Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity and Going Concern (Details Textual)

v3.8.0.1
Note 2 - Liquidity and Going Concern (Details Textual) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
May 11, 2018
Mar. 31, 2018
May 11, 2018
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Mar. 22, 2018
Jun. 30, 2017
Retained Earnings (Accumulated Deficit), Ending Balance   $ (24,736,000)   $ (24,736,000)   $ (24,736,000)     $ (19,697,000)
Net Income (Loss) Attributable to Parent, Total       (1,753,000) $ (1,162,000) (5,039,000) $ (3,377,000)    
Estimated Financing Proceeds to Fund Current and Planned Operations   5,000,000   5,000,000   5,000,000      
Proceeds from Issuance of Private Placement           200,000 $ 1,075,000    
Unrestricted Line of Credit [Member] | Esenjay Investments, LLC [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity   10,000,000   10,000,000   10,000,000      
Line of Credit Facility, Remaining Borrowing Capacity   2,025,000   2,025,000   2,025,000      
Inventory Line of Credit [Member] | Esenjay Investments, LLC [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity   5,000,000   5,000,000   5,000,000   $ 5,000,000  
Line of Credit Facility, Remaining Borrowing Capacity   3,245,000   $ 3,245,000   $ 3,245,000      
Subsequent Event [Member] | Unrestricted Line of Credit [Member] | Esenjay Investments, LLC [Member]                  
Line of Credit Facility, Remaining Borrowing Capacity $ 2,025,000   $ 2,025,000            
Subsequent Event [Member] | Inventory Line of Credit [Member] | Esenjay Investments, LLC [Member]                  
Line of Credit Facility, Remaining Borrowing Capacity 3,245,000   3,245,000            
Private Placement 2018 [Member]                  
Proceeds From Issuance of Common Stock, Authorized Amount   4,000,000              
Proceeds from Issuance of Private Placement   $ 200,000              
Private Placement 2018 [Member] | Subsequent Event [Member]                  
Proceeds from Issuance of Private Placement $ 600,000   $ 800,000