Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED AND DEFERRED COMPENSATION - Summary of Compensation Expense and Stock Award Activity (Details)

v3.10.0.1
STOCK BASED AND DEFERRED COMPENSATION - Summary of Compensation Expense and Stock Award Activity (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Summary of compensation expense and stock award activity        
Stock-based compensation expense (in dollars) $ 3,767 $ 2,490 $ 8,976 $ 5,785
Restricted Stock [Member]        
Summary of compensation expense and stock award activity        
Restricted stock awards vested (includes performance-based awards) (in shares) 17,137 6,190 318,712 289,764
Non-vested shares [Member]        
Summary of compensation expense and stock award activity        
Non-vested shares granted (in shares) 0 0 306,164 416,500
Performance-based non-vested shares [Member]        
Summary of compensation expense and stock award activity        
Non-vested shares granted (in shares) 0 0 157,637 154,120