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Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in-Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Beginning balance (in shares) at Oct. 31, 2018   154,318,531      
Beginning balance at Oct. 31, 2018 $ 1,929,334 $ 1,543 $ 6,881,223 $ (5,780) $ (4,947,652)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 33,616       33,616
Other comprehensive income (loss) (4,860)     (4,860)  
Repurchase of common stock - repurchase program (in shares)   (591,897)      
Repurchase of common stock - repurchase program (21,162) $ (6) (21,156)    
Issuance of shares from employee equity plans (in shares)   1,329,352      
Issuance of shares from employee equity plans 10,899 $ 13 10,886    
Share-based compensation expense 13,755   13,755    
Settlement of debt conversion liability (in shares)   1,585,140      
Settlement of debt conversion liability 52,944 $ 16 52,928    
Shares repurchased for tax withholdings on vesting of stock unit awards (in shares)   (304,916)      
Shares repurchased for tax withholdings on vesting of stock unit awards (10,026) $ (3) (10,023)    
Ending balance (in shares) at Jan. 31, 2019   156,336,210      
Ending balance at Jan. 31, 2019 $ 2,054,305 $ 1,563 6,927,613 (10,640) (4,864,231)
Beginning balance (in shares) at Oct. 31, 2019 154,403,850 154,403,850      
Beginning balance at Oct. 31, 2019 $ 2,172,761 $ 1,544 6,837,714 (22,084) (4,644,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 62,328       62,328
Other comprehensive income (loss) (5,627)     (5,627)  
Repurchase of common stock - repurchase program (in shares)   (1,288,111)      
Repurchase of common stock - repurchase program (50,704) $ (13) (50,691)    
Issuance of shares from employee equity plans (in shares)   1,128,096      
Issuance of shares from employee equity plans 11,862 $ 11 11,851    
Share-based compensation expense 15,602   15,602    
Shares repurchased for tax withholdings on vesting of stock unit awards (in shares)   (297,002)      
Shares repurchased for tax withholdings on vesting of stock unit awards $ (12,572) $ (3) (12,569)    
Ending balance (in shares) at Jan. 31, 2020 153,946,833 153,946,833      
Ending balance at Jan. 31, 2020 $ 2,193,650 $ 1,539 $ 6,801,907 $ (27,711) $ (4,582,085)