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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Total Allowance by Loan Segment (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | $ 2,541,000 | $ 2,589,000 | $ 2,589,000
Charged off | (205,000) | (102,000) | (1,151,000)
Recoveries | 96,000 |  | 247,000
Provision for loan losses | 173,000 | 360,000 | 856,000
Balance, end of year | 2,605,000 |  | 2,541,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 255,000 |  | 226,000
Individually evaluated for impairment, Related loan balance | 2,840,000 |  | 2,250,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 2,350,000 |  | 2,315,000
Collectively evaluated for impairment, Related loan balance | 296,577,000 |  | 296,870,000
Consumer |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 161,000 | 214,000 | 214,000
Charged off |  |  | (208,000)
Recoveries | 10,000 |  | 48,000
Provision for loan losses | 15,000 |  | 107,000
Balance, end of year | 186,000 |  | 161,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 52,000 |  | 22,000
Individually evaluated for impairment, Related loan balance | 248,000 |  | 138,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 134,000 |  | 139,000
Collectively evaluated for impairment, Related loan balance | 12,628,000 |  | 12,933,000
Residential Real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 864,000 | 1,061,000 | 1,061,000
Charged off | (12,000) |  | (589,000)
Recoveries |  |  | 2,000
Provision for loan losses | (35,000) |  | 390,000
Balance, end of year | 817,000 |  | 864,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Related loan balance | 1,071,000 |  | 854,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 817,000 |  | 864,000
Collectively evaluated for impairment, Related loan balance | 80,496,000 |  | 81,783,000
Indirect |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 988,000 | 774,000 | 774,000
Charged off | (166,000) |  | (341,000)
Recoveries | 80,000 |  | 183,000
Provision for loan losses | 123,000 |  | 372,000
Balance, end of year | 1,025,000 |  | 988,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 1,025,000 |  | 988,000
Collectively evaluated for impairment, Related loan balance | 115,800,000 |  | 116,698,000
Commercial |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 241,000 | 237,000 | 237,000
Charged off | (27,000) |  |
Recoveries | 6,000 |  | 14,000
Provision for loan losses | 29,000 |  | (10,000)
Balance, end of year | 249,000 |  | 241,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 203,000 |  | 204,000
Individually evaluated for impairment, Related loan balance | 287,000 |  | 204,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 46,000 |  | 37,000
Collectively evaluated for impairment, Related loan balance | 14,217,000 |  | 14,080,000
Construction |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 4,000 | 12,000 | 12,000
Provision for loan losses |  |  | (8,000)
Balance, end of year | 4,000 |  | 4,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 4,000 |  | 4,000
Collectively evaluated for impairment, Related loan balance | 2,090,000 |  | 2,317,000
Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 283,000 | $ 291,000 | 291,000
Charged off |  |  | (13,000)
Provision for loan losses | 41,000 |  | 5,000
Balance, end of year | 324,000 |  | 283,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Related loan balance | 1,234,000 |  | 1,054,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 324,000 |  | 283,000
Collectively evaluated for impairment, Related loan balance | $ 71,346,000 |  | $ 69,059,000

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