Annual report pursuant to Section 13 and 15(d)

Note 7 - Accounts Receivable Line of Credit (Details Textual)

v3.7.0.1
Note 7 - Accounts Receivable Line of Credit (Details Textual) - USD ($)
Jun. 01, 2015
Mar. 25, 2017
Mar. 26, 2016
Line of Credit, Current   $ 582,000 $ 800,000
Line of Credit Facility, Remaining Borrowing Capacity   $ 234,000  
New Amended Credit Facility 2 [Member]      
Long-term Line of Credit $ 2,500,000    
Advance Rate 80.00%    
Debt Instrument, Variable Interest Rate   3.75%  
Debt Instrument, Interest Rate, Effective Percentage   5.25%  
Line of Credit Facility, Commitment Fee Amount $ 12,500    
Asset Coverage Ratio 135.00%    
Accounts Receivable, Aging from Invoice Date 90 days    
New Amended Credit Facility 2 [Member] | Prime Rate [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.50%    
New Amended Credit Facility 2 [Member] | Borrowing Base for International Services Sub-Limit [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 2,500,000    
New Amended Credit Facility 2 [Member] | Formula-Basis Sub-Limit [Member]      
Line of Credit Facility, Maximum Borrowing Capacity 2,000,000    
New Amended Credit Facility 2 [Member] | Non-Formula Basis Sub-Limit [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 500,000