Litigation (Details Textual) (USD $)	1 Months Ended
Mar. 31, 2011	Dec. 31, 2010
Litigation Settlement, Gross		$ 9,000,000
Loss Contingency Number of Causesof Actions Against Defendants	9
Pending Litigation [Member]
Litigation Settlement, Gross	150,000
Each Cause Of Actions [Member]
Litigation Settlement, Gross		$ 1,000,000

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