Fair Value Disclosures (Change In Balance Sheet Carrying Value Associated With Level 3 Financial Assets Carried At Fair Value) (Details) - Level 3 - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, net		$ 89,018	$ 153,465
Total (losses) gains (realized/unrealized) included in earnings, net		(2,197)	(1,682)	[1]
Net unrealized gains (losses) included in other comprehensive income		(3,527)	961	[2]
Purchases, net		16,321	24,660
Sales, net		(7,556)	(21,042)
Transfers into Level 3, net		30,538	1,515	[3]
Transfers out of Level 3, net		(82,021)	(68,859)	[3]
Balance, end of period, net		40,576	89,018
Other assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		807	2,491
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	(373)	(1,684)
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	0	0
Purchases, assets		0	0
Sales, assets		0	0
Transfers into Level 3, assets	[3]	0	0
Transfers out of Level 3, assets	[3]	0	0
Balance, end of period, assets		434	807
Other liabilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, liabilities		(25,233)	(20,330)
Total (losses) gains (realized/unrealized) included in earnings, liabilities	[1]	2,450	822
Net unrealized (losses) gains included in other comprehensive income, liabilities	[2]	0	0
Purchases, liabilities		(77)	(4,081)
Sales, liabilities		(77)	0
Transfers into Level 3, liabilities	[3]	0	0
Transfers out of Level 3, liabilities	[3]	0	0
Balance, end of period, liabilities		(27,683)	(25,233)
Other investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		2,121	4,171
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	34	(2,174)
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	(42)	10
Purchases, assets		0	440
Sales, assets		(124)	(128)
Transfers into Level 3, assets	[3]	236	0
Transfers out of Level 3, assets	[3]	0	(198)
Balance, end of period, assets		2,225	2,121
Fixed maturity securities | Commercial mortgage-backed
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		403	598
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	0	0
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	(11)	(18)
Purchases, assets		0	0
Sales, assets		(188)	(177)
Transfers into Level 3, assets	[3]	0	0
Transfers out of Level 3, assets	[3]	0	0
Balance, end of period, assets		204	403
Fixed maturity securities | Residential mortgage-backed
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		4,645	4,167
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	1	0
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	(104)	(78)
Purchases, assets		9,721	4,723
Sales, assets		0	0
Transfers into Level 3, assets	[3]	0	0
Transfers out of Level 3, assets	[3]	(14,263)	(4,167)
Balance, end of period, assets		0	4,645
Fixed maturity securities | State, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		0	22,657
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]		0
Net unrealized (losses) gains included in other comprehensive income, assets	[2]		0
Purchases, assets			0
Sales, assets			0
Transfers into Level 3, assets	[3]		0
Transfers out of Level 3, assets	[3]		(22,657)
Balance, end of period, assets			0
Fixed maturity securities | Foreign governments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		0	16,857
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]		(2)
Net unrealized (losses) gains included in other comprehensive income, assets	[2]		18
Purchases, assets			0
Sales, assets			0
Transfers into Level 3, assets	[3]		0
Transfers out of Level 3, assets	[3]		(16,873)
Balance, end of period, assets			0
Fixed maturity securities | Corporate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		104,275	115,344
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	591	2,438
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	(3,620)	1,546
Purchases, assets		6,523	23,578
Sales, assets		(7,167)	(16,958)
Transfers into Level 3, assets	[3]	30,302	1,515
Transfers out of Level 3, assets	[3]	(67,758)	(23,188)
Balance, end of period, assets		63,146	104,275
Equity securities | Non-redeemable preferred stocks
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period, assets		2,000	7,510
Total (losses) gains (realized/unrealized) included in earnings, assets	[1]	0	562
Net unrealized (losses) gains included in other comprehensive income, assets	[2]	250	(517)
Purchases, assets		0	0
Sales, assets		0	(3,779)
Transfers into Level 3, assets	[3]	0	0
Transfers out of Level 3, assets	[3]	0	(1,776)
Balance, end of period, assets		$ 2,250	$ 2,000

[1] Included as part of net realized gains on investments in the consolidated statement of operations.

[2] Included as part of change in unrealized gains on securities in the consolidated statement of comprehensive income.

[3] Transfers are primarily attributable to changes in the availability of observable market information and re-evaluation of the observability of pricing inputs.