Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
STOCK BASED AND DEFERRED COMPENSATION - Summary of Compensation Expense and Stock Award Activity (Details) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Summary of compensation expense and stock award activity        
Stock-based compensation expense (in dollars) $ 2,555 $ 3,835 $ 7,313 $ 8,465
Stock options exercised (in shares) 3,200 200 14,400 143,640
Restricted Stock [Member]        
Summary of compensation expense and stock award activity        
Restricted stock awards vested (includes performance-based awards) (in shares) 29,465 44,134 334,550 370,204
Non-Vested Shares [Member]        
Summary of compensation expense and stock award activity        
Non-vested shares granted (in shares) 0 15,000 493,865 403,787
Performance Shares [Member]        
Summary of compensation expense and stock award activity        
Non-vested shares granted (in shares) 0 0 66,698 66,187