Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated other comprehensive income (loss), beginning balance			$ (19,981)
Total other comprehensive income (loss), net of tax	$ (38,590)	$ 4,878	(98,060)	$ (7,737)
Accumulated other comprehensive income (loss), ending balance	(118,041)		(118,041)
Net Unrealized Gains (Losses) on AFS Securities [Member]
Accumulated other comprehensive income (loss), beginning balance	(56,255)	(3,438)	(6,795)	9,881
Other comprehensive income (loss) before reclassifications	(35,942)	4,134	(85,402)	(9,185)
Amounts reclassed from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive income (loss), net of tax	(35,942)	4,134	(85,402)	(9,185)
Accumulated other comprehensive income (loss), ending balance	(92,197)	696	(92,197)	696
Net Unrealized Losses on Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss), beginning balance	(14,348)	(1,150)	(4,013)	(1,447)
Other comprehensive income (loss) before reclassifications	(2,997)	120	(13,030)	203
Amounts reclassed from accumulated other comprehensive income (loss)	24	(50)	(278)	164
Total other comprehensive income (loss), net of tax	(2,973)	70	(13,308)	367
Accumulated other comprehensive income (loss), ending balance	(17,321)	(1,080)	(17,321)	(1,080)
Pension Benefit Adjustment [Member]
Accumulated other comprehensive income (loss), beginning balance	(8,848)	(15,418)	(9,173)	(15,825)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassed from accumulated other comprehensive income (loss)	325	674	650	1,081
Total other comprehensive income (loss), net of tax	325	674	650	1,081
Accumulated other comprehensive income (loss), ending balance	(8,523)	(14,744)	(8,523)	(14,744)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated other comprehensive income (loss), beginning balance	(79,451)	(20,006)	(19,981)	(7,391)
Other comprehensive income (loss) before reclassifications	(38,939)	4,254	(98,432)	(8,982)
Amounts reclassed from accumulated other comprehensive income (loss)	349	624	372	1,245
Total other comprehensive income (loss), net of tax	(38,590)	4,878	(98,060)	(7,737)
Accumulated other comprehensive income (loss), ending balance	$ (118,041)	$ (15,128)	$ (118,041)	$ (15,128)