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City Holding Company (Parent Company Only) Financial Information (Condensed Statements Of Cash Flows) (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
Operating Activities |  |  |  |  |  |  |  |  |  |  |
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
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Unrealized and Realized Investment Gains (Losses) |  |  |  |  |  |  |  |  | (957) | 90 | (4,476)
Deferred income tax expense (benefit) |  |  |  |  |  |  |  |  | 4,939 | (1,244) | 14,909
Stock based compensation |  |  |  |  |  |  |  |  | 2,516 | 2,151 | 2,097
Asset write down |  |  |  |  |  |  |  |  | 297 | 491 | 0
Change in other assets |  |  |  |  |  |  |  |  | (7,489) | 480 | (2,102)
Change in other liabilities |  |  |  |  |  |  |  |  | 6,712 | 4,308 | 2,953
Net Cash Provided by Operating Activities |  |  |  |  |  |  |  |  | 98,643 | 72,648 | 76,126
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Proceeds from sales of available for sale securities |  |  |  |  |  |  |  |  | 70,404 | 0 | 5,776
Payments for (Proceeds from) Loans and Leases |  |  |  |  |  |  |  |  | (30,146) | (95,284) | (85,489)
Net Cash Used in Investing Activities |  |  |  |  |  |  |  |  | (103,301) | (163,541) | (171,688)
Financing Activities |  |  |  |  |  |  |  |  |  |  |
Repayment of long-term debt |  |  |  |  |  |  |  |  | 0 | (16,495) | 0
Proceeds from sale of capital securities |  |  |  |  |  |  |  |  | 0 | 495 | 0
Dividends paid |  |  |  |  |  |  |  |  | (35,547) | (29,583) | (27,120)
Issuance of common stock |  |  |  |  |  |  |  |  | 0 | 0 | 28,408
Purchases of treasury stock |  |  |  |  |  |  |  |  | (19,431) | (20,271) | 0
Exercise of stock options |  |  |  |  |  |  |  |  | 526 | 1,164 | 597
Net Cash Provided by Financing Activities |  |  |  |  |  |  |  |  | 21,811 | 131,376 | 89,931
Increase (Decrease) in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | 17,153 | 40,483 | (5,631)
Cash and cash equivalents at beginning of period |  |  |  | 122,991 |  |  |  | 82,508 | 122,991 | 82,508 | 88,139
Cash and Cash Equivalents at End of Period | 140,144 |  |  |  | 122,991 |  |  |  | 140,144 | 122,991 | 82,508
Parent Company |  |  |  |  |  |  |  |  |  |  |
Operating Activities |  |  |  |  |  |  |  |  |  |  |
Net Income Available to Common Shareholders |  |  |  |  |  |  |  |  | 89,352 | 70,002 | 54,310
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Unrealized and Realized Investment Gains (Losses) |  |  |  |  |  |  |  |  | (425) | (208) | (200)
Deferred income tax expense (benefit) |  |  |  |  |  |  |  |  | 173 | (88) | 1,347
Depreciation, Amortization and Accretion, Net |  |  |  |  |  |  |  |  | 3 | 1 | 1
Stock based compensation |  |  |  |  |  |  |  |  | 2,516 | 2,151 | 2,097
Asset write down |  |  |  |  |  |  |  |  | 0 | 193 | 0
Change in other assets |  |  |  |  |  |  |  |  | 2,696 | 2,668 | (405)
Change in other liabilities |  |  |  |  |  |  |  |  | (2,060) | (1,816) | (1,660)
Equity In Undistributed Earnings Of Subsidiaries |  |  |  |  |  |  |  |  | (32,297) | (23,171) | (25,199)
Net Cash Provided by Operating Activities |  |  |  |  |  |  |  |  | 59,958 | 49,732 | 30,291
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Proceeds from sales of available for sale securities |  |  |  |  |  |  |  |  | 6 | 0 | 200
Payments for (Proceeds from) Loans and Leases |  |  |  |  |  |  |  |  | 38 | 0 | 0
Net Cash Used in Investing Activities |  |  |  |  |  |  |  |  | 44 | (23,452) | 200
Financing Activities |  |  |  |  |  |  |  |  |  |  |
Repayment of long-term debt |  |  |  |  |  |  |  |  | 0 | (16,495) | 0
Proceeds from sale of capital securities |  |  |  |  |  |  |  |  | 0 | 495 | 0
Dividends paid |  |  |  |  |  |  |  |  | (35,547) | (29,583) | (27,120)
Issuance of common stock |  |  |  |  |  |  |  |  | 0 | 0 | 28,408
Purchases of treasury stock |  |  |  |  |  |  |  |  | (19,431) | (20,271) | 0
Exercise of stock options |  |  |  |  |  |  |  |  | 526 | 1,164 | 732
Net Cash Provided by Financing Activities |  |  |  |  |  |  |  |  | (54,452) | (64,690) | 2,020
Increase (Decrease) in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | 5,550 | (38,410) | 32,511
Cash and cash equivalents at beginning of period |  |  |  | $ 20,621 |  |  |  | $ 59,031 | 20,621 | 59,031 | 26,520
Cash and Cash Equivalents at End of Period | $ 26,171 |  |  |  | $ 20,621 |  |  |  | $ 26,171 | 20,621 | 59,031
Farmers Deposit Bancorp, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash Acquired from Acquisition |  |  |  |  |  |  |  |  |  |  | 0
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  | (20,691) |
Farmers Deposit Bancorp, Inc. [Member] | Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash Acquired from Acquisition |  |  |  |  |  |  |  |  |  | 946 |
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  | (23,954) |
Poage Bankshares, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash Acquired from Acquisition |  |  |  |  |  |  |  |  |  |  | $ 0
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  | 32,917 |
Poage Bankshares, Inc. [Member] | Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash Acquired from Acquisition |  |  |  |  |  |  |  |  |  | 518 |
Investing Activities |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  | $ 502 |

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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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