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Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - Interest Rate Swap [Member] - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Derivatives, Fair Value [Line Items]    
Derivative assets   $ 572
Derivative liabilities $ 42,641 7,943
Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets   572
Derivative liabilities $ 42,641 $ 7,943