Acquisition Update (Details)	6 Months Ended
Jun. 30, 2012
Acquisition Update [Abstract]
Date of acquisition agreement	Jan. 25, 2012
Shares acquired ratio	1.90

Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

No definition available.

Name:	us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration