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Note 8 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lease Cost:
Amortization of right of use assets	$ 4	$ 0
Interest on lease liabilities	1	0
Operating lease cost	300	305
Variable lease cost	60	57
Short-term lease cost	7	7
Total lease cost	372	369
Operating cash flows from operating leases	305	305
Financing cash flows from finance leases	$ 4	$ (0)
Finance (Year)	6 years 29 days
Operating (Year)	1 year 10 months 13 days	2 years 5 months 12 days
Finance	2.26%	0.00%
Operating	4.36%	4.45%

X

- Definition

Amount of interest expense on finance lease liability.

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X

- Definition

Amount of cash outflow for principal payment on finance lease.

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X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

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- Definition

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

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X

- Definition

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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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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No definition available.

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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.

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- Definition

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

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X

- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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