Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2016

Comprehensive Income (Loss) [Abstract]

Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations

	Years Ended December 31,
	2016									2015									2014
(Dollars in thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary	$	1,302		$	(512	)	$	790		$	(43,777	)	$	14,337		$	(29,440	)	$	(59,318	)	$	20,744		$	(38,574	)
URA(D) on securities - OTTI		5,113			(1,789	)		3,324			9,666			(3,383	)		6,283			(9,735	)		3,407			(6,328	)
Reclassification of net realized losses (gains) included in net income (loss)		32,642			(11,369	)		21,273			(2,772	)		1,955			(817	)		41,624			(14,551	)		27,073
Foreign currency translation adjustments		4,388			(1,539	)		2,849			(83,966	)		29,388			(54,578	)		(44,938	)		15,728			(29,210	)
Benefit plan actuarial net gain (loss)		(11,520	)		4,032			(7,488	)		8,740			(3,059	)		5,681			(60,169	)		21,059			(39,110	)
Reclassification of amortization of net gain (loss) included in net income (loss)		7,805			(2,732	)		5,073			9,563			(3,347	)		6,216			4,647			(1,627	)		3,020
Total other comprehensive income (loss)	$	39,730		$	(13,909	)	$	25,821		$	(102,546	)	$	35,891		$	(66,655	)	$	(127,890	)	$	44,761		$	(83,129	)
(Some amounts may not reconcile due to rounding)

Reclassification From Accumulated Other Comprehensive Income

	Years Ended December 31,						Affected line item within the statements of
AOCI component	2016			2015			operations and comprehensive income (loss)
(Dollars in thousands)
URA(D) on securities	$	32,642		$	(2,772	)	Other net realized capital gains (losses)
		(11,369	)		1,955		Income tax expense (benefit)
	$	21,273		$	(817	)	Net income (loss)
Benefit plan net gain (loss)	$	7,805		$	9,563		Other underwriting expenses
		(2,732	)		(3,347	)	Income tax expense (benefit)
	$	5,073		$	6,216		Net income (loss)
(Some amounts may not reconcile due to rounding)

Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets

	Years Ended December 31,
(Dollars in thousands)	2016			2015
Beginning balance of URA (D) on securities	$	13,654		$	37,628
Current period change in URA (D) of investments - temporary		22,063			(30,257	)
Current period change in URA (D) of investments - non-credit OTTI		3,324			6,283
Ending balance of URA (D) on securities		39,041			13,654
Beginning balance of foreign currency translation adjustments		(12,701	)		41,877
Current period change in foreign currency translation adjustments		2,849			(54,578	)
Ending balance of foreign currency translation adjustments		(9,852	)		(12,701	)
Beginning balance of benefit plan net gain (loss)		(63,089	)		(74,986	)
Current period change in benefit plan net gain (loss)		(2,415	)		11,897
Ending balance of benefit plan net gain (loss)		(65,504	)		(63,089	)
Ending balance of accumulated other comprehensive income (loss)	$	(36,315	)	$	(62,136	)