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Fair Value Measurements - Quantitative Disclosure of The Fair Value For Each Major Category Of Assets And Liabilities (Details) - Recurring - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Level 1    
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis    
Derivative interest rate swaps $ 0 $ 0
Total assets 0 0
Level 2    
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis    
Derivative interest rate swaps 462 1,637
Total assets 462 1,637
Level 3    
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis    
Derivative interest rate swaps 0 0
Total assets $ 0 $ 0