City Holding Company (Parent Company Only) Financial Information (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Securities available-for-sale	$ 810,106	$ 721,796
Net Loans	3,604,510	3,571,642
Fixed assets	76,965	78,383
Other assets	55,765	46,951
Total Assets	5,018,756	4,899,012
Liabilities
Deferred Tax Liabilities, Net	9,825	3,555
Other liabilities	69,568	56,725
Total Liabilities	4,360,773	4,298,248
Total Shareholders’ Equity	657,983	600,764	$ 502,507	$ 442,438
Total Liabilities and Shareholders’ Equity	5,018,756	4,899,012
Parent Company
Assets
Cash	26,171	20,621
Securities available-for-sale	6,286	5,908
Investment in subsidiaries	638,490	583,673
Net Loans	663	701
Fixed assets	23	5
Other assets	643	3,316
Total Assets	672,276	614,224
Liabilities
Junior subordinated debentures	4,056	4,053
Dividends payable	9,293	8,774
Deferred Tax Liabilities, Net	534	366
Other liabilities	410	267
Total Liabilities	14,293	13,460
Total Shareholders’ Equity	657,983	600,764
Total Liabilities and Shareholders’ Equity	$ 672,276	$ 614,224