Investments (Schedule of Amounts Related to Credit Losses on Debt Securities for which Portion of the OTTI was Recognized in Other Comprehensive Income) (Details) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2010	Jun. 30, 2010
Investments
Beginning balance of credit losses	$ 1,264	$ 1,096
Additions for credit loss for which OTTI was not previously recognized		168
Reductions for securities sold during the period (realized)
Reductions for OTTI previously recognized due to intent to sell
Additions resulting from the increase in credit losses
Reductions resulting from the improvement in expected cash flows
Ending balance of credit losses	$ 1,264	$ 1,264

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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This item represents reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis.

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