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Related Parties	3 Months Ended
Related Parties	Mar. 31, 2019
Related Party Transactions [Abstract]
Related Parties	Related Parties At March 31, 2019 and December 31, 2018, the Company had no amounts receivable from or payable to related parties. Prior to June 2018, the Company subleased airplane and office space to a firm owned by the Chairman of the Company. The Company recognized rent reimbursements of less than $0.1 million for the three months ended March 31, 2018.