v3.5.0.1
Note 2 - Current Developments, Future Operations, Liquidity and Capital Resources (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
May 30, 2014
May 16, 2014
May 15, 2014
Feb. 04, 2014
Apr. 30, 2016
May 30, 2014
Apr. 30, 2016
Apr. 30, 2015
Jan. 31, 2016
Chicony Power Technology Company Ltd [Member] | Net of Attorneys Fees [Member]                  
Proceeds from Legal Settlements           $ 6,500,000      
Chicony Power Technology Company Ltd [Member] | Cost of Sales [Member]                  
Increase (Decrease) in Accounts Payable           (1,100,000)      
Chicony Power Technology Company Ltd [Member]                  
Litigation Settlement, Amount   $ 7,600,000 $ 7,600,000 $ 9,700,000          
Proceeds from Legal Settlements $ 3,600,000                
Professional Fees           $ 1,100,000      
Zheng Ge Electrical Company Ltd [Member] | Litigation Reserve [Member]                  
Liabilities, Current         $ 600,000   $ 600,000    
Pillsbury Winthrop Shaw Pittman L L P [Member] | Litigation Reserve [Member]                  
Liabilities, Current         100,000   100,000    
Pillsbury Winthrop Shaw Pittman L L P [Member]                  
Payments for Legal Settlements         0.40   400,000    
Increase (Decrease) in Accounts Payable             (504,000) $ (3,000)  
Working Capital         600,000   600,000    
Liabilities, Current         $ 1,034,000   $ 1,034,000   $ 1,570,000