Derivative Financial Instruments - Summary of the Fair Value Amounts of Derivative Instruments (Details) - Significant Observable Inputs (Level 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 3,648	$ 3,379
Total derivative liabilities	1,929	33
Total Net derivative asset (liability)	1,719	3,346
Derivatives Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Total derivative assets	3,648	3,369
Total derivative liabilities	1,885	33
Derivatives Designated as Hedging Instruments: | Forward Currency Contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivative assets	0	176
Derivatives Designated as Hedging Instruments: | Forward Currency Contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Total derivative liabilities	0	33
Derivatives Designated as Hedging Instruments: | Interest Rate Swap | Other non-current assets
Derivatives, Fair Value [Line Items]
Total derivative assets	3,648	3,193
Derivatives Designated as Hedging Instruments: | Interest Rate Swap | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Total derivative liabilities	1,885	0
Derivatives Not Designated as Hedging Instruments:
Derivatives, Fair Value [Line Items]
Total derivative assets	0	10
Total derivative liabilities	44
Derivatives Not Designated as Hedging Instruments: | Forward Currency Contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivative assets	0	10
Derivatives Not Designated as Hedging Instruments: | Forward Currency Contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Total derivative liabilities	$ 44	$ 0