Federal Income Taxes	6 Months Ended
Jun. 30, 2012
Notes to Financial Statements [Abstract]
Federal Income Taxes	6. Federal Income Taxes The effective tax rate is a ratio of tax expense over pre-tax income (loss). The effective tax rate was 27% and 24% for the three and six months ended June 30, 2012, respectively. The effective tax rate was 26% for the three and six months ended June 30, 2011. The effective tax rate on pre-tax income from continuing operations was lower than the prevailing corporate federal income tax rate. Differences in the effective rates and the U.S. statutory rate of 35% were the result of certain tax preferred investment income, separate account dividends-received deduction, foreign tax credits and other tax preference items.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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