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FAIR VALUE - Qualitative Information Regarding Fair Value Measurements for Level 3 Financial Instruments (Detail) | 12 Months Ended
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Dec. 31, 2017
Loans [Member] |
Fair Value Option Quantitative Disclosures [Line Items] |
Method | Income, Market, Comparable Sales, Discounted Cash Flows
Valuation technique | External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors
Other Real Estate Owned [Member] |
Fair Value Option Quantitative Disclosures [Line Items] |
Method | Income, Market, Comparable Sales, Discounted Cash Flows
Valuation technique | External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors
Mortgage Servicing Rights [Member] |
Fair Value Option Quantitative Disclosures [Line Items] |
Method | Discounted Cash Flows
Valuation technique | Weighted-average prepayment rate of 6.30%; weighted average discount rate of 11.23%.

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- Definition Description of the valuation processes in place for fair value measurements categorized within Level 3 of the fair value hierarchy. + 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 (f) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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