XML 78 R64.htm IDEA: XBRL DOCUMENT v3.3.1.900
Stock-Based Compensation Plans (Details)
3 Months Ended 12 Months Ended
Feb. 01, 2016
$ / shares
shares
Apr. 21, 2015
shares
Apr. 20, 2015
$ / shares
Feb. 06, 2013
Dec. 31, 2015
USD ($)
$ / shares
shares
Sep. 30, 2015
$ / shares
shares
Jun. 30, 2015
$ / shares
Mar. 31, 2015
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Sep. 30, 2014
$ / shares
Jun. 30, 2014
$ / shares
Mar. 31, 2014
$ / shares
Dec. 31, 2015
USD ($)
plan
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Dec. 31, 2013
USD ($)
$ / shares
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]                              
Number of stock-based incentive plans | plan                         1    
Number of stock option plans superseded | plan                         2    
Stock-Based Compensation                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares                         0    
Aggregate Intrinsic Value                              
Total intrinsic value of stock options exercised (in dollars) | $                         $ 2,400,000 $ 800,000 $ 2,600,000
Weighted-Average Grant-Date Fair Value, Unvested Stock Options                              
Basic (in USD per share)         $ 0.30 $ 0.44 $ 0.44 $ 0.20 $ 0.21 $ 0.42 $ 0.42 $ 0.25 $ 1.39 $ 1.30 $ 1.05
Diluted (in USD per share)         $ 0.30 $ 0.44 $ 0.43 $ 0.20 $ 0.21 $ 0.42 $ 0.42 $ 0.25 $ 1.38 $ 1.29 $ 1.05
Unrecognized compensation cost and vesting period                              
Unrecognized compensation costs related to unvested stock-based compensation arrangements | $         $ 17,200,000               $ 17,200,000    
Weighted-average period for recognition of unrecognized stock-based compensation expense                         2 years    
Other disclosures                              
Stock-based compensation expense recognized in operating expenses | $                         $ 11,212,000 $ 12,299,000 $ 12,053,000
Document Fiscal Year Focus                         2015    
Stock Bonus Plan                              
Other disclosures                              
Shares issued and committed to issue | shares                         9,700.0 16,000 11,000
Stock-based compensation expense recognized in operating expenses | $                         $ 700,000 $ 900,000 $ 700,000
Requisite service period for options to vest                         10 years    
Restricted Stock Units                              
Restricted stock unit activity                              
Outstanding at the beginning of the period (in shares) | shares               504,000         504,000    
Awarded (in shares) | shares                         351,000    
Vested (in shares) | shares                         (322,000)    
Forfeited (in shares) | shares                         (6,000)    
Outstanding at the end of the period (in shares) | shares         527,000       504,000       527,000 504,000  
Outstanding and expected to vest at the end of the period (in shares) | shares         515,000               515,000    
Weighted-Average Exercise Price                              
Outstanding at the beginning of the period (in dollars per share)               $ 31.67         $ 31.67    
Awarded (in dollars per share)     $ 36.33                   31.80    
Vested (in dollars per share)                         31.99    
Forfeited (in dollars per share)                         31.55    
Outstanding at the end of the period (in dollars per share)         $ 31.56       $ 31.67       31.56 $ 31.67  
Outstanding and expected to vest at the end of the period (in dollars per share)         $ 31.56               $ 31.56    
Aggregate Intrinsic Value                              
Outstanding at the end of the period (in dollars) | $         $ 17,994,000       $ 17,423,000       $ 17,994,000 $ 17,423,000  
Outstanding and expected to vest at end of the period (in dollars) | $         $ 17,584,000               $ 17,584,000    
Closing price per share (in dollars per share)         $ 34.15               $ 34.15    
Total intrinsic value of awards vested (in dollars) | $                         $ 10,300,000 $ 9,100,000 5,700,000
Weighted-Average Exercise Price                              
Outstanding at the beginning of the period (in dollars per share)               31.67         $ 31.67    
Forfeited (in dollars per share)                         31.55    
Outstanding at the end of the period (in dollars per share)         $ 31.56       $ 31.67       $ 31.56 $ 31.67  
Aggregate Intrinsic Value                              
Outstanding at the end of the period (in dollars) | $         $ 17,994,000       $ 17,423,000       $ 17,994,000 $ 17,423,000  
Non-Qualified Stock Options                              
Weighted-Average Exercise Price                              
Outstanding at the beginning of the period (in dollars per share)               $ 29.48         $ 29.48    
Forfeited (in dollars per share)                         29.66    
Outstanding at the end of the period (in dollars per share)         $ 29.55       $ 29.48       $ 29.55 $ 29.48  
Aggregate Intrinsic Value                              
Outstanding at the end of the period (in dollars) | $         $ 2,406,000       $ 4,381,000       $ 2,406,000 $ 4,381,000  
Total intrinsic value of awards vested (in dollars) | $                         $ 0 $ 0 $ 0
Non-Qualified Stock Options activity                              
Outstanding at the beginning of the period (in shares) | shares               855,000         855,000    
Exercised (in shares) | shares                         (330,000)    
Forfeited (in shares) | shares                         (2,000)    
Outstanding at the end of the period (in shares) | shares         523,000       855,000       523,000 855,000  
Weighted-Average Exercise Price                              
Outstanding at the beginning of the period (in dollars per share)               $ 29.48         $ 29.48    
Exercised (in dollars per share)                         29.37    
Forfeited (in dollars per share)                         29.66    
Outstanding at the end of the period (in dollars per share)         $ 29.55       $ 29.48       $ 29.55 $ 29.48  
Weighted-Average Remaining Contractual Life                              
Outstanding at the end of the period                         2 years 1 month 6 days 3 years 1 month 6 days  
Aggregate Intrinsic Value                              
Outstanding at the end of the period (in dollars) | $         $ 2,406,000       $ 4,381,000       $ 2,406,000 $ 4,381,000  
Closing price of share (in dollars per share)         $ 34.15               $ 34.15    
Unvested Options [Member]                              
Number of Shares, Unvested Stock Options                              
Vested (in shares) | shares               (99,000)              
Unvested (in shares) | shares           0                  
Weighted-Average Grant-Date Fair Value, Unvested Stock Options                              
Vested (in dollars per share)               $ 10.33              
Independent directors | Restricted Stock Units                              
Restricted stock unit activity                              
Awarded (in shares) | shares   1,950                          
Number of Non-Employee Directors | shares   6                          
Independent directors | Restricted Stock Units | Restrictions lapse (awards vest) on date of award                              
Stock-Based Compensation                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       25.00%                      
Independent directors | Restricted Stock Units | Restrictions lapse (awards vest) on first, second and third anniversaries of the date of the award                              
Stock-Based Compensation                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       25.00%                      
Restrictions on awards to certain officers | Restricted Stock Units | Restrictions lapse (awards vest) on the fourth anniversary of the date of the award                              
Stock-Based Compensation                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       25.00%                      
Restrictions on awards to certain officers | Restricted Stock Units | Restrictions lapse (awards vest) on the third anniversary of the date of the award                              
Stock-Based Compensation                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       100.00%                      
Subsequent event | Restricted Stock Units                              
Restricted stock unit activity                              
Awarded (in shares) | shares 431,439                            
Subsequent event | Independent directors | Restricted Stock Units                              
Weighted-Average Exercise Price                              
Awarded (in dollars per share) $ 32.63