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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Impaired financing receivables (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | $ 462,000 | $ 294,000
Unpaid Principal Balance with specific reserves | 462,000 | 294,000
Interest Income Recognized with specific reserves | 1,000 | 15,000
Specific Reserve with specific reserves | 255,000 | 226,000
Recorded Investment | 512,000 | 347,000
Recorded Investment with no specific reserve | 2,791,000 | 2,435,000
Unpaid Principal Balance with no specific reserve | 3,869,000 | 3,569,000
Interest Income Recognized with no specific reserve | 11,000 | 45,000
Specific Reserve | 255,000 |
Average Recorded Investment with no specific reserve | 3,556,000 | 3,179,000
Consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 175,000 | 89,000
Unpaid Principal Balance with specific reserves | 175,000 | 89,000
Interest Income Recognized with specific reserves | 1,000 | 3,000
Specific Reserve with specific reserves | 52,000 | 22,000
Recorded Investment | 223,000 | 136,000
Recorded Investment with no specific reserve | 137,000 | 96,000
Unpaid Principal Balance with no specific reserve | 137,000 | 300,000
Interest Income Recognized with no specific reserve |  | 2,000
Average Recorded Investment with no specific reserve | 75,000 | 50,000
Indirect |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve | 185,000 | 116,000
Unpaid Principal Balance with no specific reserve | 185,000 | 457,000
Specific Reserve | 255,000 |
Commercial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 287,000 | 204,000
Unpaid Principal Balance with specific reserves | 287,000 | 204,000
Interest Income Recognized with specific reserves |  | 12,000
Specific Reserve with specific reserves | 203,000 | 204,000
Recorded Investment | 289,000 | 211,000
Specific Reserve | 203,000 |
Commercial Real Estate |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve | 1,234,000 | 1,267,000
Unpaid Principal Balance with no specific reserve | 1,544,000 | 1,267,000
Interest Income Recognized with no specific reserve | 10,000 | 39,000
Average Recorded Investment with no specific reserve | 1,305,000 | 1,148,000
Residential Real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve | 1,235,000 | 956,000
Unpaid Principal Balance with no specific reserve | 2,004,000 | 1,545,000
Interest Income Recognized with no specific reserve | 1,000 | 4,000
Average Recorded Investment with no specific reserve | $ 2,176,000 | $ 1,981,000

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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