CONSOLIDATED BALANCE SHEETS (unaudited) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jul. 31, 2012
Current assets
Cash and cash equivalents	$ 177,446	$ 133,629
Short-term investments	263,436	212,601
Accounts receivable, net	71,014	80,190
Inventory, net	27,873	22,202
Deferred cost of revenue	8,148	11,241
Prepaids and other	20,665	18,996
Deferred income tax assets, current	36,064	34,584
Total current assets	604,646	513,443
Property and equipment, net	26,607	19,901
Goodwill	56,947	56,947
Intangible assets, net	21,341	27,036
Deferred income tax assets, non-current	15,062	20,664
Other non-current assets	6,417	10,905
Total assets	731,020	648,896
Current liabilities
Accounts payable	16,936	22,504
Accrued liabilities	56,570	52,375
Income taxes payable, current	4,428	2,032
Deferred revenue, current	89,342	80,602
Total current liabilities	167,276	157,513
Deferred revenue, non-current	29,108	22,375
Other non-current liabilities	7,544	2,118
Total liabilities	203,928	182,006
Commitments and contingencies (Note 13)
Stockholders’ equity
Common stock: $0.0001 par value; 350,000 shares authorized at April 30, 2013 and July 31, 2012; 115,677 and 111,529 shares issued and outstanding at April 30, 2013 and July 31, 2012, respectively	12	11
Additional paid-in capital	658,402	582,077
Accumulated other comprehensive loss	(1,502)	(1,405)
Accumulated deficit	(129,820)	(113,793)
Total stockholders’ equity	527,092	466,890
Total liabilities and stockholders’ equity	$ 731,020	$ 648,896