City Holding Company (Parent Company Only) Financial Information (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Available-for-sale Securities	$ 1,178,789	$ 810,106
Net Loans	3,597,570	3,604,510
Fixed assets	76,925	76,965
Other assets	96,697	55,765
Total Assets	5,758,640	5,018,756
Liabilities
Deferred Tax Liabilities, Net	3,202
Other liabilities	106,160	69,568
Total Liabilities	5,057,534	4,360,773
Total Shareholders’ Equity	701,106	657,983	$ 600,764	$ 502,507
Total Liabilities and Shareholders’ Equity	5,758,640	5,018,756
Parent Company
Assets
Cash	22,335	26,171
Available-for-sale Securities	5,267	6,286
Investment in subsidiaries	681,744	638,490
Net Loans	624	663
Fixed assets	15	23
Other assets	932	643
Total Assets	710,917	672,276
Liabilities
Junior subordinated debentures	0	4,056
Dividends payable	9,145	9,293
Deferred Tax Liabilities, Net	298	534
Other liabilities	368	410
Total Liabilities	9,811	14,293
Total Shareholders’ Equity	701,106	657,983
Total Liabilities and Shareholders’ Equity	$ 710,917	$ 672,276