Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (Loss)

The tables below summarize the changes in accumulated other comprehensive income (loss) by component for the three and six months ended June 30, 2023 and 2022, net of tax:

June 30, 2023	Unrealized Gains and Losses on Available-for-Sale Securities		Postretirement Benefit Items		Total
Beginning Balance at April 1, 2023	$	(229,978)	$	(514)	$	(230,492)
Other Comprehensive Income (Loss) Before Reclassification	(18,330)		—		(18,330)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(30)		—		(30)
Net Current Period Other Comprehensive Income (Loss)	(18,360)		—		(18,360)
Ending Balance at June 30, 2023	$	(248,338)	$	(514)	$	(248,852)

June 30, 2023	Unrealized Gains and Losses on Available-for-Sale Securities		Postretirement Benefit Items		Total
Beginning Balance at January 1, 2023	$	(262,924)	$	(514)	$	(263,438)
Other Comprehensive Income (Loss) Before Reclassification	14,618		—		14,618
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(32)		—		(32)
Net Current Period Other Comprehensive Income (Loss)	14,586		—		14,586
Ending Balance at June 30, 2023	$	(248,338)	$	(514)	$	(248,852)

June 30, 2022	Unrealized Gains and Losses on Available-for-Sale Securities		Postretirement Benefit Items		Total
Beginning Balance at April 1, 2022	$	(117,833)	$	(568)	$	(118,401)
Other Comprehensive Income (Loss) Before Reclassification	(92,632)		—		(92,632)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(62)		—		(62)
Net Current Period Other Comprehensive Income (Loss)	(92,694)		—		(92,694)
Ending Balance at June 30, 2022	$	(210,527)	$	(568)	$	(211,095)

June 30, 2022	Unrealized Gains and Losses on Available-for-Sale Securities		Postretirement Benefit Items		Total
Beginning Balance at January 1, 2022	$	16,052	$	(568)	$	15,484
Other Comprehensive Income (Loss) Before Reclassification	(226,223)		—		(226,223)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(356)		—		(356)
Net Current Period Other Comprehensive Income (Loss)	(226,579)		—		(226,579)
Ending Balance at June 30, 2022	$	(210,527)	$	(568)	$	(211,095)

Schedule of Classifications Out of Accumulated Other Comprehensive Income (Loss)

The tables below summarize the classifications out of accumulated other comprehensive income (loss) by component for the three and six months ended June 30, 2023 and 2022:

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)		Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on     Available-for-Sale Securities	$	38	Net Gains on Securities
	(8)		Income Tax Expense
	30		Net of Tax
Total Reclassifications for the Three     Months Ended June 30, 2023	$	30

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)		Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on     Available-for-Sale Securities	$	40	Net Gains on Securities
	(8)		Income Tax Expense
	32		Net of Tax
Total Reclassifications for the Six     Months Ended June 30, 2023	$	32

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)		Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on     Available-for-Sale Securities	$	78	Net Gains on Securities
	(16)		Income Tax Expense
	62		Net of Tax
Total Reclassifications for the Three     Months Ended June 30, 2022	$	62

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)		Affected Line Item in the Statement Where Net Income is Presented
Unrealized Gains and Losses on     Available-for-Sale Securities	$	450	Net Gains on Securities
	(94)		Income Tax Expense
	356		Net of Tax
Total Reclassifications for the Six     Months Ended June 30, 2022	$	356