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Investments (Schedule of Components of Other Comprehensive Income and Reclassification Out of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	$ 3,416us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax	$ 4,131us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Other comprehensive income (loss) before reclassifications	(23)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	(168)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	(51)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
Net current-period other comprehensive income (loss)	(74)us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Ending balance	3,342us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax	3,963us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Investments in other ventures
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	303us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember	163us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember
Other comprehensive income (loss) before reclassifications	109us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember	(3)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	0us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember
Net current-period other comprehensive income (loss)	109us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember
Ending balance	412us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember	160us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_EquityMethodInvestmentsMember
Fixed maturity investments available for sale
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	3,113us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember	3,968us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember
Other comprehensive income (loss) before reclassifications	(132)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember	(165)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	(51)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember
Net current-period other comprehensive income (loss)	(183)us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember
Ending balance	$ 2,930us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember	$ 3,803us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AvailableforsaleSecuritiesMember

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

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