Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Apr. 30, 2009
Commitments and Contingencies (Textual) [Abstract]
Return of payments received for components sold		$ 16.7
Loss Contingency, Settlement Agreement, Consideration	$ 3.5us-gaap_LitigationSettlementAmount

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

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