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Note 11 - Income Taxes (Details Textual) $ in Thousands	12 Months Ended
	Jun. 30, 2021 USD ($)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (7,000)
Unrecognized Tax Benefits, Ending Balance	0
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	16,800
State and Local Jurisdiction [Member] | Alaska Department of Revenue [Member]
Operating Loss Carryforwards, Total	$ 10,100

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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-Topic 740
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X

- Definition

Amount of unrecognized tax benefits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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