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ALLOWANCE FOR LOAN LOSSES: ALLOWANCE FOR LOAN LOSSES: Loans Modified as Troubled Debt Restructurings (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | $ 4,206 | $ 4,194 | $ 4,806
Added | 1,300 | 996 | 570
Charged Off | (111) | (164) | (105)
Payments | (596) | (820) | (1,077)
December 31, | 4,799 | 4,206 | 4,194
Commercial |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 0 | 11 | 145
Added | 407 | 0 | 0
Charged Off | 0 | 0 | 0
Payments | 0 | (11) | (134)
December 31, | 407 | 0 | 11
Residential |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 3,589 | 3,485 | 4,043
Added | 491 | 692 | 195
Charged Off | (29) | (6) | (24)
Payments | (365) | (582) | (729)
December 31, | 3,686 | 3,589 | 3,485
Consumer |  |  |
Financing Receivable, Impaired, Troubled Debt Restructuring [Roll Forward] |  |  |
January 1, | 617 | 698 | 618
Added | 402 | 304 | 375
Charged Off | (82) | (158) | (81)
Payments | (231) | (227) | (214)
December 31, | $ 706 | $ 617 | $ 698

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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 Reference 2: 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=121585226&loc=d3e18845-111554 + Details
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