Note 3 - Income Taxes (Details) - Deferred Income Tax Liabilities (USD $)	Sep. 30, 2013	Sep. 30, 2012
Deferred Income Tax Liabilities [Abstract]
Accrued liabilities, including supplemental Compensation and vacation pay accrual	$ 1,083,000	$ 1,817,000
Impairment losses on investments	1,778,000	1,135,000
Bad debt reserves not yet deductible	78,000	80,000
Depreciation and amortization	356,000	49,000
Other	41,000	262,000
Total deferred tax assets	3,336,000	3,343,000
Unrealized gains on investments	(34,610,000)	(20,898,000)
Net deferred income taxes	$ (31,274,000)	$ (17,555,000)