Investments (Narrative or Textual) (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Other than Temporary Impairment Losses, Investments [Abstract]
Condition for categorizing the impaired securities	$ 1,000
Condition for categorizing the impaired securities, percentage	10.00%
Weighted-average life of mortgage-backed and asset-backed securities, Years	5.3
Number of fixed maturity and equity securities held	2,960
Percentage of securities in unrealized loss position	36.00%
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ (63,146)	$ (41,776)