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FAIR VALUE MEASUREMENTS - Unobservable Inputs Recurring (Details) $ in Thousands | Jun. 30, 2019 USD ($) $ / contract | Dec. 31, 2018 USD ($) $ / contract
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Quantitative information about the significant unobservable inputs within Level 3 |  |
Trading security | $ 11,210 | $ 11,212
Level 3 | Recurring |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Trading security | 11,210 | 11,212
Total | $ 31,421 | $ 26,624
Level 3 | Recurring | Discounted Cash Flow | Discount rate |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Trading security, significant unobservable input value | 0.0228 | 0.0307
Level 3 | Recurring | Commitments to lend |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Derivative asset | $ 9,005 | $ 3,927
Level 3 | Recurring | Commitments to lend | Historical Trend | Closing Ratio |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Derivative asset, significant unobservable input value | 0.7248 | 0.8236
Level 3 | Recurring | Commitments to lend | Pricing Model | Origination Costs, per loan |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Derivative asset, significant unobservable input value | $ / contract | 3,137 | 3,063
Level 3 | Recurring | Capitalized servicing rights |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Servicing asset | $ 11,206 | $ 11,485
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Discount rate |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Servicing asset, significant unobservable input value | 0.0999 | 0.1000
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Constant prepayment rate (CPR) |  |
Quantitative information about the significant unobservable inputs within Level 3 |  |
Servicing asset, significant unobservable input value | 0.1274 | 0.0930

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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