Fair Value Measurements, Financial Instruments, and Credit Risk - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements at Reporting Date Using - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	$ 6,305	$ 7,691
Other current assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – current	1,047	1,558
Other long-term assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – noncurrent	2,442	3,635
Retirement plan asset – noncurrent	2,613	2,485
Other payables and accruals
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liability – current	203	13
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	2,613	2,485
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other current assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – current	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other long-term assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – noncurrent	0	0
Retirement plan asset – noncurrent	2,613	2,485
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other payables and accruals
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liability – current	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	3,692	5,206
Significant Other Observable Inputs (Level 2) | Other current assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – current	1,047	1,558
Significant Other Observable Inputs (Level 2) | Other long-term assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – noncurrent	2,442	3,635
Retirement plan asset – noncurrent	0	0
Significant Other Observable Inputs (Level 2) | Other payables and accruals
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liability – current	203	13
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) | Other current assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – current	0	0
Significant Unobservable Inputs (Level 3) | Other long-term assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative asset – noncurrent	0	0
Retirement plan asset – noncurrent	0	0
Significant Unobservable Inputs (Level 3) | Other payables and accruals
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liability – current	$ 0	$ 0