Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Schedule of Components of AOCI, Net of Tax

The changes in the balance of each component of AOCI for the three and six months ended June 30, 2021 and 2020 were as follows:

(In thousands)	Unrealized Investment Gains (Losses)		Non-credit Impairments		Unrecognized Change in Defined Benefit Plan Liabilities*		Accumulated Other Comprehensive Income (Loss)
Balance, April 1, 2021	$	41,626	$	—	$	(104)	$	41,522
OCI, before reclassifications, net of tax	15,918		—		8		15,926
Amounts reclassified from AOCI, net of tax	(4,376)		—		—		(4,376)
Net OCI, current period	11,542		—		8		11,550
Balance, June 30, 2021	$	53,168	$	—	$	(96)	$	53,072
(In thousands)	Unrealized Investment Gains (Losses)		Non-credit Impairments		Unrecognized Change in Defined Benefit Plan Liabilities*		Accumulated Other Comprehensive Income (Loss)
Balance, December 31, 2020	$	75,388	$	(57)	$	(104)	$	75,227
OCI, before reclassifications, net of tax	(14,497)		—		8		(14,489)
Amounts reclassified from AOCI, net of tax	(7,723)		57		—		(7,666)
Net OCI, current period	(22,220)		57		8		(22,155)
Balance, June 30, 2021	$	53,168	$	—	$	(96)	$	53,072

(In thousands)	Unrealized Investment Gains (Losses)		Non-credit Impairments		Unrecognized Change in Defined Benefit Plan Liabilities*		Accumulated Other Comprehensive Income (Loss)
Balance, April 1, 2020	$	(4,015)	$	(817)	$	(78)	$	(4,910)
OCI, before reclassifications, net of tax	69,159		(187)		—		68,972
Amounts reclassified from AOCI, net of tax	(3,232)		300		—		(2,932)
Net OCI, current period	65,927		113		—		66,040
Balance, June 30, 2020	$	61,912	$	(704)	$	(78)	$	61,130
(In thousands)	Unrealized Investment Gains (Losses)		Non-credit Impairments		Unrecognized Change in Defined Benefit Plan Liabilities*		Accumulated Other Comprehensive Income (Loss)
Balance, December 31, 2019	$	37,333	$	(300)	$	(78)	$	36,955
OCI, before reclassifications, net of tax	27,695		(704)		—		26,991
Amounts reclassified from AOCI, net of tax	(3,116)		300		—		(2,816)
Net OCI, current period	24,579		(404)		—		24,175
Balance, June 30, 2020	$	61,912	$	(704)	$	(78)	$	61,130
* Represents the re-estimation of the defined benefit plan liability assumed in the Eastern acquisition. The Eastern defined benefit plan is frozen as to the earnings of additional benefits and the benefit plan liability is re-estimated annually. As a result of the NORCAL acquisition, the Company sponsors another frozen defined benefit plan (see Note 16). There were no amounts recorded in AOCI related to the re-estimation of this plan as of June 30, 2021 due to the application of GAAP purchase accounting. This plan will also be re-estimated annually on December 31 each year.