Significant Accounting Policies and Pronouncements - Adoption of New Accounting Pronouncements - Impact of DAC Restatement BS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Deferred policy acquisition costs	$ 906,814	$ 666,764	[1]	$ 1,357,156	$ 1,242,791
Income taxes receivable	0	102,678	[1]
TOTAL ASSETS	52,855,453	52,254,858	[1]
TOTAL LIABILITIES	51,611,576	51,234,281	[1]
Accumulated other comprehensive income (loss)	147,287	160,712	[1]
Retained earnings (accumulated deficit)	200,754	(25,305)	[1]
TOTAL EQUITY	1,243,877	1,020,577	[1]
TOTAL LIABILITIES AND EQUITY	52,855,453	52,254,858	[1]
Income taxes payable	65,567	0
Restatement Adjustment [Member]
Deferred policy acquisition costs		(90,419)
Income taxes receivable		32,253
TOTAL ASSETS		(58,166)
TOTAL LIABILITIES		0
Accumulated other comprehensive income (loss)		9,020
Retained earnings (accumulated deficit)		(67,186)
TOTAL EQUITY		(58,166)
TOTAL LIABILITIES AND EQUITY		(58,166)
Scenario, Previously Reported [Member]
Deferred policy acquisition costs		757,183	[1]
Income taxes receivable		70,425	[1]
TOTAL ASSETS		52,313,024	[1]
TOTAL LIABILITIES		51,234,281	[1]
Accumulated other comprehensive income (loss)		151,692	[1]
Retained earnings (accumulated deficit)		41,881	[1]
TOTAL EQUITY		1,078,743	[1]
TOTAL LIABILITIES AND EQUITY		$ 52,313,024	[1]

[1] “As previously reported” column represents balances reported in the Annual Report on Form 10-K for the year ended December 31, 2011, originally filed with the U.S. Securities and Exchange commission (“SEC”) on March 9, 2012. “As currently reported” column was included in the 8-K filed with the SEC on November 28, 2012.