Accumulated Other Comprehensive Income (Loss) Reclassified by Component (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest and dividend income	$ 96,561		$ 74,291		$ 188,678	$ 145,611
Interest (expense)	(53,183)		(9,561)		(100,038)	(17,402)
Other operating expense	5,547		4,891		12,000	10,822
Provision for income taxes	3,177		9,936		4,978	16,357
Total before tax	11,805		34,971		18,764	59,611
Net Income (Loss)	8,628	$ 5,158	25,035	$ 18,219	13,786	43,254
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member]
Interest (expense)						(5,087)
Provision for income taxes						1,598
Net Income (Loss)						(3,489)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Interest (expense)	6,785		(2,364)		11,040
Provision for income taxes	(2,113)		734		(3,420)
Net Income (Loss)	4,672		(1,630)		7,620
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Other operating expense	100		6		200	12
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Other operating expense			7			14
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Provision for income taxes	(31)		9		(62)
Total before tax			13			26
Tax expense (benefit)						5
Net Income (Loss)	69		$ 22		138	$ 31
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI Attributable to Parent [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member]
Interest and dividend income	(4,266)				(5,504)
Provision for income taxes	1,321				1,705
Net Income (Loss)	$ (2,945)				$ (3,799)