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Acquisitions - Warehousing (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Business Acquisition [Line Items]    
Business Combination, Contingent Consideration, Liability [1] $ 21,200 $ 16,200
Warehousing Co [Member]    
Business Acquisition [Line Items]    
Business Combination, Contingent Consideration, Liability $ 16,200 $ 16,200
[1] The carrying amount of the contingent consideration associated with acquisitions is included in both the "Accrued liabilities" and "Other long-term liabilities" line items on the condensed consolidated balance sheets.