Reclassification of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Supplemental Comprehensive Income Disclosures [Abstract]
Unrealized holding gains on securities arising during the period	$ (9,875)	$ 10,355
Reclassification adjustment for gains on securities included in net income	0	0
Total unrealized gains on securities	(9,875)	10,355
Unrealized holding gains on securities arising during the period	2,074	(1,820)
Reclassification adjustment for gains on securities included in net income	0	0
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	2,074	(1,820)
Total other comprehensive (loss) income	(9,292)	16,161
Other Comprehensive Income (Loss), Tax	1,951	(3,039)
Other comprehensive income (loss) before reclassification adjustment	(7,801)	8,535
Reclassification adjustment for gains on securities included in net income	0	0
Total unrealized (losses) gains on securities	(7,801)	8,535
Total other comprehensive (loss) income	(7,341)	13,122
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(119,097)	(124,570)	$ (111,756)	$ (137,692)
Other comprehensive income (loss) before reclassification adjustment	(7,801)	8,535
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7,341)	13,122
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive (loss) income	(7,341)	13,122
Unrealized holding (losses) gains on securities arising during the period	(9,875)	10,355
Unrealized holding gains on securities arising during the period	2,074	(1,820)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0
Reclassification adjustment for gains on securities included in net income	0	0
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	(9,875)	10,355
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	2,074	(1,820)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	(7,801)	8,535
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	(123)	(1,219)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	583	5,806
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	460	4,587
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	(123)	(1,219)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	583	5,806
Other Comprehensive Income (Loss), before Tax	(9,292)	16,161
Other Comprehensive Income (Loss), Tax	1,951	(3,039)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(7,801)	8,535
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(100,141)	(98,936)	(92,340)	(107,471)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7,801)	8,535
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive (loss) income	(7,801)	8,535
Accumulated Defined Benefit Plans Adjustment [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	0	0
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	344	268	344	268
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive (loss) income	0	0
Derivative [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	460	4,587
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(19,300)	(25,902)	$ (19,760)	$ (30,489)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive (loss) income	460	4,587
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	460	4,587
Accumulated Other Comprehensive Income (Loss), net [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(7,341)	13,122
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income	$ (7,341)	$ 13,122