Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Details)

v3.3.1.900
STOCK-BASED COMPENSATION (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares issued to employees   72,760,969 72,932,222
Aggregate Intrinsic Value      
Proceeds received upon exercise of stock options $ 6
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Expiration term 10 years    
Shares issued to employees 0 0  
Exercised (in shares)     (1,000)
Options activity outstanding of stock option plan      
Balance outstanding at the beginning of the period (in shares)   1,000
Exercised (in shares)     (1,000)
Balance outstanding at the end of the period (in shares)  
Weighted-Average Exercise Price      
Balance at the beginning of the period (in dollars per share) $ 3.68
Exercised (in dollars per share) $ 3.68
Exercisable (in dollars per share)
Balance at the end of the period (in dollars per share)
Weighted-Average Remaining Contractual Term      
Balance at the beginning of the period     29 days
Balance at the end of the period     29 days
Aggregate Intrinsic Value      
Balance at the beginning of the period $ 17
Balance at the end of the period
Time Lapse Restricted Shares Issued 2004 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 6 years    
Shares issued to employees 700,000 600,000 700,000
Vesting increment, starting with the second anniversary, over six years (as a percent) 20.00%    
Common stock reserved for issuance upon exercise of stock options (in shares) 5,100,000    
Stock-based compensation expense      
Pre-tax compensation expense $ 12,110 $ 10,579 $ 10,427
Tax benefit (4,687) (4,094) (4,014)
Restricted stock expense, net of tax 7,423 6,485 $ 6,413
Unrecognized compensation cost $ 31,300 $ 29,400  
Unrecognized compensation cost, period for recognition 3 years 9 months 18 days 3 years 8 months 12 days  
Unvested restricted stock activity      
Balance outstanding at the beginning of the period (in shares) 3,100,000 3,680,000 4,114,000
Forfeited (in shares) (85,000) (178,000) (84,000)
Vested (in shares) (946,000) (1,018,000) (1,045,000)
Granted (in shares) 682,000 616,000 695,000
Balance outstanding at the end of the period (in shares) 2,751,000 3,100,000 3,680,000
Weighted-Average Grant-Date Fair Value      
Balance at the beginning of the period (in dollars per share) $ 14.45 $ 12.50 $ 10.94
Forfeited (in dollars per share) 15.71 14.27 11.68
Vested (in dollars per share) 12.04 10.31 8.89
Granted (in dollars per share) 22.43 19.16 16.19
Balance at the end of the period (in dollars per share) $ 17.21 $ 14.45 $ 12.50