Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated other comprehensive income (loss), beginning balance			$ (19,981)
Total other comprehensive income (loss), net of tax	$ (53,714)	$ (3,000)	(151,774)	$ (10,737)
Accumulated other comprehensive income (loss), ending balance	(171,755)		(171,755)
Net Unrealized Gains (Losses) on AFS Securities [Member]
Accumulated other comprehensive income (loss), beginning balance	(92,197)	696	(6,795)	9,881
Other comprehensive income (loss) before reclassifications	(47,067)	(3,137)	(132,469)	(12,322)
Amounts reclassed from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive income (loss), net of tax	(47,067)	(3,137)	(132,469)	(12,322)
Accumulated other comprehensive income (loss), ending balance	(139,264)	(2,441)	(139,264)	(2,441)
Net Unrealized Losses on Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss), beginning balance	(17,321)	(1,080)	(4,013)	(1,447)
Other comprehensive income (loss) before reclassifications	(7,790)	(219)	(20,820)	(16)
Amounts reclassed from accumulated other comprehensive income (loss)	817	(184)	539	(20)
Total other comprehensive income (loss), net of tax	(6,973)	(403)	(20,281)	(36)
Accumulated other comprehensive income (loss), ending balance	(24,294)	(1,483)	(24,294)	(1,483)
Pension Benefit Adjustment [Member]
Accumulated other comprehensive income (loss), beginning balance	(8,523)	(14,744)	(9,173)	(15,825)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassed from accumulated other comprehensive income (loss)	326	540	976	1,621
Total other comprehensive income (loss), net of tax	326	540	976	1,621
Accumulated other comprehensive income (loss), ending balance	(8,197)	(14,204)	(8,197)	(14,204)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated other comprehensive income (loss), beginning balance	(118,041)	(15,128)	(19,981)	(7,391)
Other comprehensive income (loss) before reclassifications	(54,857)	(3,356)	(153,289)	(12,338)
Amounts reclassed from accumulated other comprehensive income (loss)	1,143	356	1,515	1,601
Total other comprehensive income (loss), net of tax	(53,714)	(3,000)	(151,774)	(10,737)
Accumulated other comprehensive income (loss), ending balance	$ (171,755)	$ (18,128)	$ (171,755)	$ (18,128)