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Note 9 - Debt and Commitments (Details Textual)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2015
USD ($)
ft²
a
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Sep. 30, 2013
USD ($)
Sep. 30, 2017
ft²
Sep. 30, 2014
ft²
Payments to Acquire Property, Plant, and Equipment, Total   $ 41,000 $ 84,000 $ 75,000      
Loans Payable to Bank, Total   $ 1,900,000   1,900,000        
Operating Leases, Rent Expense, Net, Total       515,000 $ 487,000      
San Francisco Office [Member]                
Area of Real Estate Property | ft²               6,200
Lessee, Operating Lease, Renewal Term               5 years
Operating Lease, Monthly Rent       28,000        
Englewood, Colorado Office [member]                
Area of Real Estate Property | ft²             9,800  
Operating Lease, Monthly Rent       $ 21,000        
UTAH | Building [Member]                
Area of Real Estate Property | ft² 30,700              
UTAH | Land [Member]                
Area of Land | a 3.6              
UTAH | Land and Building [Member]                
Payments to Acquire Property, Plant, and Equipment, Total $ 1,240,000              
Margin Account [Member]                
Proceeds from Issuance of Debt           $ 29,500,000    
Margin Account [Member] | Fed Funds Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate           0.50%    
Debt Instrument, Interest Rate, Effective Percentage   3.00%   3.00%        
Real Estate Bank Loan Secured by Logan Office [Member]                
Loans Payable to Bank, Total $ 2,260,000              
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 4.66%              
Debt Instrument, Periodic Payment, Total $ 17,600