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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, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | $ 957 | $ (90) | $ 4,476
Interest expense | $ 8,701 | $ 9,444 | $ 9,327 | $ 8,867 | $ 7,917 | $ 7,171 | $ 5,607 | $ 4,997 | 36,339 | 25,692 | 16,805
Merger related costs |  |  |  |  |  |  |  |  | 797 | 13,257 | 0
Income tax benefit | 6,319 | 6,193 | 5,813 | 5,810 | 2,646 | 5,606 | 5,358 | 4,405 | 24,135 | 18,015 | 36,435
Net Income Available to Common Shareholders | $ 22,611 | $ 22,371 | $ 22,751 | $ 21,619 | $ 10,713 | $ 20,692 | $ 20,979 | $ 17,616 | 89,352 | 70,002 | 54,310
Total Comprehensive Income |  |  |  |  |  |  |  |  | 109,674 | 63,821 | 56,677
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend Income, Operating |  |  |  |  |  |  |  |  | 58,000 | 50,000 | 30,000
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | 425 | 208 | 200
Other income |  |  |  |  |  |  |  |  | 151 | 130 | 115
Income |  |  |  |  |  |  |  |  | 58,576 | 50,338 | 30,315
Interest expense |  |  |  |  |  |  |  |  | 182 | 880 | 765
Merger related costs |  |  |  |  |  |  |  |  | 0 | 1,899 | 0
Other expenses |  |  |  |  |  |  |  |  | 1,794 | 1,842 | 1,636
Expenses |  |  |  |  |  |  |  |  | 1,976 | 4,621 | 2,401
Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 56,600 | 45,717 | 27,914
Income tax benefit |  |  |  |  |  |  |  |  | (455) | (1,114) | (1,197)
Income Before Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 57,055 | 46,831 | 29,111
Equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | 32,297 | 23,171 | 25,199
Net Income Available to Common Shareholders |  |  |  |  |  |  |  |  | 89,352 | 70,002 | 54,310
Total Comprehensive Income |  |  |  |  |  |  |  |  | $ 109,674 | $ 63,821 | $ 56,677

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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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