Subsequent Events	9 Months Ended
Sep. 30, 2012
Subsequent Events	15. Subsequent Events Broadbill Partners LP et al. v. Ambac Assurance Corporation (Supreme Court of the State of New York, County of New York, filed November 8, 2012). Plaintiffs, owners of Ambac Assurance preferred stock, commenced litigation against Ambac Assurance asserting claims for breach of contract and unjust enrichment related to Ambac Assurance’s exercise of rights under put option agreements with certain trusts. Plaintiffs allege that as a result of the improper exercise of such rights, Ambac Assurance received approximately $800 million in trust assets in exchange for nearly worthless shares of preferred stock, which was delivered to the holders of beneficial interests in the trusts. Plaintiffs seek damages, the imposition of a constructive trust, rescission and attorney’s fees.

Subsequent Events

9 Months Ended

Sep. 30, 2012

15. Subsequent Events

Broadbill Partners LP et al. v. Ambac Assurance Corporation (Supreme Court of the State of New York, County of New York, filed November 8, 2012). Plaintiffs, owners of Ambac Assurance preferred stock, commenced litigation against Ambac Assurance asserting claims for breach of contract and unjust enrichment related to Ambac Assurance’s exercise of rights under put option agreements with certain trusts. Plaintiffs allege that as a result of the improper exercise of such rights, Ambac Assurance received approximately $800 million in trust assets in exchange for nearly worthless shares of preferred stock, which was delivered to the holders of beneficial interests in the trusts. Plaintiffs seek damages, the imposition of a constructive trust, rescission and attorney’s fees.