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Leases - Lease Balance Sheet Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Assets:    
Operating lease right-of-use assets $ 8,541 $ 8,140
Liabilities:    
Operating lease liabilities 3,587 4,847
Long-term operating lease liabilities 10,774 7,920
Total operating lease liabilities $ 14,361 $ 12,767
Weighted average remaining lease term (years) 7 years 3 months 10 days 3 years 5 months 4 days
Weighted average discount rate 3.60% 4.50%