Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Stock-based Compensation - Stock Option Compensation (Details)

v3.5.0.2
Note 5 - Stock-based Compensation - Stock Option Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 02, 2016
Sep. 27, 2015
Oct. 02, 2016
Sep. 27, 2015
Fiscal Year 2015 [Member] | Employee Stock Option [Member] | Cost of Sales [Member]        
Allocated Share Based Compensation Expense $ 12,000 $ 14,000 $ 28,000
Fiscal Year 2015 [Member] | Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]        
Allocated Share Based Compensation Expense 11,000 12,000 24,000
Fiscal Year 2015 [Member] | Employee Stock Option [Member]        
Allocated Share Based Compensation Expense 23,000 26,000 52,000
Fiscal Year 2014 [Member] | Employee Stock Option [Member] | Cost of Sales [Member]        
Allocated Share Based Compensation Expense     7,000
Fiscal Year 2014 [Member] | Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]        
Allocated Share Based Compensation Expense     7,000
Fiscal Year 2014 [Member] | Employee Stock Option [Member]        
Allocated Share Based Compensation Expense     14,000
Fiscal Year 2016 [Member] | Employee Stock Option [Member] | Cost of Sales [Member]        
Allocated Share Based Compensation Expense 5,000 5,000 12,000 6,000
Fiscal Year 2016 [Member] | Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]        
Allocated Share Based Compensation Expense 4,000 4,000 10,000 5,000
Fiscal Year 2016 [Member] | Employee Stock Option [Member]        
Allocated Share Based Compensation Expense 9,000 9,000 22,000 11,000
Fiscal Year 2017 [Member] | Employee Stock Option [Member] | Cost of Sales [Member]        
Allocated Share Based Compensation Expense 8,000 10,000
Fiscal Year 2017 [Member] | Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]        
Allocated Share Based Compensation Expense 6,000 7,000
Fiscal Year 2017 [Member] | Employee Stock Option [Member]        
Allocated Share Based Compensation Expense 14,000 17,000
Employee Stock Option [Member] | Cost of Sales [Member]        
Allocated Share Based Compensation Expense 13,000 17,000 36,000 41,000
Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]        
Allocated Share Based Compensation Expense 10,000 15,000 29,000 36,000
Employee Stock Option [Member]        
Allocated Share Based Compensation Expense 23,000 32,000 65,000 77,000
Allocated Share Based Compensation Expense $ 146,000 $ 223,000 $ 307,000 $ 479,000