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PREMISES AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2020
PREMISES AND EQUIPMENT |
PREMISES AND EQUIPMENT | NOTE E: PREMISES AND EQUIPMENT Premises and equipment consist of the following at December 31: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(000’s omitted) |  | 2020 |  | 2019
Land and land improvements | ​ | $ | 29,070 | ​ | $ | 26,301
Bank premises | ​ |  | 149,217 | ​ |  | 141,905
Equipment and construction in progress | ​ |  | 99,239 | ​ |  | 89,819
Operating lease right-of-use assets | ​ |  | 34,908 | ​ |  | 39,895
Premises and equipment, gross | ​ |  | 312,434 | ​ |  | 297,920
Accumulated depreciation | ​ |  | (146,779) | ​ |  | (133,282)
Premises and equipment, net | ​ | $ | 165,655 | ​ | $ | 164,638
​

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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