XML 145 R137.htm IDEA: XBRL DOCUMENT v2.4.0.6
Reinsurance - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 1 Months Ended 12 Months Ended
Apr. 07, 2011
Sep. 30, 2012
Sep. 30, 2011
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]      
Fair value of insurance transferred assets net of ceding commission $ 653,684 $ 535,826  
Capital contribution 250    
Subordinated debt 95,000    
Statutory reserve 535,000    
Upfront structuring Fee 13,750    
Fair value of insurance transferred assets   580,683  
Pre tax gain on reinsurance transactions deferred   18,029  
Reinsurance expense   4,004 1,809
Upfront structuring Fee 13,750    
Nomura [Member]
      
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]      
Upfront structuring Fee   2,800  
Reserve financing facility   295,000  
Upfront structuring Fee   $ 2,800