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Investments (Schedule of Components of Other Comprehensive Income and Reclassification Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	$ 2,993	$ 3,918	$ 3,416	$ 4,131
Other comprehensive income (loss) before reclassifications	(733)	(89)	(818)	(302)
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments			(338)
Net current-period other comprehensive income (loss)	(733)	(89)	(1,156)	(302)
Ending balance	2,260	3,829	2,260	3,829
Investments in other ventures
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	623	211	303	163
Other comprehensive income (loss) before reclassifications	(490)	213	(170)	261
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments			0
Net current-period other comprehensive income (loss)			(170)
Ending balance	133	424	133	424
Fixed maturity investments available for sale
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	2,370	3,707	3,113	3,968
Other comprehensive income (loss) before reclassifications	(243)	(302)	(648)	(563)
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments			(338)
Net current-period other comprehensive income (loss)			(986)
Ending balance	$ 2,127	$ 3,405	$ 2,127	$ 3,405

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Accumulated Other Comprehensive Income (Loss) RollForward [Roll Forward]

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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