Fair Value (Reconciliation of all Assets Measured at Fair Value on a Recurring Basis, Using Significant Unobservable Inputs (Level 3)) (Details) - Fair Value, Measurements, Recurring - Obligations of State and Political Subdivisions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	$ 497	$ 4,021
Total Gains (Losses) Included in Other Comprehensive Income	(2)	(26)
Maturities / Calls	(495)	(3,498)
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	$ 0	$ 497