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Investments (Details 4) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Proceeds received from sales of fixed maturities and equity securities |  |  |  |
Proceeds received, Fixed maturity securities | $ 114,804 | $ 121,228 | $ 213,986 | $ 279,529
Proceeds received, Equity securities | 6,299 | 915 | 11,133 | 924
Fixed Maturity Securities [Member] |  |  |  |
Proceeds received from sales of fixed maturities and equity securities |  |  |  |
Gross gains realized | 9,878 | 8,471 | 14,390 | 17,362
Gross losses realized | (471) | (2,684) | (481) | (11,829)
Equity Securities [Member] |  |  |  |
Proceeds received from sales of fixed maturities and equity securities |  |  |  |
Gross gains realized | 2,776 | 8 | 3,344 | 17
Gross losses realized | $ (172) | $ (76) | $ (387) | $ (76)

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