Accumulated Other Comprehensive Income ("AOCI") (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Income ("AOCI")

Schedule of changes in AOCI by component

	Year Ended December 31, 2020 and 2019
			Unamortized
			Unrealized
	Unrealized		Gain on
	Gains (Losses) on		Available-
	Available-		for-Sale		Defined
	for-Sale		Securities		Benefit
	Securities		Reclassified		Pension
	and I/O		to Held-to-		Plan
	Strips		Maturity		Items(1)		Total
	(Dollars in thousands)
Beginning balance January 1, 2020, net of taxes	$	1,602	$	298	$	(11,678)	$	(9,778)
Other comprehensive income (loss) before reclassification,
net of taxes		2,522		—		(3,459)		(937)
Amounts reclassified from other comprehensive income (loss),
net of taxes		(195)		(37)		230		(2)
Net current period other comprehensive income (loss),
net of taxes		2,327		(37)		(3,229)		(939)
Ending balance December 31, 2020, net of taxes	$	3,929	$	261	$	(14,907)	$	(10,717)
Beginning balance January 1, 2019, net of taxes	$	(5,007)	$	344	$	(7,718)	$	(12,381)
Other comprehensive income (loss) before reclassification,
net of taxes		7,075		—		(4,022)		3,053
Amounts reclassified from other comprehensive income (loss),
net of taxes		(466)		(46)		62		(450)
Net current period other comprehensive income (loss),
net of taxes		6,609		(46)		(3,960)		2,603
Ending balance December 31, 2019, net of taxes	$	1,602	$	298	$	(11,678)	$	(9,778)

(1) This AOCI component is included in the computation of net periodic benefit cost (see Note 14—Benefit Plans) and includes split-dollar life insurance benefit plan.

Schedule of reclassifications out of AOCI into net income

	Amounts Reclassified from
	AOCI(1)
	Year Ended
	December 31,						Affected Line Item Where
Details About AOCI Components	2020		2019		2018		Net Income is Presented
	(Dollars in thousands)
Unrealized gains on available-for-sale securities
and I/O strips	$	277	$	661	$	266	Gain on sales of securities
		(82)		(195)		(79)	Income tax expense
		195		466		187	Net of tax
Amortization of unrealized gain on securities
available-for-sale that were reclassified to securities
held-to-maturity		52		65		44	Interest income on taxable securities
		(15)		(19)		(13)	Income tax expense
		37		46		31	Net of tax
Amortization of defined benefit pension plan items (1)
Prior transition obligation and actuarial losses (2)		60		96		65
Actuarial losses (3)		(387)		(184)		(292)
		(327)		(88)		(227)	Other noninterest expense
		97		26		67	Income tax benefit
		(230)		(62)		(160)	Net of tax
Total reclassification from AOCI for the period	$	2	$	450	$	58

(1) This AOCI component is included in the computation of net periodic benefit cost (see Note 14 — Benefit Plans).

(2)   This is related to the split dollar life insurance benefit plan.

(3)   This is related to the supplemental executive retirement plan.