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FAIR VALUE MEASUREMENTS - Non-recurring Fair Value Measurements (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, fair value | $ 28,638 | $ 18,569
Impaired loans |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, fair value | 17,761 | 11,657
Capitalized servicing rights |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, fair value | 10,726 | 5,187
Other real estate owned |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, fair value | $ 151 | $ 1,725

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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