Commitments and Contingencies Commitments and Contingencies (Details) (Patent infringements, Minimum)	3 Months Ended
Mar. 31, 2015
Patent infringements \| Minimum
Loss Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number	1

Number of another entity's patents that the entity has allegedly infringed.

No definition available.

Name:	us-gaap_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration