Proceeds from Litigation (Details) (Theft of Intellectual Property and Related Cases [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Theft of Intellectual Property and Related Cases [Member]
Litigation Cases [Line Items]
Proceeds received from litigation	$ 250

This element represents the gross amount awarded, to be received by, or to be remitted to the entity in settlement of litigation occurring during the period.

No definition available.

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