INVESTMENTS SECURITIES AVAILABLE-FOR-SALE (Details) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized Cost Basis | $ 49,922 | $ 51,765 | $ 60,671 |
| Gross Unrealized Gains | 239 | 410 | 1,092 |
| Gross Unrealized Losses | 499 | 772 | 334 |
| Fair Value | 49,662 | 51,403 | 61,429 |
| State and municipal | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized Cost Basis | 11,453 | 20,118 | 20,726 |
| Gross Unrealized Gains | 144 | 272 | 745 |
| Gross Unrealized Losses | 62 | 135 | 17 |
| Fair Value | 11,535 | 20,255 | 21,454 |
| Asset-backed securities | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized Cost Basis | 6,116 | 6,512 | 7,524 |
| Gross Unrealized Gains | 0 | 0 | 30 |
| Gross Unrealized Losses | 68 | 141 | 37 |
| Fair Value | 6,048 | 6,371 | 7,517 |
| Government mortgage-backed securities | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized Cost Basis | 32,353 | 25,135 | 32,421 |
| Gross Unrealized Gains | 95 | 138 | 317 |
| Gross Unrealized Losses | 369 | 496 | 280 |
| Fair Value | $ 32,079 | $ 24,777 | $ 32,458 |