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Financial Guarantees in Force (Tables) | 12 Months Ended
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Dec. 31, 2012
Summary of Financial Guarantee Portfolio Diversification by Type of Guaranteed Bond | As of December 31, 2012 and 2011, the guarantee portfolio was diversified by type of guaranteed bond as shown in the following table:
|  | Net Par Amount Outstanding |
|  | 2012 |  |  | 2011 |
Public Finance: |  |  |  |  |  |  |  |
Lease and tax-backed revenue |  | $ | 50,415,000 |  |  | $ | 59,864,000 |
General obligation |  |  | 34,623,000 |  |  |  | 42,959,000 |
Utility revenue |  |  | 18,651,000 |  |  |  | 22,529,000 |
Transportation revenue |  |  | 13,892,000 |  |  |  | 18,945,000 |
Higher education |  |  | 10,382,000 |  |  |  | 13,618,000 |
Housing revenue (1) |  |  | 8,176,000 |  |  |  | 8,823,000 |
Health care revenue |  |  | 5,266,000 |  |  |  | 7,824,000 |
Other |  |  | 1,613,000 |  |  |  | 2,255,000 |
Total Public Finance |  |  | 143,018,000 |  |  |  | 176,817,000 |
Structured Finance: |  |  |  |  |  |  |  |
Mortgage-backed and home equity |  |  | 19,117,000 |  |  |  | 23,164,000 |
Investor-owned utilities |  |  | 7,071,000 |  |  |  | 9,049,000 |
Other CDOs |  |  | 5,941,000 |  |  |  | 8,060,000 |
Student loan |  |  | 5,411,000 |  |  |  | 7,824,000 |
Asset-backed (2) |  |  | 2,905,000 |  |  |  | 4,732,000 |
Other |  |  | 1,914,000 |  |  |  | 2,316,000 |
Total Structured Finance |  |  | 42,359,000 |  |  |  | 55,145,000 |
International Finance: |  |  |  |  |  |  |  |
Investor-owned and public utilities |  |  | 10,314,000 |  |  |  | 10,510,000 |
Asset-backed (2) |  |  | 8,702,000 |  |  |  | 9,560,000 |
Sovereign/sub-sovereign |  |  | 7,289,000 |  |  |  | 7,282,000 |
Transportation |  |  | 6,002,000 |  |  |  | 5,914,000 |
Other CDOs |  |  | 3,191,000 |  |  |  | 4,375,000 |
Mortgage-backed and home equity |  |  | 1,268,000 |  |  |  | 1,397,000 |
Other |  |  | 1,490,000 |  |  |  | 1,504,000 |
Total International Finance |  |  | 38,256,000 |  |  |  | 40,542,000 |
Total |  | $ | 223,633,000 |  |  | $ | 272,504,000 |
(1) | Includes $6,324,000 and $6,373,243 of military housing net par at December 31, 2012 and 2011, respectively.
(2) | At December 31, 2012, all asset-backed net par amounts outstanding relate to commercial asset-based transactions.
Summary of International Finance Guaranteed Portfolio | As of December 31, 2012 and 2011, the International Finance guaranteed portfolio is shown in the following table by location of risk:
|  | Net Par Amount Outstanding |
|  | 2012 |  |  | 2011 |
United Kingdom |  | $ | 22,585,000 |  |  | $ | 22,317,000 |
Australia |  |  | 4,820,000 |  |  |  | 5,176,000 |
Italy |  |  | 3,068,000 |  |  |  | 3,346,000 |
Austria |  |  | 943,000 |  |  |  | 956,000 |
Germany |  |  | 598,000 |  |  |  | 619,000 |
Internationally diversified (1) |  |  | 3,968,000 |  |  |  | 5,318,000 |
Other international |  |  | 2,274,000 |  |  |  | 2,810,000 |
Total International Finance |  | $ | 38,256,000 |  |  | $ | 40,542,000 |
(1) | Internationally diversified obligations represent pools of geographically diversified exposures which includes significant components of domestic exposure.

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