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Background and Basis of Presentation (Details Textual) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 04, 2012
Dec. 31, 2011
Background and Basis of Presentation (Textual) [Abstract]      
Net par exposure for policies allocated to the segregated account $ 32,156,856    
Maximum limit for aggregate face amount of allowed and disputed general unsecured claims 50,000    
Amount shall have been paid or paid into escrow by the company 30,000    
Current cash and investments 33,876    
Restricted cash 2,500   2,500
Percentage of permitted policy claim 25.00%    
Principal amount 2,000,000    
Principal amount, outstanding 1,210,821    
Surplus notes repurchased 500,000    
Aggregate cash paid for repurchased notes 100,000    
Additional notes repurchased 289,179    
Cash paid for additional notes 88,446    
Repurchase of additional surplus notes pursuant to third call option   $ 150,000