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Note 8 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2014
Income Tax Expense (Benefit)	$ (4,240,000)	$ (55,000)	$ (4,550,000)	$ (240,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(1,261,000)	$ 152,000	(3,042,000)	$ 17,000
Liability for Uncertainty in Income Taxes, Noncurrent					$ 2,655,000
Unrecognized Tax Benefits, Accumulated Reduction	$ 743,000		743,000
Deferred Tax Liability, Reversal			$ 352,000
Effective Income Tax Rate Reconciliation, Percent			150.00%	(1412.00%)

X

- Definition

The amount of deferred tax liabilities that were reversed during the period.

+ References

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Amount of accumulated reduction in unrecognized tax benefits resulting from the recognition of deferred revenues and from the amortization of goodwill for tax purposes.

+ References

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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