Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation. We prepare our financial statements in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). These principles are established primarily by the Financial Accounting Standards Board ("FASB"). The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect financial statement balances, revenues and expenses and cash flows, as well as the disclosure of contingent assets and liabilities. Management considers available facts and knowledge of existing circumstances when establishing the estimates included in our financial statements. The accompanying unaudited condensed consolidated financial statements contain all adjustments, generally consisting of normal recurring accruals, which are necessary to fairly present the balance sheets as of September 30, 2016 and December 31, 2015 and the statements of income and comprehensive income (loss) for the three and nine months ended September 30, 2016 and 2015, and the statements of stockholders' equity and cash flows for the nine months ended September 30, 2016 and 2015. Results of operations for interim periods are not necessarily indicative of results for the entire year or of the results to be expected in future periods. These unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are sufficient to make the information not misleading. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto that are included in our Annual Report on Form 10-K for the year ended December 31, 2015 ("2015 Annual Report").
Use of Estimates	Use of Estimates. The most significant items that involve a greater degree of accounting estimates and actuarial determinations subject to change in the future are the valuation of investments, deferred policy acquisition costs ("DAC"), liabilities for future policy benefits and unpaid policy claims, and income taxes. Estimates for these and other items are subject to change and are reassessed by management in accordance with U.S. GAAP. Actual results could differ from those estimates.
Consolidation	Consolidation. The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and those entities required to be consolidated under applicable accounting standards. All material intercompany profits, transactions, and balances among the consolidated entities have been eliminated.
Reclassifications	Reclassifications. Certain reclassifications have been made to prior-period amounts to conform to current-period reporting classifications. These reclassifications had no impact on net income or total stockholders' equity.
Subsequent Events	Subsequent Events. The Company has evaluated subsequent events for recognition and disclosure for occurrences and transactions after the date of the unaudited condensed consolidated financial statements dated as of September 30, 2016.
Significant Accounting Policies	Significant Accounting Policies. All significant accounting policies remain unchanged from the 2015 Annual Report.
New Accounting Principles	Future Application of Accounting Standards. Recent accounting guidance not discussed is not applicable, is immaterial to our financial statements, or did not or is not expected to have a material impact on our business. For additional information on new accounting pronouncements and recent accounting principles and their impact, if any, on our financial position or results of operations, see Note 1 (Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies) in our 2015 Annual Report and in the unaudited condensed consolidated financial statements included in our Quarterly Report on Form 10-Q for the quarterly periods ended March 31, 2016 and June 30, 2016.