Note 3 - Income Taxes (Details Textual) - USD ($)	3 Months Ended								12 Months Ended			24 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2016
California Enterprise Zone Credits [Member]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest										$ 400,000
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year									2013
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Open Tax Year									2012
Income Tax Expense (Benefit)	$ (1,410,000)	$ (285,000)	$ (55,000)	$ (185,000)	$ (360,000)	$ (60,000)	$ (675,000)	$ (25,000)	$ (1,935,000)	(1,120,000)	$ (490,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(2,372,000)	$ (623,000)	$ 152,000	$ (135,000)	(520,000)	$ (27,000)	$ (171,000)	$ 408,000	$ (2,978,000)	$ (310,000)	$ 141,000
Effective Income Tax Rate Reconciliation, Percent									65.00%	360.90%	(347.50%)
Liability for Uncertainty in Income Taxes, Noncurrent	$ 2,723,000				$ 2,991,000				$ 2,723,000	$ 2,991,000	$ 3,244,000	$ 2,723,000
Increase (Decrease) in Income Taxes Payable									(268,000)	(253,000)	3,244,000	$ (521,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense									$ 112,000	$ 96,000	$ 537,000