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Financial Instruments - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 05, 2019
Oct. 02, 2019
Interest Rate Swap      
Derivative [Line Items]      
Unrealized gain (loss) on derivatives $ (243,000)    
Secured Debt | Interest Rate Swap      
Derivative [Line Items]      
Derivative notional amount $ 350,000,000 $ 350,000,000  
Term Loan Facility | Revolving Credit Facility | Secured Debt      
Derivative [Line Items]      
Debt instrument, face amount     $ 400,000,000