Consolidated Statements of Changes in Equity/(Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Income	Non- Controlling Interest
Beginning balance at Oct. 31, 2012	$ 595,637	$ 1,691	$ 545,306	$ (6,778)	$ (49,920)	$ 86,412	$ 18,926
Beginning balance, shares at Oct. 31, 2012		169,066,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	$ 8,769	$ 30	8,739
Exercise of stock options (shares)	2,985,792	2,986,000
Stock compensation expense	$ 21,556		21,556
Restricted stock	0	$ 1	(1)
Restricted stock, shares		78,000
Employee stock purchase plan	1,175	$ 4	1,171
Employee stock purchase plan, shares		449,000
Transactions with non-controlling interest holders	(59)		(45)				(14)
Net loss and other comprehensive loss	(242,878)				(229,424)	(12,494)	(960)
Ending balance at Oct. 31, 2013	384,200	$ 1,726	576,726	(6,778)	(279,344)	73,918	17,952
Ending balance, shares at Oct. 31, 2013		172,579,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	$ 4,580	$ 11	4,569
Exercise of stock options (shares)	1,058,416	1,070,000
Stock compensation expense	$ 17,260		17,260
Restricted stock	0	$ 1	(1)
Restricted stock, shares		75,000
Employee stock purchase plan	1,321	$ 3	1,318
Employee stock purchase plan, shares		333,000
Transactions with non-controlling interest holders	(16,543)		(10,840)				(5,703)
Net loss and other comprehensive loss	(334,584)				(308,063)	(16,630)	(9,891)
Ending balance at Oct. 31, 2014	56,234	$ 1,741	589,032	(6,778)	(587,407)	57,288	2,358
Ending balance, shares at Oct. 31, 2014		174,057,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	$ 0	$ 0	0
Exercise of stock options (shares)	0	0
Stock compensation expense	$ 4,342		4,342
Restricted stock	0	$ 3	(3)
Restricted stock, shares		362,000
Employee stock purchase plan	630	$ 6	624
Employee stock purchase plan, shares		581,000
Transactions with non-controlling interest holders	(1,570)		0				(1,570)
Net loss and other comprehensive loss	(349,303)				(306,172)	(42,343)	(788)
Ending balance at Oct. 31, 2015	$ (289,667)	$ 1,750	$ 593,995	$ (6,778)	$ (893,579)	$ 14,945	$ 0
Ending balance, shares at Oct. 31, 2015		175,000,000