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Statutory Balances and Accounting Practices
12 Months Ended
Dec. 31, 2015
Statutory Balances And Accounting Practices [Abstract]  
Statutory Balances and Accounting Practices
Statutory Balances and Accounting Practices
The Insurance Companies prepare their statutory-basis financial statements in conformity with accounting practices prescribed or permitted by the insurance departments of their domiciliary states. Prescribed statutory accounting practices primarily include those published as statements of statutory accounting principles by the National Association of Insurance Commissioners (the "NAIC"), as well as state laws, regulations, and general administrative rules. Permitted statutory accounting practices encompass all accounting practices not so prescribed. As of December 31, 2015, there were no material permitted statutory accounting practices utilized by the Insurance Companies.

The following table presents the statutory net income, and statutory capital and surplus of the Insurance Companies, as reported to regulatory authorities:
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(Amounts in thousands)
Statutory net income(1)
$
123,984

 
$
155,654

 
$
235,251

Statutory capital and surplus
$
1,451,950

 
$
1,438,281

 
$
1,528,682

 __________
(1)
Statutory net income reflects differences from GAAP net income, including changes in the fair value of the investment portfolio as a result of the application of the fair value option.

The Insurance Companies must comply with minimum capital requirements under applicable state laws and regulations. The RBC formula is used by insurance regulators to monitor capital and surplus levels. It was designed to capture the widely varying elements of risks undertaken by writers of different lines of insurance business having differing risk characteristics, as well as writers of similar lines where differences in risk may be related to corporate structure, investment policies, reinsurance arrangements, and a number of other factors. The Company periodically monitors the RBC level of each of the Insurance Companies. As of December 31, 2015, 2014, and 2013, each of the Insurance Companies exceeded the minimum required RBC levels, as determined by the NAIC and adopted by the state insurance regulators. None of the Insurance Companies’ RBC ratios was less than 375% of the authorized control level RBC as of December 31, 2015, 2014 and 2013 . Generally, an RBC ratio of 200% or less would require some form of regulatory or company action.