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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2016
Segment Reporting [Abstract] |
Summary of Financial Information by Reportable Segment | The following table is a summary of financial information by reportable business segment for the affected periods:
|  | Financial Guarantee |  | Financial Services |  | Corporate and Other |  | Inter-segment Eliminations |  | Consolidated
Three Months Ended March 31, 2016: |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 97,374 |  |  | $ | (83,214 | ) |  | $ | 1,610 |  |  | $ | — |  |  | $ | 15,770 |
Equity in net income of investees accounted for by equity method |  | — |  |  | — |  |  | 1,132 |  |  | — |  |  | 1,132 |
Inter-segment |  | (772 | ) |  | (338 | ) |  | 1,148 |  |  | (38 | ) |  | — |
Total revenues before expenses and reorganization items |  | 96,602 |  |  | (83,552 | ) |  | 3,890 |  |  | (38 | ) |  | 16,902 |
Pre-tax income (loss): |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1)(2)(3) |  | 98,417 |  |  | (83,847 | ) |  | (2,848 | ) |  | — |  |  | 11,722 |
Equity in net income of investees accounted for by equity method |  | — |  |  | — |  |  | 1,132 |  |  | — |  |  | 1,132 |
Inter-segment |  | (1,623 | ) |  | (454 | ) |  | 2,077 |  |  | — |  |  | — |
Pre-tax income (loss) |  | 96,794 |  |  | (84,301 | ) |  | 361 |  |  | — |  |  | 12,854 |
Total assets as of March 31, 2016 |  | 23,045,239 |  |  | 390,661 |  |  | 276,885 |  |  | 5,806 |  |  | 23,718,591 |
Net investment income |  | 57,713 |  |  | 203 |  |  | 2,905 |  |  | — |  |  | 60,821 |
Insurance intangible amortization |  | 50,890 |  |  | — |  |  | — |  |  | — |  |  | 50,890 |
Interest expense |  | 30,284 |  |  | 146 |  |  | — |  |  | — |  |  | 30,430 |
Three Months Ended March 31, 2015: |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 191,814 |  |  | $ | (37,708 | ) |  | $ | 357 |  |  | $ | — |  |  | $ | 154,463 |
Equity in net income of investees accounted for by equity method |  | — |  |  | — |  |  | 1,028 |  |  | — |  |  | 1,028 |
Inter-segment |  | 257 |  |  | (230 | ) |  | (27 | ) |  | — |  |  | — |
Total revenues before expenses and reorganization items |  | 192,071 |  |  | (37,938 | ) |  | 1,358 |  |  | — |  |  | 155,491 |
Pre-tax income (loss): |  |  |  |  |  |
Unaffiliated customers (1) (2) (3) |  | 256,005 |  |  | (38,580 | ) |  | (1,873 | ) |  | — |  |  | 215,552 |
Equity in net income of investees accounted for by equity method |  | — |  |  | — |  |  | 1,028 |  |  | — |  |  | 1,028 |
Inter-segment |  | (539 | ) |  | (312 | ) |  | 851 |  |  | — |  |  | — |
Pre-tax income (loss) |  | 255,466 |  |  | (38,892 | ) |  | 6 |  |  | — |  |  | 216,580 |
Total assets as of March 31, 2015 |  | 24,676,608 |  |  | 408,090 |  |  | 283,438 |  |  | 18,474 |  |  | 25,386,610 |
Net investment income |  | 71,470 |  |  | 128 |  |  | 1,385 |  |  | — |  |  | 72,983 |
Insurance intangible amortization |  | 37,432 |  |  | — |  |  | — |  |  | — |  |  | 37,432 |
Interest expense |  | 27,585 |  |  | 323 |  |  | — |  |  | — |  |  | 27,908 |
(1) | Included in both revenues from unaffiliated customers and in pre-tax income (loss) from unaffiliated customers is net investment income.
(2) | Included in pre-tax income (loss) from unaffiliated customers is interest expense.
(3) | Included in pre-tax income (loss) from unaffiliated customers is amortization of insurance intangible asset. Such assets were established upon the adoption of Fresh Start on April 30, 2013.
Schedule of Gross Premiums Written, Net Premiums Earned and Net Change in Fair Value of Credit Derivatives | The following table summarizes gross premiums written, net premiums earned and the net change in fair value of credit derivatives included in the Financial Guarantee segment by location of risk for the affected periods:
|  | Three Months Ended March 31, 2016 |  | Three Months Ended March 31, 2015
|  | Gross Premiums Written |  | Net Premiums Earned |  | Net Change in Fair Value of Credit Derivatives |  | Gross Premiums Written |  | Net Premiums Earned |  | Net Change in Fair Value of Credit Derivatives
United States |  | $ | (13,759 | ) |  | $ | 46,115 |  |  | $ | 855 |  |  | $ | (2,239 | ) |  | $ | 52,982 |  |  | $ | 3,958 |
United Kingdom |  | 9,352 |  |  | 6,388 |  |  | — |  |  | 9,174 |  |  | 7,582 |  |  | — |
Other international |  | (20,373 | ) |  | 297 |  |  | 12,011 |  |  | (5,873 | ) |  | 5,154 |  |  | (6,457 | )
Total |  | $ | (24,780 | ) |  | $ | 52,800 |  |  | $ | 12,866 |  |  | $ | 1,062 |  |  | $ | 65,718 |  |  | $ | (2,499 | )

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