Reclassification of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Supplemental Comprehensive Income Disclosures [Abstract]
Unrealized holding gains on securities arising during the period	$ (14,116)	$ (31,794)	$ (3,761)	$ (89,045)
Reclassification adjustment for gains on securities included in net income	0	0	0	(2)
Total unrealized gains on securities	(14,116)	(31,794)	(3,761)	(89,047)
Unrealized holding gains on securities arising during the period	2,964	6,677	1,144	18,700
Reclassification adjustment for gains on securities included in net income	0	0	0	0
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	2,964	6,677	1,144	18,700
Total other comprehensive (loss) income	(17,697)	(36,539)	(1,536)	(111,718)
Other Comprehensive Income (Loss), Tax	3,716	7,674	677	23,461
Other comprehensive income (loss) before reclassification adjustment	(11,152)	(25,117)	(2,617)	(70,345)
Reclassification adjustment for gains on securities included in net income	0	0	0	2
Total unrealized (losses) gains on securities	(11,152)	(25,117)	(2,617)	(70,347)
Total other comprehensive (loss) income	(13,981)	(28,865)	(859)	(88,257)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(138,551)	(97,025)	(138,551)	(97,025)	$ (124,570)	$ (137,692)	$ (68,160)	$ (8,768)
Other comprehensive income (loss) before reclassification adjustment	(11,152)	(25,117)	(2,617)	(70,345)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(13,981)	(28,865)	(859)	(88,255)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	(2)
Total other comprehensive (loss) income	(13,981)	(28,865)	(859)	(88,257)
Unrealized holding losses on securities arising during the period	(14,116)	(31,794)	(3,761)	(89,045)
Unrealized holding gains on securities arising during the period	2,964	6,677	1,144	18,700
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	0	0	0	2
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0	0	0
Reclassification adjustment for gains on securities included in net income	0	0	0	2
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	(14,116)	(31,794)	(3,761)	(89,047)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	2,964	6,677	1,144	18,700
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	(11,152)	(25,117)	(2,617)	(70,347)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	752	997	(467)	4,761
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	(3,581)	(4,745)	2,225	(22,671)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(2,829)	(3,748)	1,758	(17,910)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	752	997	(467)	4,761
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	(3,581)	(4,745)	2,225	(22,671)
Other Comprehensive Income (Loss), before Tax	(17,697)	(36,539)	(1,536)	(111,718)
Other Comprehensive Income (Loss), Tax	3,716	7,674	677	23,461
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(11,152)	(25,117)	(2,617)	(70,347)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(110,088)	(73,664)	(110,088)	(73,664)	(98,936)	(107,471)	(48,547)	(3,317)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(11,152)	(25,117)	(2,617)	(70,345)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	(2)
Total other comprehensive (loss) income	(11,152)	(25,117)	(2,617)	(70,347)
Accumulated Defined Benefit Plans Adjustment [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	0	0	0	0
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	268	95	268	95	268	268	95	95
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive (loss) income	0	0	0	0
Derivative [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(2,829)	(3,748)	1,758	(17,910)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(28,731)	(23,456)	(28,731)	(23,456)	$ (25,902)	$ (30,489)	$ (19,708)	$ (5,546)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(2,829)	(3,748)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive (loss) income	(2,829)	(3,748)	1,758	(17,910)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(2,829)	(3,748)	1,758	(17,910)
Accumulated Other Comprehensive Income (Loss), net [Member]
Supplemental Comprehensive Income Disclosures [Abstract]
Total other comprehensive (loss) income	(13,981)	(28,865)	(859)	(88,257)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income	$ (13,981)	$ (28,865)	$ (859)	$ (88,257)