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Other Long-Term Liabilities - Components (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other long-term liabilities    
Sale-leaseback arrangement $ 15,969 $ 16,712
Accrued liabilities expected to be covered by insurance 2,759 2,818
Deferred rent 214 307
Total other long-term liabilities $ 18,942 $ 19,837