Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Of Financial Instruments [Abstract]

Carrying Amounts And Estimated Fair Values Of Financial Instruments

The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments:

	September 30, 2012				December 31, 2011
(Dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed maturity securities	$	11,892,412	$	11,916,722	$	11,312,037	$	11,330,910
Equity securities available for sale	425,322		425,322		443,439		443,439
Arbitrage trading account	417,446		417,446		397,312		397,312
Loans receivable	371,408		363,875		263,187		245,169
Cash and cash equivalents	1,189,564		1,189,564		911,742		911,742
Trading account receivables from brokers and clearing organizations	387,352		387,352		318,240		318,240
Due from broker	—		—		10,875		10,875
Liabilities:
Trading account securities sold but not yet purchased	149,405		149,405		62,514		62,514
Due to broker	82,746		82,746		—		—
Junior subordinated debentures	243,154		254,800		242,997		258,400
Senior notes and other debt	1,877,431		2,110,492		1,500,503		1,587,473