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Leases - Lease Balances within the Consolidated Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Assets:    
Operating lease right-of-use assets $ 17,702 $ 19,522
Liabilities:    
Lease liability location within the Consolidated Balance Sheets us-gaap:OtherAccruedLiabilitiesCurrent  
Other accrued liabilities $ 5,838 6,094
Long-term operating lease obligations 11,292 13,681
Total lease liabilities $ 17,130 $ 19,775