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Note 8 - Leases - Leases Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Amortization of finance lease assets $ 288 $ 186
Interest on finance lease liabilities 80 68
Total finance lease costs 368 254
Operating lease cost 698 759
Short-term lease cost 151 196
Variable lease cost [1] 226 230
Sublease income (47) (46)
Total operating lease costs 1,028 1,139
Total lease cost 1,396 1,393
Operating cash outflow from operating leases $ 869 $ 887
Weighted-average remaining lease term-finance leases at end of period (in years) (Year) 2 years 10 months 24 days 1 year 10 months 24 days
Weighted-average remaining lease term-operating leases at end of period (in years) (Year) 8 years 8 months 12 days 9 years 6 months
Weighted-average discount rate-finance leases at end of period 6.20% 9.00%
Weighted-average discount rate-operating leases at end of period 8.60% 8.50%
[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.