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Revenues (Notes)
3 Months Ended
Mar. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenues The Company has contract liabilities of $14.0 million and $18.4 million at March 31, 2021 and December 31, 2020, respectively, for payments received in advance of providing services under certain contracts. Contract liabilities are included in other current liabilities on the condensed consolidated balance sheets and are generally recognized as revenues within three months from the balance sheet date.