Financial Instruments - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities that were in an unrealized loss position for more than 12 months.	$ 0	$ 0
Cash collateral posted	$ 0	1,100,000
Foreign currency forward contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative, maturity	15 months
Unrealized loss in accumulated other comprehensive loss	$ 1,500,000
Reclassification from accumulated other comprehensive income into earnings over next 12 month	1,500,000
Notional value	81,300,000.0	79,600,000.0
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities within Level 3 of the fair value hierarchy	$ 0	$ 0