Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 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:

	March 31, 2012				December 31, 2011
(Dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed maturity securities	$	11,554,209	$	11,572,740	$	11,312,037	$	11,330,910
Equity securities available for sale	489,220		489,220		443,439		443,439
Arbitrage trading account	344,892		344,892		397,312		397,312
Loans receivable	357,121		339,365		263,187		245,169
Cash and cash equivalents	1,082,407		1,082,407		911,742		911,742
Trading account receivables from brokers and clearing organizations	382,479		382,479		318,240		318,240
Due from broker	—		—		10,875		10,875
Liabilities:
Trading account securities sold but not yet purchased	71,386		71,386		62,514		62,514
Due to broker	5,524		5,524		—		—
Junior subordinated debentures	243,050		252,000		242,997		258,400
Senior notes and other debt	1,853,512		1,992,665		1,500,503		1,587,473