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Other	9 Months Ended
Other	Sep. 30, 2017
Debt and Other Disclosures [Abstract]
Debt Disclosure	Debt At September 30, 2017, short-term debt consisted entirely of our senior unsecured notes due in the third quarter of 2018. Also included in the carrying amount of short-term debt are deferred debt costs of $0.1 million. During the nine months ended September 30, 2017, we made principal payments of $45.0 million on our senior secured non-recourse notes issued by Northwind Holdings, LLC. In June 2017, we purchased and retired the remaining $3.4 million of principal on our senior secured floating rate notes acquired through our purchase of Starmount. In conjunction with this retirement, we also terminated the interest rate swap associated with the hedge of these notes and recorded a $0.1 million loss in our consolidated statements of income as a component of net realized investment gains and losses. See Note 5 for further discussion. At September 30, 2017, letters of credit totaling $2.1 million had been issued from the credit facility, but there were no borrowed amounts outstanding.
Income Tax Disclosure	Income Tax As of September 30, 2017, we have net operating loss carryforwards for state income tax of $155.4 million which will expire between 2017 and 2037, as compared to $156.4 million in the third quarter of 2016. We recorded a deferred tax asset for future state income tax benefits of $18.0 million and $16.0 million as of September 30, 2017 and 2016, respectively. We have a corresponding valuation allowance on the deferred tax asset of $15.7 million and $14.1 million as of September 30, 2017 and 2016, respectively, to reduce the deferred tax asset to the amount that is more likely than not to be realized. During the third quarter of 2016, the U.K. government enacted an income tax rate reduction that will reduce the rate to 17 percent effective April 2020. Prior to this enactment, the rate had been scheduled to reduce to 18 percent in 2020. We are required to adjust deferred tax assets and liabilities through income on the date of enactment of a rate change. As a result, we recorded income tax benefits of $4.5 million during the third quarter of 2016.