XML 79 R63.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-Based Compensation - Stock Option Plans (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
item
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
$ / shares
shares
Share-based compensation disclosures      
Share-based compensation expense | $ $ 26,400 $ 31,900 $ 32,000
Liability related to awards | $ 92,358 130,970  
Restricted Shares Award      
Share-based compensation disclosures      
Share-based compensation expense | $ $ 26,000 $ 31,400 $ 31,300
Number of types of performance share awards | item 2    
Option to purchase common stock available for grant 14,300,000    
Shares awarded during period 2,392,000    
Options      
Forfeited (in shares) (788,000)    
Weighted Average Exercise Price      
Forfeited (in dollars per share) | $ / shares $ 10.25    
Restricted Shares Award | Employees and Director      
Share-based compensation disclosures      
Shares awarded during period 2,392,486 1,130,304 1,885,440
Aggregate value of restricted stock awards at date of grant | $ $ 16,600 $ 14,500 $ 20,500
Fair value of awards vested | $ $ 8,700 $ 19,200 $ 13,500
Restricted Shares Award | Maximum      
Share-based compensation disclosures      
Vesting period of shares 5 years    
Restricted Shares Award | Maximum | Employees and Director      
Share-based compensation disclosures      
Vesting period of shares 4 years 4 years 4 years
Restricted Stock Based on Performance Conditions      
Share-based compensation disclosures      
Shares awarded during period 1,010,000    
Fair value of awards vested | $ $ 7,000 $ 7,100 $ 13,900
Restricted Stock Based on Performance Conditions | Executives      
Share-based compensation disclosures      
Vesting period of shares 3 years 3 years 3 years
Total fair value of option vested during the period | $ $ 4,800 $ 7,100 $ 1,500
Shares awarded during period 1,009,948 461,919 1,284,829
Liability related to awards | $ $ 2,200 $ 2,200  
Restricted Stock Based on Market Conditions      
Share-based compensation disclosures      
Vesting period of shares 3 years 3 years 3 years
Shares awarded during period 1,058,158 397,692 749,427
Aggregate value of restricted stock awards at date of grant | $ $ 5,100 $ 4,400 $ 4,200
Assumptions used to value grant date fair value      
Risk free interest rate (as a percent) 2.02% 1.62% 1.41%
Expected volatility (as a percent) 57.00% 55.00% 52.00%
Closing stock price at grant date (in dollars per share) | $ / shares $ 6.87 $ 16.81 $ 8.64
Expected term (in years) 3 years 3 years 3 years
Key Officer Director and Managerial Employee Stock Options      
Share-based compensation disclosures      
Option to purchase common stock available for grant 15,200,000 6,800,000  
Exercise period 10 years    
Total fair value of option vested during the period | $ $ 400 $ 500 $ 1,900
Options      
Options outstanding at the beginning of the period (in shares) 4,394,000    
Granted (in shares) 171,000 124,271  
Exercised (in shares) 0    
Forfeited (in shares) (789,000)    
Options outstanding at the end of the period (in shares) 3,776,000 4,394,000  
Options exercisable at the end of the period (in shares) 3,759,000    
Weighted Average Exercise Price      
Options outstanding at the beginning of the period (in dollars per share) | $ / shares $ 13.04    
Granted (in dollars per share) | $ / shares 4.82    
Forfeited (in dollars per share) | $ / shares 19.28    
Options outstanding at the end of the period (in dollars per share) | $ / shares 11.36 $ 13.04  
Options exercisable at the end of the period (in dollars per share) | $ / shares $ 11.35    
Weighted Average Remaining Contractual Term      
Options outstanding at the end of the period 2 years 11 days    
Options exercisable at the end of the period 2 years 4 days    
Assumptions used to value grant date fair value      
Granted (in dollars per share) | $ / shares $ 1.75 $ 2.86 $ 3.52
Risk free interest rate (as a percent) 2.59% 1.85% 1.09%
Dividend yield (as a percent) 3.03% 2.94% 2.21%
Expected volatility (as a percent) 57.11% 50.82% 45.69%
Expected term (in years) 4 years 4 years 4 years
Key Officer Director and Managerial Employee Stock Options | Employees Executives And Directors      
Share-based compensation disclosures      
Vesting period of shares 4 years 4 years 4 years
Options      
Granted (in shares) 171,124 124,271 99,711