Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION Nonvested Activity (Details)

v3.8.0.1
SHARE-BASED COMPENSATION Nonvested Activity (Details) - Restricted Stock - $ / shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
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) 503,407    
Granted (in shares) 297,256 342,913 193,668
Vested (in shares) (381,017)    
Forfeited (in shares) (36,773)    
Non-vested at end of period (in shares) 382,873 503,407  
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) $ 14.60    
Granted (in dollars per share) 11.44 $ 10.56 $ 20.82
Vested (in dollars per share) 14.36    
Forfeited (in dollars per share) 11.46    
Non-vested at end of period (in dollars per share) $ 12.68 $ 14.60  
Director      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Granted (in shares) 30,853    
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) $ 11.67    
Employee      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Granted (in shares) 266,403    
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) $ 11.44