Contingencies (Details) - Patent Infringement $ / shares in Units, $ in Millions	Apr. 22, 2013 USD ($) $ / shares
Loss Contingencies [Line Items]
Litigation settlement amount charge, net of tax	$ 1.0
Litigation settlement amount, negative impact on diluted earnings per share \| $ / shares	$ 0.04
General and Administrative
Loss Contingencies [Line Items]
Litigation Settlement charge	$ 1.5

The net-of-tax earnings per share amount of each material event or transaction (that would not reasonably be expected to recur in the foreseeable future) that possesses a high degree of abnormality and are clearly unrelated to, or incidentally related to, the ordinary and typical activities of the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1311-109256

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 20

-Section 45

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=6904752&loc=d3e14736-107780

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration