Investments (Details Textuals) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2014	Dec. 31, 2013
Investment [Abstract]
Condition for categorizing the impaired securities	$ 1,000,000
Condition for categorizing the impaired securities, percentage	10.00%
Weighted-average life of mortgage-backed and asset-backed securities, Years	5.7
Number of fixed maturity and equity securities held	2,750
Percentage of securities in unrealized loss position	28.00%
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ (62,839,000)	$ (105,221,000)

Condition for categorizing the impaired securities

No definition available.

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- Definition

Condition for categorizing the impaired securities, percentage

+ References

No definition available.

+ Details

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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- Definition

Weighted-average life of mortgage-backed and asset-backed securities in years.

+ References

No definition available.

+ Details

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- Definition

Amount of unrealized loss on securities classified as available-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

+ Details

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- Definition

Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired.

+ References

No definition available.

+ Details

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- Details

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