Quarterly report pursuant to Section 13 or 15(d)

SHARE BASED COMPENSATION - Narrative (Details)

v3.8.0.1
SHARE BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grants in period (in shares) 0  
Share-based compensation $ 3,604 $ 3,479
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of shares vested $ 4,700 3,200
2013 Employee Stock Purchase Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares issued under ESPP (in shares) 125,049  
Number of shares available for grant (in shares) 336,763  
Share-based compensation $ 3,600 $ 3,500