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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of goodwill or intangible assets |  |  | $ 0 |
Intangible assets, amortization expense | $ 3,381 | $ 4,053 | $ 10,679 | $ 12,676
Core Deposits | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Intangible assets, amortization period (years) |  |  | 4 years |
Core Deposits | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Intangible assets, amortization period (years) |  |  | 10 years |
Other amortizable intangibles | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Intangible assets, amortization period (years) |  |  | 4 years |
Other amortizable intangibles | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Intangible assets, amortization period (years) |  |  | 10 years |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 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)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + 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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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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