Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION Nonvested Activity (Details)

v3.7.0.1
SHARE-BASED COMPENSATION Nonvested Activity (Details) - Restricted Stock - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Non-vested at beginning of period (in shares) 311,372    
Granted (in shares) 342,913 193,668 127,050
Vested (in shares) (145,022)    
Forfeited (in shares) (5,856)    
Non-vested at end of period (in shares) 503,407 311,372  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share) [Roll Forward]      
Non-vested at beginning of period (in dollars per share) $ 22.58    
Granted (in dollars per share) 10.56 $ 20.82 $ 29.23
Vested (in dollars per share) 22.08    
Forfeited (in dollars per share) 17.21    
Non-vested at end of period (in dollars per share) $ 14.60 $ 22.58  
Director      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Granted (in shares) 40,663    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share) [Roll Forward]      
Granted (in dollars per share) $ 10.59    
Employee      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Granted (in shares) 302,250    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share) [Roll Forward]      
Granted (in dollars per share) $ 10.56