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Note 9 - Leases - Lease Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating lease costs $ 2,074 $ 2,000 $ 1,541
Short-term lease costs 602 541 302
Total lease costs 2,676 2,541 1,843
Operating cash flows – cash paid for operating lease liabilities 1,732 1,425 1,320
Non-cash – Operating lease right-of-use assets obtained in exchange for new lease liabilities $ 4,945 $ 243 $ 782
Weighted-average remaining lease term (in years) (Year) 3 years 1 month 6 days 2 years 9 months 18 days 3 years 7 months 6 days
Weighted average discount rate 4.74% 5.61% 5.61%