Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2023

Accumulated Other Comprehensive Loss

Schedule of components of accumulated other comprehensive loss

			Unrealized Gains and
	Benefit		(Losses) on Securities
(Dollars in thousands)	Plans		Available for Sale		Total
Three Months Ended June 30, 2023
Balance at March 31, 2023	$	(673)	$	(613,111)	$	(613,784)
Other comprehensive loss before reclassifications		—		(48,614)		(48,614)
Amounts reclassified from accumulated other comprehensive loss		—		—		—
Net comprehensive loss		—		(48,614)		(48,614)
Balance at June 30, 2023	$	(673)	$	(661,725)	$	(662,398)
Three Months Ended June 30, 2022
Balance at March 31, 2022	$	57	$	(294,013)	$	(293,956)
Other comprehensive loss before reclassifications		—		(196,928)		(196,928)
Amounts reclassified from accumulated other comprehensive loss		—		—		—
Net comprehensive loss		—		(196,928)		(196,928)
Balance at June 30, 2022	$	57	$	(490,941)	$	(490,884)
Six Months Ended June 30, 2023
Balance at December 31, 2022	$	(673)	$	(676,415)	$	(677,088)
Other comprehensive income before reclassifications		—		14,723		14,723
Amounts reclassified from accumulated other comprehensive loss		—		(33)		(33)
Net comprehensive income		—		14,690		14,690
Balance at June 30, 2023	$	(673)	$	(661,725)	$	(662,398)
Six Months Ended June 30, 2022
Balance at December 31, 2021	$	57	$	(21,203)	$	(21,146)
Other comprehensive loss before reclassifications		—		(469,738)		(469,738)
Amounts reclassified from accumulated other comprehensive loss		—		—		—
Net comprehensive loss		—		(469,738)		(469,738)
Balance at June 30, 2022	$	57	$	(490,941)	$	(490,884)

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 June 30,				For the Six Months Ended June 30,
Accumulated Other Comprehensive Income (Loss) Component	2023		2022		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)	$	—