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Note 8 - Leases - Leases Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Amortization of finance lease assets $ 293 $ 268 $ 869 $ 709
Interest on finance lease liabilities 82 92 259 265
Total finance lease costs 375 360 1,128 974
Operating lease cost 716 741 2,119 2,260
Short-term lease cost 187 166 483 540
Variable lease cost [1] 218 220 669 647
Sublease income (64) (47) (143) (140)
Total operating lease costs 1,057 1,080 3,128 3,307
Total lease cost $ 1,432 $ 1,440 4,256 4,281
Operating cash outflow from operating leases     $ 2,609 $ 2,722
Weighted-average remaining lease term-finance leases at end of period (in years) (Year) 2 years 6 months 2 years 2 years 6 months 2 years
Weighted-average remaining lease term-operating leases at end of period (in years) (Year) 8 years 3 months 18 days 9 years 1 month 6 days 8 years 3 months 18 days 9 years 1 month 6 days
Weighted-average discount rate-finance leases at end of period 6.00% 6.40% 6.00% 6.40%
Weighted-average discount rate-operating leases at end of period 8.70% 8.60% 8.70% 8.60%
[1] Variable lease costs consist primarily of taxes, insurance, utilities, and common area or other maintenance costs for the Company’s leased facilities and equipment.