EARNINGS (LOSS) PER SHARE CALCULATION (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Numerator
Net income (loss)	$ 3,861	$ (11,546)
Net income (loss) used to calculate Diluted EPS	$ 3,861	$ (11,546)
Denominator
Basic weighted average shares outstanding (in shares)	140,682	136,675
Add: Shares underlying outstanding stock options and restricted stock units and issuable under employee stock purchase plan (in shares)	1,502	0
Dilutive weighted average shares outstanding (in shares)	142,184	136,675
EPS
Basic EPS (in dollars per share)	$ 0.03	$ (0.08)
Diluted EPS (in dollars per share)	$ 0.03	$ (0.08)