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Net Investment Income (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Schedule of Investment Income, Reported Amounts, by Category [Line Items] | ||||
| Gross investment income | $ 18,630 | $ 14,817 | $ 49,827 | $ 42,651 |
| Less: Investment expenses and interest expense on securities sold under agreement to repurchase | 201 | 361 | 536 | 836 |
| Net investment income | 18,429 | 14,456 | 49,291 | 41,815 |
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Fixed maturities
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| Schedule of Investment Income, Reported Amounts, by Category [Line Items] | ||||
| Gross investment income | 18,185 | 13,601 | 47,908 | 39,577 |
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Equity securities
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| Schedule of Investment Income, Reported Amounts, by Category [Line Items] | ||||
| Gross investment income | 325 | 141 | 823 | 427 |
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Cash and cash equivalents
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| Schedule of Investment Income, Reported Amounts, by Category [Line Items] | ||||
| Gross investment income | $ 120 | $ 1,075 | $ 1,096 | $ 2,647 |