Securities (Schedule of Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	$ 382,756	$ 186,671
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(33,924)	(2,797)
Continuous Unrealized Loss Position of 12 Months or More, Estimated Fair value	72,730	40,821
Continuous Unrealized Loss Position of 12 Months or More, Unrealized losses	(14,239)	(1,355)
Total, Estimated Fair value	455,486	227,492
Total, Unrealized losses	(48,163)	(4,152)
U.S. Government treasuries [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	161,009
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(1,010)
Total, Estimated Fair value	161,009
Total, Unrealized losses	(1,010)
U.S. Government agencies [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	11,960	14,443
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(1,207)	(340)
Continuous Unrealized Loss Position of 12 Months or More, Estimated Fair value	18,572	15,220
Continuous Unrealized Loss Position of 12 Months or More, Unrealized losses	(3,574)	(527)
Total, Estimated Fair value	30,532	29,663
Total, Unrealized losses	(4,781)	(867)
Mortgage-backed securities/CMOs [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	133,182	131,876
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(15,276)	(1,735)
Continuous Unrealized Loss Position of 12 Months or More, Estimated Fair value	39,881	15,192
Continuous Unrealized Loss Position of 12 Months or More, Unrealized losses	(5,901)	(524)
Total, Estimated Fair value	173,063	147,068
Total, Unrealized losses	(21,177)	(2,259)
Corporate bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	9,152
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(334)
Total, Estimated Fair value	9,152
Total, Unrealized losses	(334)
Municipal bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position of Less Than 12 Months, Estimated Fair value	67,453	40,352
Continuous Unrealized Loss Position of Less Than 12 Months, Unrealized losses	(16,097)	(722)
Continuous Unrealized Loss Position of 12 Months or More, Estimated Fair value	14,277	10,409
Continuous Unrealized Loss Position of 12 Months or More, Unrealized losses	(4,764)	(304)
Total, Estimated Fair value	81,730	50,761
Total, Unrealized losses	$ (20,861)	$ (1,026)