Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2021

Accumulated Other Comprehensive Income (Loss).

Schedule of changes in accumulated other comprehensive income (loss)

			Income
			Tax
	Pre-tax		Benefit		Net of
(dollars in thousands)	Amount		(Expense)		Tax
Accumulated other comprehensive income at December 31, 2020	$	43,098	$	(11,494)	$	31,604
Three months ended March 31, 2021
Investment securities:
Unrealized net losses arising during the period		(102,336)		27,297		(75,039)
Net change in investment securities		(102,336)		27,297		(75,039)
Other comprehensive loss		(102,336)		27,297		(75,039)
Accumulated other comprehensive loss at March 31, 2021	$	(59,238)	$	15,803	$	(43,435)

			Income
			Tax
	Pre-tax		Benefit		Net of
(dollars in thousands)	Amount		(Expense)		Tax
Accumulated other comprehensive loss at December 31, 2019	$	(43,450)	$	11,701	$	(31,749)
Three months ended March 31, 2020
Pension and other benefits:
Change in Company tax rate		—		(96)		(96)
Net change in pension and other benefits		—		(96)		(96)
Investment securities:
Unrealized net gains arising during the period		49,164		(13,128)		36,036
Reclassification of net gains to net income:
Investment securities gains, net		(85)		23		(62)
Net change in investment securities		49,079		(13,105)		35,974
Other comprehensive income		49,079		(13,201)		35,878
Accumulated other comprehensive income at March 31, 2020	$	5,629	$	(1,500)	$	4,129

Summary of changes in accumulated other comprehensive income (loss), net of tax

	Pensions				Accumulated
	and				Other
	Other		Investment		Comprehensive
(dollars in thousands)	Benefits		Securities		Income (Loss)
Three Months Ended March 31, 2021
Balance at beginning of period	$	(31,737)	$	63,341	$	31,604
Other comprehensive loss		—		(75,039)		(75,039)
Balance at end of period	$	(31,737)	$	(11,698)	$	(43,435)
Three Months Ended March 31, 2020
Balance at beginning of period	$	(28,082)	$	(3,667)	$	(31,749)
Other comprehensive income		(96)		35,974		35,878
Balance at end of period	$	(28,178)	$	32,307	$	4,129