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FAIR VALUE MEASUREMENTS AND FAIR VALUES OF FINANCIAL INSTRUMENTS - Reconciliation of Activity for Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Level 3 - Servicing rights - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Servicing rights balance, beginning of period | $ 1,226 | $ 1,347 | $ 1,277 | $ 1,404
Originations of servicing rights | 328 | 46 | 403 | 66
Unrealized losses included in earnings | (270) | (71) | (396) | (148)
Servicing rights balance, end of period | $ 1,284 | $ 1,322 | $ 1,284 | $ 1,322

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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