Comprehensive Income/Loss (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Comprehensive income

The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 15 "Employee Benefit Plans" within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2020 Form 10-K.

Company's accumulated other comprehensive loss, net of tax

Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated:

	Unrealized Gain (Loss) on Securities		Unrealized Gain on Cash Flow Hedge		Defined Benefit Postretirement Plans		Accumulated Other Comprehensive Income (Loss)
	(Dollars in thousands)
	2021
Beginning balance: January 1, 2021	$	13,255	$	33,276	$	(5,836)	$	40,695
Net change in other comprehensive income (loss)	(7,774)		(6,583)		819		(13,538)
Ending balance: March 31, 2021	$	5,481	$	26,693	$	(5,017)	$	27,157
	2020
Beginning balance: January 1, 2020	$	4,398	$	16,479	$	(2,708)	$	18,169
Net change in other comprehensive income (loss)	9,347		22,984		(772)		31,559
Ending balance: March 31, 2020	$	13,745	$	39,463	$	(3,480)	$	49,728