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FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) security | Mar. 31, 2017 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Junior subordinated debentures re-price period (in days) | 90 days |
Loans Held for Sale |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Gains (losses) in fair value of loans held for sale included in earnings | $ | $ (2,500) | $ 593
Trading Security |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Number of securities in the portfolio (security) | security | 1 |

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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 + Details
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