MERGER AGREEMENT (Details) (USD $)	Feb. 25, 2013
Class A Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Cash price per share without interest (in dollars per share)	$ 12.00
Class B Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Cash price per share without interest (in dollars per share)	$ 12.90

For an acquired entity, price of a single share of a number of saleable stocks of a company.

No definition available.

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant