Annual report pursuant to Section 13 and 15(d)

Note 19 - Series B, C, D Convertible Voting Perpetual Preferred Stock and Warrants (Details Textual)

v3.7.0.1
Note 19 - Series B, C, D Convertible Voting Perpetual Preferred Stock and Warrants (Details Textual)
 12 Months Ended
Jan. 19, 2016
May 14, 2015
shares
Feb. 23, 2015
USD ($)
$ / shares
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Jul. 08, 2013
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$ / shares
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Jul. 08, 2013
USD ($)
$ / shares
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Feb. 19, 2013
USD ($)
$ / shares
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Nov. 10, 2011
USD ($)
$ / shares
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Mar. 25, 2017
USD ($)
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Mar. 26, 2016
USD ($)
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Jan. 15, 2016
$ / shares
May 31, 2015
$ / shares
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Feb. 28, 2015
$ / shares
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Feb. 16, 2015
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Warrant Term 5 years                        
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                   $ 1.15      
Payments of Stock Issuance Costs               $ 278,000        
Alara Capital AVI II, LLC [Member]                          
Class of Warrant Or Right Exercised in Period   14,587                      
Shares Issued Upon Cashless Warrant Exercise | shares   7,216                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares                     1,017,405 1,017,405  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                     $ 1.43 $ 1.43  
New Warrant [Member]                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares       511,186 511,186                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 1.43 $ 1.43                
Series B Preferred Stock [Member]                          
Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants             $ 2,199,000            
Preferred Stock, Shares Issued | shares             9,997 9,997          
Sale of Stock, Price Per Share | $ / shares             $ 220            
Preferred Stock, Value, Issued               $ 2,000,000          
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs               $ 202,000          
Series C Preferred Stock [Member]                          
Preferred Stock, Shares Issued | shares           3,424.65   3,424.65          
Proceeds from Issuance of Preferred Stock and Preference Stock           $ 500,000              
Sale of Stock, Price Per Share | $ / shares           $ 146              
Preferred Stock, Value, Issued           $ 457,000              
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs           $ 43,000              
Series D Preferred Stock [Member]                          
Preferred Stock, Shares Issued | shares       5,111.86 5,111.86     5,111.86          
Proceeds from Issuance of Convertible Preferred Stock         $ 858,000                
Series D Preferred Stock [Member] | SPA [Member]                          
Payments of Stock Issuance Costs         41,000                
Debt Instrument, Convertible, Beneficial Conversion Feature       $ 238,000                  
Series D Preferred Stock [Member] | SPA [Member] | Unallocated [Member]                          
Proceeds from Issuance of Convertible Preferred Stock         817,000                
Series D Preferred Stock [Member] | SPA [Member] | Allocated [Member]                          
Proceeds from Issuance of Convertible Preferred Stock         498,000                
Proceeds from Issuance of Common Stock         $ 360,000                
Debt Instrument, Convertible, Conversion Price | $ / shares       $ 0.97 $ 0.97                
Series B, C, and D Preferred Stock [Member]                          
Preferred Stock, Shares Issued | shares               18,533.51 18,533.51        
Preferred Stock, Value, Issued               $ 2,911,000 $ 2,911,000        
Convertible Preferred Stock, Shares Issued upon Conversion | shares               100          
Series C and D Warrants [Member] | Alara Capital AVI II, LLC [Member]                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares     1,002,818                    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 1.43                    
Proceeds from Warrant Exercises     $ 1,434,000                    
Payments of Stock Issuance Costs     42,000                    
New Warrant [Member] | Alara Capital AVI II, LLC [Member]                          
Warrant Purchase Price     $ 137,000                    
Warrant Purchase Price Per Share | $ / shares     $ 0.125                    
Warrant Term     5 years                    
Number of Warrants Sold | shares     2                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares     194,437                   898,634
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 1.76                   $ 1.78
Additional Warrant [Member] | Alara Capital AVI II, LLC [Member]                          
Class of Warrant or Right, Outstanding | shares     14,587