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SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 10, 2019
Aug. 15, 2019
Jun. 21, 2019
May 31, 2019
Mar. 22, 2019
Mar. 12, 2019
Jun. 15, 2018
May 18, 2018
Mar. 31, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Common Stock                          
Repurchase of common stock             $ 6,600 $ 16,000          
Treasury Stock, Shares, Acquired                 9,560 24,868 14,097 341,527  
Common stock, par value (in dollars per share)               $ 0.0001     $ 0.0001   $ 0.0001
Common stock price (in dollars per share)             $ 21.00            
Purchased shares             316,659            
Common stock, shares outstanding (in shares)                     2,385,787   2,381,149
Dividends [Abstract]                          
Dividend payable per share (in dollars per share)   $ 0.125   $ 0.125   $ 0.125              
Dividends paid $ 300   $ 300   $ 300                
Maximum                          
Common Stock                          
Common stock price (in dollars per share)               21.00          
Minimum                          
Common Stock                          
Common stock price (in dollars per share)               $ 18.50