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Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - Interest rate swap - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Derivatives, Fair Value [Line Items]    
Derivative assets $ 283 $ 572
Derivative liabilities 18,369 7,943
Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 283 572
Derivative liabilities $ 18,369 $ 7,943