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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Balance, beginning of year (in shares) at Nov. 30, 2015   50,580,000      
Balance, beginning of year at Nov. 30, 2015 $ 522,464 $ 506 $ 227,424 $ 319,162 $ (24,628)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of stock under employee stock purchase plan (in shares)   266,000      
Issuance of stock under employee stock purchase plan 5,328 $ 3 5,325    
Exercise of stock options (in shares)   260,000      
Exercise of stock options 4,698 $ 2 4,696    
Vesting of restricted stock units and release of deferred stock units (in shares)   700,000      
Vesting of restricted stock units and release of deferred stock units 7 $ 7      
Withholding tax payments related to net issuance of restricted stock units (in shares)   (156,000)      
Withholding tax payments related to net issuance of restricted stock units (3,984) $ (2) (3,982)    
Tax benefit arising from employee stock purchase plan, stock options and restricted share activity 489   489    
Stock-based compensation 22,541   22,541    
Dividends declared $ (6,067)     (6,067)  
Treasury stock repurchases and retirements (in shares) (3,100,000) (3,113,000)      
Treasury stock repurchases and retirements $ (79,188) $ (31) (17,482) (61,675)  
Net income (loss) (55,726)     (55,726)  
Other comprehensive income (loss), net of tax (3,933)       (3,933)
Balance, end of year (in shares) at Nov. 30, 2016   48,537,000      
Balance, end of year at Nov. 30, 2016 406,629 $ 485 239,011 195,694 (28,561)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of stock under employee stock purchase plan (in shares)   220,000      
Issuance of stock under employee stock purchase plan 4,900 $ 2 4,898    
Exercise of stock options (in shares)   203,000      
Exercise of stock options 5,108 $ 2 5,106    
Vesting of restricted stock units and release of deferred stock units (in shares)   660,000      
Vesting of restricted stock units and release of deferred stock units 7 $ 7      
Withholding tax payments related to net issuance of restricted stock units (in shares)   118,000      
Withholding tax payments related to net issuance of restricted stock units (3,756) $ (1) (3,755)    
Tax benefit arising from employee stock purchase plan, stock options and restricted share activity 679   679    
Stock-based compensation 14,153   14,153    
Dividends declared $ (24,679)     (24,679)  
Treasury stock repurchases and retirements (in shares) (2,200,000) (2,221,000)      
Treasury stock repurchases and retirements $ (73,936) $ (22) (10,729) (63,185)  
Net income (loss) 37,417     37,417  
Other comprehensive income (loss), net of tax $ 9,562       9,562
Balance, end of year (in shares) at Nov. 30, 2017 47,281,035 47,281,000      
Balance, end of year at Nov. 30, 2017 $ 376,084 $ 473 249,363 145,247 (18,999)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Adjustment due to adoption of ASU 2016-09 | Accounting Standards Update 2016-09, Excess Tax Benefit Component     641 (641)  
Issuance of stock under employee stock purchase plan (in shares)   225,000      
Issuance of stock under employee stock purchase plan 5,458 $ 2 5,456    
Exercise of stock options (in shares)   189,000      
Exercise of stock options 3,858 $ 2 3,856    
Vesting of restricted stock units and release of deferred stock units (in shares)   407,000      
Vesting of restricted stock units and release of deferred stock units 4 $ 4      
Withholding tax payments related to net issuance of restricted stock units (in shares)   (108,000)      
Withholding tax payments related to net issuance of restricted stock units (3,999) $ (1) (3,998)    
Stock-based compensation 20,569   20,569    
Dividends declared $ (26,169)     (26,169)  
Treasury stock repurchases and retirements (in shares) (2,900,000) (2,879,000)      
Treasury stock repurchases and retirements $ (120,000) $ (29) (9,285) (110,686)  
Net income (loss) 63,491     63,491  
Other comprehensive income (loss), net of tax $ (9,214)       (9,214)
Balance, end of year (in shares) at Nov. 30, 2018 45,114,935 45,115,000      
Balance, end of year at Nov. 30, 2018 $ 310,082 $ 451 $ 266,602 $ 71,242 $ (28,213)