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Note 4 - Debts and Commitments (Details Textual) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2015 USD ($) ft² a | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) ft² | Sep. 30, 2016 USD ($) | Sep. 30, 2013 USD ($) | Sep. 30, 2014 ft²
Payments to Acquire Property, Plant, and Equipment, Total |  | $ 212,000 | $ 253,000 | $ 3,779,000 |  |
Operating Leases, Rent Expense, Net, Total |  | $ 996,000 | $ 742,000 | $ 745,000 |  |
Measurement Input, Discount Rate [Member] |  |  |  |  |  |
Incentive Plan Future Commitment, Measurement Input |  | 6.00% |  |  |  |
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 [Member] | Land [Member] |  |  |  |  |  |
Area of Land | a | 3.6 |  |  |  |  |
Utah [Member] | 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 |  | 2.50% |  |  |  |
Real Estate Bank Loan Secured by Logan Office [Member] |  |  |  |  |  |
Loans Payable to Bank, Total | $ 2,260,000 | $ 1,960,000 |  |  |  |
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate | 4.66% |  |  |  |  |
Debt Instrument, Periodic Payment, Total | $ 17,600 |  |  |  |  |

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