Derivative Financial Instruments - Additional Information (Details) $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net losses on derivative financial instruments in accumulated other comprehensive income	$ 0.4
Notional amount of foreign currency forward contracts	$ 31.6

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

No definition available.

Name:	us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration