Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments, Excluding Adjustments for Performance Risk and Their Classification on Condensed Consolidated Balance Sheets (Details) - Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Interest Rate Swaps and Collars | Other Current Assets
Derivative [Line Items]
Fair value of derivative instruments, asset derivatives	$ 1,617	$ 1,936
Interest Rate Swaps and Collars | Other Assets
Derivative [Line Items]
Fair value of derivative instruments, asset derivatives	1,472	$ 2,795
Cross Currency Swaps | Other Assets
Derivative [Line Items]
Fair value of derivative instruments, asset derivatives	859
Cross Currency Swaps | Other Liabilities
Derivative [Line Items]
Fair value of derivative instruments, liability derivatives	$ 3,129