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STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2018
STOCK-BASED COMPENSATION  
Schedule of stock-based employee compensation expense
    Three months ended  
    March 31,  
(in thousands)   2018     2017  
Pre-tax expense   $ 2,555     $ 2,687  
After tax expense   $ 1,929     $ 1,706  
Schedule of changes in non-vested restricted shares
    Shares     Weighted Average
Grant-Date Fair
Value
 
Non-vested shares at December 31, 2017     2,736,365     $ 14.50  
Granted     522,800       25.13  
Vested     (731,008 )     13.02  
Forfeited     (24,887 )     16.14  
Non-vested shares at March 31, 2018     2,503,270     $ 17.14