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Investments (Number of Securities in an Unrealized Unrecognized Loss Position) (Details) (USD $)													9 Months Ended
	Sep. 30, 2014 Securities	Dec. 31, 2013 Securities	Sep. 30, 2014 Eighty Percent to Ninety-Nine Percent [Member] Securities	Dec. 31, 2013 Eighty Percent to Ninety-Nine Percent [Member] Securities	Sep. 30, 2014 Sixty Percent to Seventy-Nine Percent [Member] Securities	Dec. 31, 2013 Sixty Percent to Seventy-Nine Percent [Member] Securities	Sep. 30, 2014 Forty Percent to Fifty-Nine Percent [Member] Securities	Dec. 31, 2013 Forty Percent to Fifty-Nine Percent [Member] Securities	Sep. 30, 2014 Twenty Percent to Thirty-Nine Percent [Member] Securities	Dec. 31, 2013 Twenty Percent to Thirty-Nine Percent [Member] Securities	Sep. 30, 2014 Zero Percent to Nineteen Percent [Member] Securities	Dec. 31, 2013 Zero Percent to Nineteen Percent [Member] Securities	Sep. 30, 2014 10 year U.S. Treasury Note [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position	406	557	404	556	2	1	0	0	0	0	0	0
Unrealized Unrecognized Loss	$ 19,257,000	$ 52,011,000	$ 16,417,000	$ 51,835,000	$ 2,840,000	$ 176,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Decrease of Yield on 10-year U.S. Treasury Note													54
Securities In Unrealized Unrecognized Loss Position For More Than Twelve Months Unrealized Unrecognized Loss	$ 13,200,000	$ 2,900,000
Percentage Decline in Fair Value Percentage	3.00%	6.00%

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- Definition

Increase (decrease) in basis points of the stated interest rate on the debt instrument.

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- Definition

This item contains disclosure of the number of available-for-sale and held-to-maturity securities determined to be in an unrealized/unrecognized loss position.

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No definition available.

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- Definition

This item represents the percentage decline in fair value of fixed maturity securities compared to amortized cost that have been in a loss position for more than twelve months. This impairment has been determined to be temporary.

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- Definition

Represents total unrealized and unrecognized losses of all available-for-sale and held-to-maturity securities in an unrealized and unrecognized loss position for more than 12 months as of the end of the period.

+ References

No definition available.

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- Definition

This item represents the sum of (i) the excess of amortized cost over fair value for available-for-sale securities that are in a loss position and (ii) the market fluctuations on held-to-maturity securities from the later of (a) the date a security is designated as held-to-maturity; or (b) the date that an other-than-temporary impairment charge is recognized on a held-to-maturity security for securities that are in an unrecognized loss position.

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No definition available.

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