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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount accrued 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
Note 11 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0		$ 0
Unrecognized Tax Benefits	1,400,000		1,400,000
Unrecognized Tax Benefits, Period Increase (Decrease)			0
Income Tax Expense (Benefit)	$ 28,000	$ (39,000)	$ 11,000	$ (108,000)
Earliest Tax Year [Member]
Open Tax Year			1998
Latest Tax Year [Member]
Open Tax Year			2016
Domestic Tax Authority [Member]
Income Tax Expense (Benefit)			$ 6,000