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STOCK-BASED COMPENSATION - Restricted Stock (Details) - Restricted Stock [Member]
shares in Thousands
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Number of Awards  
Granted | shares 189
Vested | shares (4)
Unvested at end of period | shares 185
Weighted Average Award Date Fair Value  
Granted | $ / shares $ 5.00
Vested | $ / shares 5.00
Unvested at end of period | $ / shares $ 5.00
Weighted Average Remaining Contractual Life in Years  
Balance at end of period 3 years 10 months 24 days