Annual report pursuant to Section 13 and 15(d)

Note 8 - Term Loan, Revolving Line of Credit and Warrants (Details Textual)

v3.7.0.1
Note 8 - Term Loan, Revolving Line of Credit and Warrants (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Apr. 28, 2017
Apr. 27, 2017
Jun. 03, 2015
Jun. 16, 2014
Mar. 14, 2014
Mar. 14, 2014
Mar. 13, 2014
Jul. 31, 2015
Mar. 25, 2017
Mar. 26, 2016
Jan. 15, 2016
Amortization of Debt Discount (Premium)                 $ 22,000 $ 165,000  
Repayments of Lines of Credit                 218,000 1,000,000  
Line of Credit Facility, Remaining Borrowing Capacity                 234,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights                     $ 1.15
Fair Value Adjustment of Warrants                 (131,000) 12,000  
Partners For Growth IV, L.P. [Member] | Revolving Credit Facility [Member]                      
Repayments of Lines of Credit               $ 500,000      
Line of Credit Facility, Maximum Borrowing Capacity       $ 500,000              
Bridge Bank [Member]                      
Line of Credit Facility, Maximum Borrowing Capacity         $ 2,500,000 $ 2,500,000          
PFG Loan [Member]                      
Debt Instrument, Interest Rate, Stated Percentage         9.75% 9.75%          
Debt Instrument, Term         2 years 180 days   3 years        
Debt Instrument, Face Amount             $ 2,000,000        
Proceeds from Issuance of Debt         $ 1,000,000 $ 1,000,000          
Derivative Liability, Fair Value, Gross Liability                 222,000 353,000  
PFG Loan [Member] | Subsequent Event [Member]                      
Debt Instrument, Interest Rate, Stated Percentage   16.00%                  
Debt Instrument, Term   2 years                  
Debt Instrument, Face Amount   $ 1,500,000                  
Proceeds from Issuance of Long-term Debt $ 1,500,000 $ 1,500,000                  
PFG Loan [Member] | Common Stock [Member]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights         300,000 300,000          
Class of Warrant or Right, Term         5 years            
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 1.42 $ 1.42          
PFG Loan [Member] | Prepaid Expenses and Other Current Assets [Member]                      
Payments of Debt Issuance Costs       $ 15,000 $ 30,000            
PFG Loan [Member] | Achievement of Performance Milestones First Half of Fiscal 2015 [Member]                      
Line of Credit Facility, Remaining Borrowing Capacity         $ 1,000,000 $ 1,000,000          
PFG Loan [Member] | Under First Draw [Member]                      
Long-term Debt, Gross     $ 822,000                
Debt Instrument, Unamortized Discount     178,000                
PFG Loan [Member] | Under First Draw [Member] | Common Stock [Member]                      
Class of Warrant or Right, Outstanding         180,000 180,000          
Class of Warrant or Right, Exchanged for Cash, Amount         $ 150,000 $ 150,000          
PFG Loan [Member] | Amendment [Member]                      
Long-term Debt, Gross     365,000                
Debt Instrument, Unamortized Discount     $ 135,000                
PFG Loan [Member] | Amendment [Member] | Common Stock [Member]                      
Class of Warrant or Right, Outstanding       80,000              
Class of Warrant or Right, Exchanged for Cash, Amount         $ 67,000 $ 67,000          
PFG Loan [Member] | Second Amendment [Member] | Common Stock [Member]                      
Class of Warrant or Right, Cancelled During Period     40,000                
PFG Loan [Member] | Partners For Growth IV, L.P. [Member]                      
Line of Credit Facility, Maximum Borrowing Capacity       $ 500,000              
PFG Loan [Member] | Partners For Growth IV, L.P. [Member] | Revolving Credit Facility [Member]                      
Debt Instrument, Interest Rate, Stated Percentage       12.50%              
Debt Instrument, Term       2 years 270 days              
Line of Credit Facility, Periodic Payment, Principal     $ 10,000                
Long-term Line of Credit     500,000                
Repayments of Lines of Credit     150,000             500,000  
Warrant Debt [Member] | Under First Draw [Member]                      
Long-term Debt, Gross     178,000                
Derivative Liability, Fair Value, Gross Liability                 133,000 212,000  
Warrant Debt [Member] | Amendment [Member]                      
Long-term Debt, Gross     $ 135,000                
Derivative Liability, Fair Value, Gross Liability                 $ 89,000 $ 141,000