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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Mortgage Banking (Details) - USD ($) $ in Thousands | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing loans for participants | $ 653,400 | $ 596,300 | $ 596,300
Contractually specified servicing fees | 1,600 |  | 1,300
Servicing Asset at Amortized Cost, Balance [Roll Forward] |  |  |
Balance at beginning of year | 3,353 | 3,001 |
Additions | 565 | 597 |
Amortization | (245) | (245) |
Balance at end of year | 3,673 | 3,353 | 3,353
Total residential loans included in held for sale loans | 5,523 | 23,988 | 23,988
Residential mortgages | Total residential real estate |  |  |
Servicing Asset at Amortized Cost, Balance [Roll Forward] |  |  |
Total residential loans included in held for sale loans | 5,400 | 24,000 | 24,000
Forward delivery commitments | 14,800 | 50,600 | $ 50,600
Adjustments to fair value of loans | 113 |  |
Sale of loans | 189,300 | 226,400 |
Net gains on sales of loans | $ 4,100 | $ 5,300 |

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- Definition Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1402 -Subsection Instruction 3 + Details
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- Definition Amount of gain (loss) on sale of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107425-111719 + Details
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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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