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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, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment securities gains |  |  |  |  | $ 200 | $ 0 | $ 0 | $ 4,276 |  |  |
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | $ (298) |  |
Interest expense | $ 7,917 | $ 7,171 | $ 5,607 | $ 4,997 | 4,664 | 4,340 | 4,036 | 3,767 | 25,692 | $ 16,805 | $ 13,207
Merger related costs |  |  |  |  |  |  |  |  | 13,257 | 0 | 0
Income tax benefit | 2,646 | 5,606 | 5,358 | 4,405 | 14,972 | 7,003 | 6,812 | 7,647 | 18,015 | 36,435 | 25,083
Net Income Available to Common Shareholders | $ 10,713 | $ 20,692 | $ 20,979 | $ 17,616 | $ 9,669 | $ 13,932 | $ 14,685 | $ 16,026 | 70,002 | 54,310 | 52,128
Total Comprehensive Income |  |  |  |  |  |  |  |  | 63,821 | 56,677 | 48,948
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividends from subsidiaries |  |  |  |  |  |  |  |  | 50,000 | 30,000 | 8,600
Investment securities gains |  |  |  |  |  |  |  |  | 0 | 200 | 0
Equity Securities, FV-NI, Unrealized Loss |  |  |  |  |  |  |  |  | 208 |  |
Other income |  |  |  |  |  |  |  |  | 130 | 115 | 320
Income |  |  |  |  |  |  |  |  | 50,338 | 30,315 | 8,920
Interest expense |  |  |  |  |  |  |  |  | 880 | 765 | 683
Merger related costs |  |  |  |  |  |  |  |  | 1,899 |  |
Other expenses |  |  |  |  |  |  |  |  | 1,842 | 1,636 | 1,957
Expenses |  |  |  |  |  |  |  |  | 4,621 | 2,401 | 2,640
Income Before Income Tax Benefit and Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 45,717 | 27,914 | 6,280
Income tax benefit |  |  |  |  |  |  |  |  | (1,114) | (1,197) | (1,096)
Income Before Equity in Undistributed Net Income of Subsidiaries |  |  |  |  |  |  |  |  | 46,831 | 29,111 | 7,376
Equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | 23,171 | 25,199 | 44,752
Net Income Available to Common Shareholders |  |  |  |  |  |  |  |  | 70,002 | 54,310 | 52,128
Total Comprehensive Income |  |  |  |  |  |  |  |  | $ 63,821 | $ 56,677 | $ 48,948

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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=84229725&loc=d3e1043-128460 + Details
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