Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended
Jul. 31, 2016	Dec. 31, 2016
Pending Litigation
Loss Contingencies [Line Items]
Loss contingency accrual		$ 2.5
Korea (South), Won
Loss Contingencies [Line Items]
Income tax examination, estimate of possible loss	$ 12.0

Estimated amount of loss resulting from an adverse tax position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration