STOCK-BASED COMPENSATION (Details)	1 Months Ended
	Sep. 30, 2012 2009 Plan	Sep. 30, 2011 2009 Plan	Apr. 30, 2010 2009 Plan	Mar. 31, 2013 2009 Plan	Apr. 30, 2009 2009 Plan	Mar. 31, 2013 Incentive stock plan	Apr. 30, 2008 Incentive stock plan	Mar. 31, 2013 2002 Plan	Jun. 30, 2002 2002 Plan
Stock-based compensation
Number of shares issuable					6,409,000		6,500,000		11,000,000
Number of new shares available for grant					4,900,000
Number of shares allocated from other plan					1,509,000
Increase in the available shares for issuance	2,800,000	5,000,000	2,750,000
Number of shares available for grant				2,766,000		0		0
Number of shares available for grant before increase							4,500,000