
Options Granted 57 74
Three-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted   22
Three-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 25 25
Three-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 23  
Three-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   20
Three-Month Period [Member]
   
Options Granted 48 67
Six-Month Period [Member] | Fiscal Year 2011 [Member]
   
Options Granted 27 51
Six-Month Period [Member] | Fiscal Year 2012 [Member]
   
Options Granted 58 31
Six-Month Period [Member] | Fiscal Year 2013 [Member]
   
Options Granted 28  
Six-Month Period [Member] | Fiscal Year 2010 [Member]
   
Options Granted   48
Six-Month Period [Member]
   
Options Granted $ 113 $ 130