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Note 9 - Leases - Supplemental Balance Sheet Information Related to Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating lease right-of use assets	$ 6,897	$ 7,761
Operating lease liabilities, current	2,142	2,111
Operating lease liabilities, long term	6,488	7,481
Total operating lease liabilities	$ 8,630	$ 9,592
Weighted average remaining lease term (in years) (Year)	6 years 8 months 12 days	7 years 4 months 24 days
Weighted average discount rate	9.30%	9.30%

X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

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X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

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X

- Definition

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

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- 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.

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