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GOODWILL AND INTANGIBLE ASSETS - Schedule of Estimated amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]        
2019 $ 788      
2020 687      
2021 598      
2022 513      
2023 429      
Thereafter 895      
Total $ 3,910 $ 356 $ 458 $ 207