Fair Value (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value [Abstract]

Fair Value Measurement Levels For All Assets, Recorded At Fair And Market Value

			Fair Value Measurement Using:
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
(Dollars in thousands)	June 30, 2020		(Level 1)		(Level 2)		(Level 3)
Assets:
Fixed maturities, market value
U.S. Treasury securities and obligations of U.S. government agencies and corporations	$	772,984	$	-	$	772,984	$	-
Obligations of U.S. States and political subdivisions		531,283		-		531,283		-
Corporate securities		2,999,558		-		2,348,372		651,186
Asset-backed securities		984,783		-		689,053		295,730
Mortgage-backed securities
Commercial		381,047		-		381,047		-
Agency residential		637,201		-		637,201		-
Non-agency residential		506		-		506		-
Foreign government securities		669,890		-		669,890		-
Foreign corporate securities		942,125		-		935,851		6,274
Total fixed maturities, market value		7,919,377		-		6,966,187		953,190
Fixed maturities, fair value		4,431		-		-		4,431
Equity securities, fair value		789,819		740,197		39,745		9,877
Other invested assets, fair value		1,786,003		-		-		1,786,003

			Fair Value Measurement Using:
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
(Dollars in thousands)	December 31, 2019		(Level 1)		(Level 2)		(Level 3)
Assets:
Fixed maturities, market value
U.S. Treasury securities and obligations of U.S. government agencies and corporations	$	777,515	$	-	$	777,515	$	-
Obligations of U.S. States and political subdivisions		535,911		-		535,911		-
Corporate securities		2,821,557		-		2,274,618		546,939
Asset-backed securities		765,957		-		612,316		153,641
Mortgage-backed securities
Commercial		329,049		-		329,049		-
Agency residential		644,687		-		644,687		-
Non-agency residential		1,638		-		1,638		-
Foreign government securities		658,007		-		658,007		-
Foreign corporate securities		957,758		-		956,007		1,751
Total fixed maturities, market value		7,492,079		-		6,789,748		702,331
Fixed maturities, fair value		5,826		-		-		5,826
Equity securities, fair value		764,049		719,548		44,501		-
Other invested assets, fair value		1,982,582		-		-		1,982,582

Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type

	Total Fixed Maturities, Market Value
	Three Months Ended June 30, 2020								Six Months Ended June 30, 2020
	Corporate		Asset		Foreign				Corporate		Foreign		Foreign
(Dollars in thousands)	Securities		Backed Securities		Corporate		Total		Securities		Corporate		Corporate		Total
Beginning balance	$	642,432	$	238,631	$	-	$	881,063	$	546,939	$	153,641	$	1,751	$	702,331
Total gains or (losses) (realized/unrealized)
Included in earnings		(248)		121		(97)		(224)		(462)		125		(97)		(434)
Included in other comprehensive  income (loss)		(549)		18,092		(40)		17,503		(3,906)		2,210		(40)		(1,736)
Purchases, issuances and settlements		14,346		38,886		5,434		58,666		113,410		139,754		3,683		256,847
Transfers in and/or (out) of Level 3		(4,795)		-		977		(3,818)		(4,795)		-		977		(3,818)
Ending balance	$	651,186	$	295,730	$	6,274	$	953,190	$	651,186	$	295,730	$	6,274	$	953,190
The amount of total gains or losses for the  period included in earnings (or changes in  net assets) attributable to the change in  unrealized gains or losses relating to  assets still held at the reporting date	$	-	$	-	$	-	$	-	$	(539)	$	-	$	-	$	(539)
(Some amounts may not reconcile due to rounding.)

	Total Fixed Maturities, Market Value
	Three Months Ended June 30, 2019						Six Months Ended June 30, 2019
	Corporate		Foreign				Corporate		Foreign
(Dollars in thousands)	Securities		Corporate		Total		Securities		Corporate		Total
Beginning balance	$	367,178	$	7,298	$	374,476	$	376,250	$	7,744	$	383,994
Total gains or (losses) (realized/unrealized)
Included in earnings		(2,528)		(238)		(2,766)		2,330		(119)		2,211
Included in other comprehensive income (loss)		1,870		-		1,870		2,444		-		2,444
Purchases, issuances and settlements		101,732		(4,967)		96,765		89,686		(5,532)		84,154
Transfers in and/or (out) of Level 3		3,977		-		3,977		1,519		-		1,519
Ending balance	$	472,229	$	2,093	$	474,322	$	472,229	$	2,093	$	474,322
The amount of total gains or losses for the  period included in earnings (or changes in  net assets) attributable to the change in  unrealized gains or losses relating to  assets still held at the reporting date	$	-	$	-	$	-	$	-	$	-	$	-
(Some amounts may not reconcile due to rounding.)

	Total Fixed Maturities, Fair Value
	Three Months Ended June 30, 2020				Six Months Ended June 30, 2020
	Foreign				Foreign
(Dollars in thousands)	Corporate		Total		Corporate		Total
Beginning balance fixed maturities at fair value	$	4,703	$	4,703	$	5,826	$	5,826
Total gains or (losses) (realized/unrealized)
Included in earnings		(272)		(272)		(1,395)		(1,395)
Included in other comprehensive income (loss)		-		-		-		-
Transfers in and/or (out) of Level 3		-		-		-		-
Ending balance	$	4,431	$	4,431	$	4,431	$	4,431
The amount of total gains or losses for the period  included in earnings (or changes in net assets)  attributable to the change in unrealized gains or  losses relating to assets still held at the  reporting date	$	-	$	-	$	-	$	-
(Some amounts may not reconcile due to rounding.)

	Total Fixed Maturities, Fair Value
	Three Months Ended June 30, 2019				Six Months Ended June 30, 2019
	Foreign				Foreign
(Dollars in thousands)	Corporate		Total		Corporate		Total
Beginning balance fixed maturities at fair value	$	2,350	$	2,350	$	2,337	$	2,337
Total gains or (losses) (realized/unrealized)
Included in earnings		356		356		369		369
Included in other comprehensive income (loss)		-		-		-		-
Purchases, issuances and settlements		(2,706)		(2,706)		(2,706)		(2,706)
Transfers in and/or (out) of Level 3		-		-		-		-
Ending balance	$	-	$	-	$	-	$	-
The amount of total gains or losses for the period  included in earnings (or changes in net assets)  attributable to the change in unrealized gains or  losses relating to assets still held at the  reporting date	$	-	$	-	$	-	$	-
(Some amounts may not reconcile due to rounding.)

Fair Value Measurements Using Significant Unobservable Inputs

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(Dollars in thousands)	2020		2019		2020		2019
Equity securities
Balance, beginning of period	$	-	$	-	$	-	$	-
Total (gains) or losses (realized/unrealized)
Included in earnings		-		-		-		-
Included in other comprehensive income (loss)		-		-		-		-
Purchases, issuances and settlements		9,877		-		9,877		-
Transfers in and/or (out) of Level 3		-		-		-		-
Balance, end of period	$	9,877	$	-	$	9,877	$	-
The amount of total gains or losses for the period included in earnings
(or changes in net assets) attributable to the change in unrealized
gains or losses relating to liabilities still held at the reporting date	$	-	$	-	$	-	$	-
(Some amounts may not reconcile due to rounding.)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(Dollars in thousands)	2020		2019		2020		2019
Other invested assets, fair value:
Beginning balance	$	2,425,061	$	1,767,963	$	1,982,582	$	1,717,336
Total gains or (losses) (realized/unrealized)
Included in earnings		(639,058)		125,025		(196,579)		175,652
Included in other comprehensive income (loss)		-		-		-		-
Purchases, issuances and settlements		-		-		-		-
Transfers in and/or (out) of Level 3		-		-		-		-
Ending balance	$	1,786,003	$	1,892,988	$	1,786,003	$	1,892,988
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	$	-	$	-	$	-	$	-
(Some amounts may not reconcile due to rounding.)