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Subsequent Events (Details) - Subsequent Event - USD ($)
Aug. 05, 2019
Jul. 16, 2019
Subsequent Event [Line Items]    
Cash paid for asset acquisition $ 70,000,000  
5.750% Senior Unsecured Notes Due 2027 | Unsecured Debt    
Subsequent Event [Line Items]    
Principal amount   $ 350,000,000
Interest rate, percentage   5.75%
Net proceeds from issuance of debt   $ 344,000,000