Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2011

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 as of December 31, 2011 and 2010:

	2011				2010
(Dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed maturity securities	$	11,312,037	$	11,330,910	$	11,209,154	$	11,215,317
Equity securities available for sale	443,439		443,439		561,053		561,053
Arbitrage trading account	397,312		397,312		359,192		359,192
Loans receivable	263,187		245,169		353,583		312,515
Cash and cash equivalents	911,742		911,742		642,952		642,952
Trading accounts receivable from brokers and clearing organizations	318,240		318,240		339,235		339,235
Due from broker	10,875		10,875		—		—
Liabilities:
Trading account securities sold but not yet purchased	62,514		62,514		53,494		53,494
Junior subordinated debentures	242,997		258,400		242,784		249,900
Senior notes and other debt	1,500,503		1,587,473		1,500,419		1,570,057