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Note 3 - Income Taxes (Details Textual) - USD ($)	1 Months Ended	3 Months Ended								12 Months Ended			24 Months Ended
	Mar. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016
Income Tax Expense (Benefit)		$ (1,135,000)	$ (1,465,000)	$ (4,240,000)	$ (310,000)	$ (1,410,000)	$ (285,000)	$ (55,000)	$ (185,000)	$ (7,150,000)	$ (1,935,000)	$ (1,120,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest		$ (2,210,000)	$ (2,816,000)	(1,261,000)	$ (1,781,000)	(2,372,000)	$ (623,000)	$ 152,000	$ (135,000)	$ (8,068,000)	$ (2,978,000)	$ (310,000)
Effective Income Tax Rate Reconciliation, Percent										88.70%	65.00%	360.90%
Liability for Uncertainty in Income Taxes, Noncurrent						$ 2,723,000					$ 2,723,000	$ 2,991,000	$ 2,723,000
Unrecognized Tax Benefits, Accumulated Reduction	$ 743,000			$ 743,000
Deferred Tax Liability, Reversal	$ 352,000
Increase (Decrease) in Income Taxes Payable										$ (2,723,000)	(268,000)	(253,000)	$ (521,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense										$ (743,000)	$ 112,000	96,000
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year										2015
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Open Tax Year										2013
California Enterprise Zone Credits [Member]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest												$ 400,000

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.

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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

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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.

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The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.

+ References

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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