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Note 10 - Commitments and Contingencies - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating lease cost	$ 418	$ 826
Sublease income	0	(421)
Net lease cost	418	405
Operational cash flow used for operating leases	$ 475	$ 927
Weighted-average remaining lease term (in years) (Year)	2 years 6 months	1 year 2 months 12 days
Weighted-average discount rate	6.00%	12.00%

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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X

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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X

- Definition

Weighted average discount rate for operating lease calculated at point in time.

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X

- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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X

- Definition

Amount of sublease income excluding finance and operating lease expense.

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