Derivatives and Hedging Activities - Fair Value of Derivatives and Balance Sheet Classification (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 566	$ 583
Liability Derivatives	(1,314)	(1,463)
Derivatives not designated as hedging instruments: | Interest rate products | Accrued liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	(401)	0
Derivatives not designated as hedging instruments: | Interest rate products | Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	(438)	0
Derivatives not designated as hedging instruments: | Cross-currency swap | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	566	0
Liability Derivatives	0	0
Derivatives not designated as hedging instruments: | Cross-currency swap | Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	(475)	0
Derivatives designated as hedging instruments: | Interest rate products | Accrued liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	0	(12)
Derivatives designated as hedging instruments: | Interest rate products | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	15
Liability Derivatives	0	0
Derivatives designated as hedging instruments: | Interest rate products | Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	0	(9)
Derivatives designated as hedging instruments: | Cross-currency swap | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	568
Liability Derivatives	0	0
Derivatives designated as hedging instruments: | Cross-currency swap | Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	$ 0	$ (1,442)