Note 4 - Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating lease expense	$ 283	$ 311	$ 882	$ 922
Financing lease expense	8	8	24	24
Short Term lease expense	34	4	55	17
Total lease expense	$ 325	$ 323	$ 961	$ 963
Weighted Average Remaining Lease Term (Years) - operating leases (Year)	6 years 4 months 28 days	7 years 4 months 17 days	6 years 4 months 28 days	7 years 4 months 17 days
Weighted Average Remaining Lease Term (Years) - financing leases (Year)	1 year 29 days	2 years 3 months 29 days	1 year 29 days	2 years 3 months 29 days
Weighted Average Discount Rate - operating leases	3.22%	3.23%	3.22%	3.23%
Weighted Average Discount Rate - financing leases	5.00%	5.00%	5.00%	5.00%
Operating cash flows from operating leases			$ 903	$ 980
Operating cash flows from financing lease			3	4
Financing cash flows from financing lease			14	13
Right-of-use assets obtained in exchange for new operating lease liabilities			$ 0	$ 121

Amount of interest expense on finance lease liability.

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Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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

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

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Amount of lease cost recognized by lessee for lease contract.

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Amount of operating lease expense. Excludes sublease income.

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

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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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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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