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City Holding Company (Parent Company Only) Financial Information (Condensed Statements Of Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | $ (801) | $ 957 | $ (90)
Interest expense | $ 4,318 | $ 5,254 | $ 6,242 | $ 7,801 | $ 8,701 | $ 9,444 | $ 9,327 | $ 8,867 | 23,615 | 36,339 | 25,692
Merger related costs |  |  |  |  |  |  |  |  | 0 | 797 | 13,257
Income tax benefit | 4,565 | 5,098 | 4,732 | 7,322 | 6,319 | 6,193 | 5,813 | 5,810 | 21,717 | 24,135 | 18,015
Net Income (Loss) Attributable to Parent | $ 22,222 | $ 20,126 | $ 18,251 | $ 28,996 | $ 22,611 | $ 22,371 | $ 22,751 | $ 21,619 | 89,595 | 89,352 | 70,002
Total Comprehensive Income |  |  |  |  |  |  |  |  | 114,988 | 109,674 | 63,821
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend Income, Operating |  |  |  |  |  |  |  |  | 74,300 | 58,000 | 50,000
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | (1,018) | 425 | 208
Other income |  |  |  |  |  |  |  |  | 183 | 151 | 130
Income |  |  |  |  |  |  |  |  | 73,465 | 58,576 | 50,338
Interest expense |  |  |  |  |  |  |  |  | 100 | 182 | 880
Merger related costs |  |  |  |  |  |  |  |  | 0 | 0 | 1,899
Other expenses |  |  |  |  |  |  |  |  | 1,810 | 1,794 | 1,842
Expenses |  |  |  |  |  |  |  |  | 1,910 | 1,976 | 4,621
Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 71,555 | 56,600 | 45,717
Income tax benefit |  |  |  |  |  |  |  |  | (760) | (455) | (1,114)
Income Before Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 72,315 | 57,055 | 46,831
Equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | 17,280 | 32,297 | 23,171
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 89,595 | 89,352 | 70,002
Total Comprehensive Income |  |  |  |  |  |  |  |  | $ 114,988 | $ 109,674 | $ 63,821

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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