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FAIR VALUE (Tables) | 9 Months Ended
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Sep. 30, 2021
FAIR VALUE |
Fair Value Measured on a Recurring Basis | A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following tables set forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis. There were no transfers between any of the levels for the periods presented. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Total Fair
(000’s omitted) |  | Level 1 |  | Level 2 |  | Level 3 |  | Value
Available-for-sale investment securities: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. Treasury and agency securities | ​ | $ | 3,293,134 | ​ | $ | 100,126 | ​ | $ | 0 | ​ | $ | 3,393,260
Obligations of state and political subdivisions | ​ |  | 0 | ​ |  | 421,965 | ​ |  | 0 | ​ |  | 421,965
Government agency mortgage-backed securities | ​ |  | 0 | ​ |  | 510,676 | ​ |  | 0 | ​ |  | 510,676
Corporate debt securities | ​ |  | 0 | ​ |  | 8,078 | ​ |  | 0 | ​ |  | 8,078
Government agency collateralized mortgage obligations | ​ |  | 0 | ​ |  | 24,392 | ​ |  | 0 | ​ |  | 24,392
Total available-for-sale investment securities | ​ |  | 3,293,134 | ​ |  | 1,065,237 | ​ |  | 0 | ​ |  | 4,358,371
Equity securities | ​ |  | 459 | ​ |  | 0 | ​ |  | 0 | ​ |  | 459
Mortgage loans held for sale | ​ | ​ | 0 | ​ | ​ | 117 | ​ | ​ | 0 | ​ | ​ | 117
Commitments to originate real estate loans for sale | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 45 | ​ | ​ | 45
Forward sales commitments | ​ | ​ | 0 | ​ | ​ | 53 | ​ | ​ | 0 | ​ | ​ | 53
Interest rate swap agreements asset | ​ |  | 0 | ​ |  | 335 | ​ |  | 0 | ​ |  | 335
Interest rate swap agreements liability | ​ |  | 0 | ​ |  | (5) | ​ |  | 0 | ​ |  | (5)
Total | ​ | $ | 3,293,593 | ​ | $ | 1,065,737 | ​ | $ | 45 | ​ | $ | 4,359,375
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Total Fair
(000’s omitted) |  | Level 1 |  | Level 2 |  | Level 3 |  | Value
Available-for-sale investment securities: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. Treasury and agency securities | ​ | $ | 2,359,912 | ​ | $ | 141,470 | ​ | $ | 0 | ​ | $ | 2,501,382
Obligations of state and political subdivisions | ​ |  | 0 | ​ |  | 475,660 | ​ |  | 0 | ​ |  | 475,660
Government agency mortgage-backed securities | ​ |  | 0 | ​ |  | 522,638 | ​ |  | 0 | ​ |  | 522,638
Corporate debt securities | ​ |  | 0 | ​ |  | 4,635 | ​ |  | 0 | ​ |  | 4,635
Government agency collateralized mortgage obligations | ​ |  | 0 | ​ |  | 43,577 | ​ |  | 0 | ​ |  | 43,577
Total available-for-sale investment securities | ​ |  | 2,359,912 | ​ |  | 1,187,980 | ​ |  | 0 | ​ |  | 3,547,892
Equity securities | ​ |  | 445 | ​ |  | 0 | ​ |  | 0 | ​ |  | 445
Mortgage loans held for sale | ​ |  | 0 | ​ |  | 1,622 | ​ |  | 0 | ​ |  | 1,622
Commitments to originate real estate loans for sale | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 14 | ​ | ​ | 14
Forward sales commitments | ​ | ​ | 0 | ​ | ​ | 2 | ​ | ​ | 0 | ​ | ​ | 2
Interest rate swap agreements asset | ​ |  | 0 | ​ |  | 1,572 | ​ |  | 0 | ​ |  | 1,572
Interest rate swap agreements liability | ​ |  | 0 | ​ |  | (1,074) | ​ | ​ | 0 | ​ |  | (1,074)
Total | ​ | $ | 2,360,357 | ​ | $ | 1,190,102 | ​ | $ | 14 | ​ | $ | 3,550,473
Assets and Liabilities Measured on a Non-Recurring Basis | The fair value information of assets and liabilities measured on a non-recurring basis presented below is not as of the period-end, but rather as of the date the fair value adjustment was recorded closest to the date presented. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | December 31, 2020
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​ | Total Fair |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ | Total Fair
(000's omitted) | ​ | Level 1 | ​ | Level 2 | ​ | Level 3 | ​ | Value | ​ | Level 1 | ​ | Level 2 | ​ | Level 3 | ​ | Value
Individually assessed loans | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 18,794 |  | $ | 18,794 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 25,063 |  | $ | 25,063
Other real estate owned | ​ |  | 0 | ​ |  | 0 | ​ |  | 891 |  |  | 891 | ​ |  | 0 | ​ |  | 0 | ​ |  | 883 |  |  | 883
Mortgage servicing rights | ​ |  | 0 | ​ |  | 0 | ​ |  | 794 |  |  | 794 | ​ |  | 0 | ​ |  | 0 | ​ |  | 682 |  |  | 682
Contingent consideration | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 2,900 | ​ | ​ | 2,900 | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 0
Total | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 23,379 |  | $ | 23,379 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 26,628 |  | $ | 26,628
Significant Unobservable Inputs, Fair Value Valuation Techniques | The Company determines fair values based on quoted market values, where available, estimates of present values, or other valuation techniques. Those techniques are significantly affected by the assumptions used, including, but not limited to, the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, may not be realized in immediate settlement of the instrument. The significant unobservable inputs used in the determination of fair value of assets classified as Level 3 on a recurring or non-recurring basis are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Significant | ​
​ |  | ​ | ​ |  | ​ |  | ​ |  | Unobservable Input |
​ | ​ | Fair Value at | ​ | ​ | ​ | ​ | ​ | Range | ​
(000's omitted, except per loan data) | ​ | September 30, 2021 | ​ | Valuation Technique | ​ | Significant Unobservable Inputs |  | (Weighted Average) | ​
Individually assessed loans | ​ | $ | 18,794 |  | Fair value of collateral |  | Estimated cost of disposal/market adjustment |  | ​ | 9.0% - 78.7% (53.5%) | ​
Other real estate owned | ​ |  | 891 |  | Fair value of collateral |  | Estimated cost of disposal/market adjustment |  | ​ | 9.0% - 46.7% (33.7%) | ​
Commitments to originate real estate loans for sale | ​ |  | 45 |  | Discounted cash flow |  | Embedded servicing value |  | ​ | 1.0 | %
Mortgage servicing rights | ​ |  | 794 |  | Discounted cash flow |  | Weighted average constant prepayment rate |  | ​ | 15.2% - 24.9% (16.6%) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted average discount rate | ​ | ​ | 2.3% - 2.8% (2.7%) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Adequate compensation | ​ | $ | 7/loan | ​
Contingent consideration | ​ | ​ | 2,900 | ​ | Discounted cash flow | ​ | Discount rate | ​ | ​ | 0.8% - 1.1% (1.0%) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Probability adjusted level of retained | ​ | ​ | $2.3 million - $5.8 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | revenue | ​ | ​ | million | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ |  | ​ |  | Significant |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Unobservable Input | ​
​ | ​ | Fair Value at | ​ | ​ | ​ | ​ | ​ | Range | ​
(000's omitted, except per loan data) | ​ | December 31, 2020 | ​ | Valuation Technique | ​ | Significant Unobservable Inputs | ​ | (Weighted Average) |
Individually assessed loans | ​ | $ | 25,063 |  | Fair value of collateral |  | Estimated cost of disposal/market adjustment |  | ​ | 9.0% - 78.4% (52.7%) | ​
Other real estate owned | ​ |  | 883 |  | Fair value of collateral |  | Estimated cost of disposal/market adjustment |  | ​ | 11.3% - 52.9% (34.0%) | ​
Commitments to originate real estate loans for sale | ​ | ​ | 14 | ​ | Discounted cash flow | ​ | Embedded servicing value | ​ | ​ | 1.0 | %
Mortgage servicing rights | ​ |  | 682 |  | Discounted cash flow |  | Weighted average constant prepayment rate |  | ​ | 9.8% - 18.8% (17.6%) | ​
​ | ​ |  |  |  |  |  | Weighted average discount rate |  | ​ | 1.7% - 2.2% (2.1%) | ​
​ | ​ | ​ | ​ | ​ | ​ |  | Adequate compensation | ​ | $ | 7/loan | ​
Carrying Amounts and Estimated Fair Values of Other Financial Instruments | Certain financial instruments and all nonfinancial instruments are excluded from fair value disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The carrying amounts and estimated fair values of the Company’s other financial instruments that are not accounted for at fair value at September 30, 2021 and December 31, 2020 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | December 31, 2020
​ |  | Carrying |  | Fair |  | Carrying |  | Fair
(000's omitted) | ​ | Value | ​ | Value | ​ | Value | ​ | Value
Financial assets: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Net loans | ​ | $ | 7,233,083 | ​ | $ | 7,608,456 | ​ | $ | 7,355,083 | ​ | $ | 7,655,044
Financial liabilities: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Deposits | ​ |  | 12,723,821 | ​ |  | 12,730,674 | ​ |  | 11,224,974 | ​ |  | 11,239,628
Securities sold under agreement to repurchase, short-term | ​ |  | 316,763 | ​ |  | 316,763 | ​ |  | 284,008 | ​ |  | 284,008
Other Federal Home Loan Bank borrowings | ​ |  | 2,912 | ​ |  | 2,956 | ​ |  | 6,658 | ​ |  | 6,758
Subordinated notes payable | ​ |  | 3,283 | ​ |  | 3,283 | ​ |  | 3,303 | ​ |  | 3,303
Subordinated debt held by unconsolidated subsidiary trusts | ​ |  | 0 | ​ |  | 0 | ​ |  | 77,320 | ​ |  | 77,320
​

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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