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GOODWILL AND OTHER INTANGIBLES - Gross Amount and Accumulated Amortization of Other Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Finite Lived Intangible Assets [Line Items] |  |  |
Net carrying amount | $ 19,073 |  | $ 21,118
Core Deposits [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Gross amount | 87,544 |  | 87,544
Accumulated amortization | (68,557) |  | (66,644)
Net carrying amount | $ 18,987 |  | 20,900
Remaining amortization period (in years) | 6 years 9 months 18 days | 7 years |
Customer Relationships [Member] | Credit Card [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Gross amount | $ 3,800 |  | 3,800
Accumulated amortization | (3,714) |  | (3,595)
Net carrying amount | $ 86 |  | 205
Remaining amortization period (in years) | 4 months 24 days | 8 months 12 days |
Insurance Customer Relationship Intangible [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Gross amount | $ 0 |  | 1,067
Accumulated amortization | 0 |  | (1,054)
Net carrying amount | $ 0 |  | $ 13
Remaining amortization period (in years) |  | 1 month 6 days |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 + Details
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