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Note 1 - Organization and Basis of Presentation (Details Textual)
Jun. 30, 2019
USD ($)
Apr. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Aug. 30, 2018
Mar. 31, 2017
Aug. 30, 2016
USD ($)
Cash and Cash Equivalents, at Carrying Value, Ending Balance $ 1,055,000   $ 840,000      
Working Capital (Deficit) 6,800,000   5,100,000      
Line of Credit Facility, Maximum Borrowing Capacity           $ 2,000,000
Line of Credit, Current 2,000,000   $ 2,000,000      
First Foundation Bank [Member]            
Long-term Debt and Capital Lease Obligations, Current and Noncurrent 5,700,000          
Debt Service Coverage Ratio     (0.66)      
Debt Covenant, Minimum Debt Service Coverage Ratio     1.25      
First Foundation Bank [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity           $ 2,000,000
Line of Credit, Current $ 2,000,000   $ 2,000,000      
Current Ratio     1.49      
Debt Covenant, Minimum Current Ratio     1.5 1.5 2.1  
Skywords Note [Member] | Unsecured Subordinated Loan [Member]            
Debt Instrument, Face Amount   $ 1,500,000