Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2021

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component, Including Amounts Reclassified to Other Comprehensive Income (Loss) and the Related Line Item in the Statements of Operations Where Net Income is Presented

Changes in accumulated other comprehensive income ("AOCI") (loss) by component, including amounts reclassified to other comprehensive income ("OCI") (loss) and the related line item in the Statements of Operations where net income is presented, are as follows:

	Three months ended						Three months ended
	March 31, 2021						March 31, 2020
(in thousands)	Before Tax		Income Tax		Net		Before Tax		Income Tax		Net
Investment securities:
AOCI, beginning of period	$	29,384	$	6,171	$	23,213	$	5,664	$	1,189	$	4,475
OCI (loss) before reclassifications (1)	(9,508)		(1,997)		(7,511)		(35,693)		(1,665)		(34,028)
Realized investment gains	(1,483)		(311)		(1,172)		(615)		(129)		(486)
Impairment (recoveries) losses	(87)		(18)		(69)		2,883		605		2,278
OCI (loss)	(11,078)		(2,326)		(8,752)		(33,425)		(1,189)		(32,236)
AOCI (loss), end of period (1)	$	18,306	$	3,845	$	14,461	$	(27,761)	$	0	$	(27,761)
Pension and other postretirement plans:
AOCI (loss), beginning of period	$	(128,300)	$	(26,944)	$	(101,356)	$	(153,600)	$	(32,257)	$	(121,343)
Amortization of prior service costs	357		75		282		336		71		265
Amortization of net actuarial loss	4,026		845		3,181		3,031		636		2,395
OCI	4,383		920		3,463		3,367		707		2,660
AOCI (loss), end of period	$	(123,917)	$	(26,024)	$	(97,893)	$	(150,233)	$	(31,550)	$	(118,683)
Total
AOCI (loss), beginning of period	$	(98,916)	$	(20,773)	$	(78,143)	$	(147,936)	$	(31,068)	$	(116,868)
Investment securities	(11,078)		(2,326)		(8,752)		(33,425)		(1,189)		(32,236)
Pension and other postretirement plans	4,383		920		3,463		3,367		707		2,660
OCI (loss)	(6,695)		(1,406)		(5,289)		(30,058)		(482)		(29,576)
AOCI (loss), end of period	$	(105,611)	$	(22,179)	$	(83,432)	$	(177,994)	$	(31,550)	$	(146,444)

(1)At March 31, 2020 a valuation allowance was recognized on the deferred tax asset primarily related to unrealized losses on our investments.