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Note 1 - Organization and Basis of Presentation (Details Textual) - USD ($)
9 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
Apr. 30, 2019
Aug. 30, 2016
Cash and Cash Equivalents, at Carrying Value, Total $ 513,000   $ 2,589,000    
Working Capital (Deficit) 9,857,000   11,443,000    
Line of Credit, Current 1,550,000   0    
Lines of Credit, Related Party, Current 500,000   0    
Long-term Debt and Capital Lease Obligations, Current and Noncurrent 3,523,000        
Proceeds from Lines of Credit, Related Parties 500,000 $ 0      
Unsecured Subordinated Loan From Skywords [Member]          
Debt Instrument, Face Amount 1,000,000   1,000,000 $ 1,500,000  
First Foundation Bank [Member]          
Proceeds from Lines of Credit, Total 1,550,000        
First Foundation Bank [Member] | Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity     2,000,000   $ 2,000,000
Line of Credit, Current 1,550,000   0    
Related Party [Member] | Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity 1,000,000        
Lines of Credit, Related Party, Current 500,000   $ 0    
Proceeds from Lines of Credit, Related Parties $ 500,000