CONTINGENCIES (Details) (Purported class-action lawsuits)	1 Months Ended
Aug. 31, 2010 item	Nov. 30, 2009 item
Purported class-action lawsuits
CONTINGENCIES
Number of former officers named as defendants in lawsuits		4
Number of lawsuits filed		2
Number of cases after consolidation	1

The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration