Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2022

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 months ended March 31, 2022 and 2021, net of tax:

March 31, 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	(133,591)		—		(133,591)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(294)		—		(294)
Net Current Period Other Comprehensive Income (Loss)	(133,885)		—		(133,885)
Ending Balance at March 31, 2022	$	(117,833)	$	(568)	$	(118,401)

March 31, 2021	Unrealized Gains and Losses on Available-for-Sale Securities		Postretirement Benefit Items		Total
Beginning Balance at January 1, 2021	$	35,943	$	(568)	$	35,375
Other Comprehensive Income (Loss) Before Reclassification	(21,058)		—		(21,058)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(770)		—		(770)
Net Current Period Other Comprehensive Income (Loss)	(21,828)		—		(21,828)
Ending Balance at March 31, 2021	$	14,115	$	(568)	$	13,547

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 months ended March 31, 2022 and 2021:

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	$	372	Net Gains on Securities
	(78)		Income Tax Expense
	294		Net of Tax
Total Reclassifications for the Three     Months Ended March 31, 2022	$	294

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	$	975	Net Gains on Securities
	(205)		Income Tax Expense
	770		Net of Tax
Total Reclassifications for the Three     Months Ended March 31, 2021	$	770