Condensed Consolidated Balance Sheets Statement (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Investments
Fixed-maturities held to maturity—at amortized cost (fair value $1,273 and $2,748)	$ 1,233	$ 2,640
Fixed-maturities available for sale at fair value (amortized cost $64,795 and $120,757)	66,412	118,733
Equity securities available for sale—at fair value (cost $88,260 and $114,425)	112,884	128,424
Trading securities—at fair value (including variable interest entity (“VIE”) securities of $0 and $94,521)	4,145,380	4,211,059
Short-term investments at fair value (including VIE investments of $0 and $149,981)	780,164	1,261,703
Other invested assets (including VIE assets of $75,623 and $0)	133,045	61,000
Total investments	5,239,118	5,783,559
Cash	28,162	35,589
Restricted cash	24,515	27,020
Deferred policy acquisition costs	91,271	139,906
Accrued investment income	30,107	32,262
Accounts and notes receivable	89,712	102,647
Property and equipment, at cost (less accumulated depreciation of $98,640 and $96,403)	6,673	11,044
Derivative assets (including VIE derivative assets of $1,829 and $1,602)	14,857	17,212
Deferred income taxes, net	15,975	15,975
Reinsurance recoverables	94,584	157,985
Receivable for securities sold	52,438	18,702
Other assets (including VIE other assets of $100,575 and $105,903)	353,945	314,864
Total assets	6,041,357	6,656,765
Liabilities
Unearned premiums	614,455	637,372
Reserve for losses and loss adjustment expenses (“LAE”)	3,119,597	3,310,902
Reserve for premium deficiency	5,149	3,644
Long-term debt	659,119	818,584
VIE debt—at fair value	109,651	228,240
Derivative liabilities (including VIE derivative liabilities of $71,089 and $19,501)	267,323	126,006
Accounts payable and accrued expenses (including VIE accounts payable of $372 and $530)	350,810	349,726
Total liabilities	5,126,104	5,474,474
Commitments and Contingencies (Note 16)
Stockholders’ equity
Common stock: par value $.001 per share; 325,000,000 shares authorized; 151,126,371 and 150,666,446 shares issued at September 30, 2012 and December 31, 2011, repectively; 133,642,414 and 133,199,159 shares outstanding at September 30, 2012 and December 31, 2011, respectively	151	151
Treasury stock, at cost: 17,483,957 and 17,467,287 shares at September 30, 2012 and December 31, 2011, respectively	(892,094)	(892,052)
Additional paid-in capital	1,967,245	1,966,565
Retained (deficit) earnings	(177,939)	96,227
Accumulated other comprehensive income	17,890	11,400
Total stockholders’ equity	915,253	1,182,291
Total liabilities and stockholders’ equity	$ 6,041,357	$ 6,656,765