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VARIABLE INTEREST ENTITIES - Balances and Activity in Affordable Housing Partnerships (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Variable Interest Entity [Line Items] |  |  |
Fundings | $ 27,832 | $ 14,800 | $ 6,361
Income tax credits recognized |  | 3,400 | 9,600
Variable Interest Entity, Not Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Maximum loss exposure | 32,525 |  |
Maximum loss exposure | 27,977 | 32,525 |
Affordable Housing Fund Investment |  |  |
Variable Interest Entity [Line Items] |  |  |
Unfunded commitment | 18,300 |  |
Fundings | 16,086 | 9,143 | 4,102
Proportional amortization recognized | 5,253 | 3,521 | 2,010
Affordable Housing Fund Investment | Variable Interest Entity, Not Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Maximum loss exposure | 36,462 |  |
Aggregate funding commitment | 61,278 | 49,278 |
Total amount funded | 42,991 | 26,905 |
Unfunded commitment | 18,287 | 22,373 |
Maximum loss exposure | 43,209 | 36,462 |
Income tax credits recognized | $ 4,300 | $ 2,410 | $ 1,882

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- Definition Amount of amortization expense of investment in qualified affordable housing projects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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