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Operating Leases - Other Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Supplemental Cash Flows Information    
Cash paid for operating lease liabilities $ 4,012 $ 3,877
Operating lease right-of-use assets added in exchange for new lease liabilities $ 417 $ 1,137