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Related Party Transactions (Details) - RLW - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]      
Revenue from related parties $ 0 $ 6,400,000 $ 15,300,000
Main Office      
Related Party Transaction [Line Items]      
Lease expense $ 900,000