Quarterly report pursuant to Section 13 or 15(d)

SHARE BASED COMPENSATION - Narrative (Details)

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SHARE BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grants in period (in shares) 0  
Share-based compensation $ 698 $ 807
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of shares vested 2,900 2,500
2013 Employee Stock Purchase Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation $ 700 $ 800