NET INCOME (LOSS) PER SHARE (Computation of Net Income (Loss) Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
NET INCOME (LOSS) PER SHARE [Abstract]
Net income (loss)	$ 3,393	$ (16,660)
Weighted average shares and common share equivalents ("CSE"):
Basic	243,309	236,628
Dilutive CSE from stock plans	2,463
Dilutive CSE from purchase plan	72
Diluted	245,844	236,628
Basic and diluted net income (loss) per share	$ 0.01	$ (0.07)