Note 8 - Income Taxes -Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Carrying values of ownership interests and other holdings	$ 31,985	$ 38,361
Tax loss and credit carryforwards	77,045	76,023
Disallowed interest carryforwards	7,120	7,292
Accrued expenses	24	497
Stock-based compensation	268	302
Other	136	482
Deferred Tax Assets, Gross, Total	116,578	122,957
Valuation allowance	(116,578)	(122,957)
Net deferred tax asset	$ 0	$ 0

Represents the deferred tax assets, disallowed interest carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from equity method investments.

+ References

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-Publisher FASB
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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