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- Lease Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating lease cost $ 947 $ 927 $ 2,871 $ 2,838
Short-term lease cost 39 35 145 107
Variable Lease, Cost 43 17 100 41
Depreciation of leased assets 111 111 328 329
Interest on lease liabilities 117 123 356 374
Total finance lease cost 228 234 684 703
Total lease cost $ 1,257 $ 1,213 $ 3,800 $ 3,689