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Note 4 - Debts and Commitments (Details Textual)	1 Months Ended	12 Months Ended
	Nov. 30, 2015 USD ($) ft² a	Sep. 30, 2017 USD ($) ft²	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($) ft²	Sep. 30, 2013 USD ($)
Payments to Acquire Property, Plant, and Equipment		$ 253,000	$ 3,779,000	$ 565,000
Operating Leases, Rent Expense		$ 742,000	$ 745,000	$ 1,171,000
Fair Value Inputs, Discount Rate		6.00%
Long Term Accrued Liabilities [Member]
Fair Value Inputs, Discount Rate		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					$ 25,000
Englewood, Colorado Office [member]
Area of Real Estate Property | ft²		9,800
Utah [Member] | 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	$ 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		1.75%
Real Estate Bank Loan Secured by Logan Office [Member]
Loans Payable to Bank	$ 2,260,000	$ 2,070,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.66%
Debt Instrument, Periodic Payment	$ 17,600

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