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Cash and Cash Equivalents and Fair Value of Financial Instruments - Schedule of Financial Assets Measured At Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap contracts $ 1,270 $ 1,378
Total financial assets 1,270 1,378
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap contracts 0 0
Total financial assets 0 0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap contracts 1,270 1,378
Total financial assets 1,270 1,378
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap contracts 0 0
Total financial assets $ 0 $ 0