Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2023

Accumulated Other Comprehensive Income (Loss)

Schedule of components of accumulated other comprehensive (loss) income

			Unrealized Gains and
	Benefit		(Losses) on Securities
(Dollars in thousands)	Plans		Available for Sale		Total
Three Months Ended March 31, 2023
Balance at December 31, 2022	$	(673)	$	(676,415)	$	(677,088)
Other comprehensive income before reclassifications		—		63,271		63,271
Amounts reclassified from accumulated other comprehensive loss		—		33		33
Net comprehensive income		—		63,304		63,304
Balance at March 31, 2023	$	(673)	$	(613,111)	$	(613,784)
Three Months Ended March 31, 2022
Balance at December 31, 2021	$	57	$	(21,203)	$	(21,146)
Other comprehensive loss before reclassifications		—		(272,810)		(272,810)
Net comprehensive loss		—		(272,810)		(272,810)
Balance at March 31, 2022	$	57	$	(294,013)	$	(293,956)

Schedule of reclassifications out of accumulated other comprehensive (loss) income, net of tax

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
(Dollars in thousands)	For the Three Months Ended March 31,
Accumulated Other Comprehensive Income (Loss) Component	2023		2022		Income Statement Line Item Affected
Gains on sales of available for sale securities:
	$	45	$	—	Securities gains, net
		(12)		—	Provision for income taxes
		33		—	Net income
Total reclassifications for the period	$	33	$	—