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ALLOWANCE FOR LOAN LOSSES: ALLOWANCE FOR LOAN LOSSES: (Details 4) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | $ 7,034 | $ 8,565 | $ 9,860
Added | 1,279 | 613 | 492
Charged Off | (153) | (430) | (391)
Payments | (3,354) | (1,714) | (1,396)
December 31, | 4,806 | 7,034 | 8,565
Commercial |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 2,709 | 3,386 | 3,584
Added | 0 | 0 | 0
Charged Off | 0 | 0 | 0
Payments | (2,564) | (677) | (198)
December 31, | 145 | 2,709 | 3,386
Residential |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 3,611 | 4,447 | 5,593
Added | 984 | 227 | 123
Charged Off | (16) | (289) | (321)
Payments | (536) | (774) | (948)
December 31, | 4,043 | 3,611 | 4,447
Consumer |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 714 | 732 | 683
Added | 295 | 386 | 369
Charged Off | (137) | (141) | (70)
Payments | (254) | (263) | (250)
December 31, | $ 618 | $ 714 | $ 732

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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