BORROWINGS (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Advances from Federal Home Loan Banks [Abstract]      
2019 $ 54,979    
2020 11,463    
2021 5,000    
2023 8,500    
Total $ 79,942 $ 68,022 $ 26,841