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Investments, Part IV (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | $ 256,595 | $ 258,039
Derivative financial instrument [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Liabilities at fair value |  | 141
Fixed maturities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 223,539 | 230,508
Equity securities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 13,819 | 12,205
Cash equivalents [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 19,237 | 15,326
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 24,558 | 19,131
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Derivative financial instrument [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Liabilities at fair value |  | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed maturities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity securities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 5,321 | 3,805
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash equivalents [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 19,237 | 15,326
Significant Other Observable Inputs (Level 2) [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 229,945 | 236,784
Significant Other Observable Inputs (Level 2) [Member] | Derivative financial instrument [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Liabilities at fair value |  | 0
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 221,447 | 228,384
Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 8,498 | 8,400
Significant Other Observable Inputs (Level 2) [Member] | Cash equivalents [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 2,092 | 2,124
Significant Unobservable Inputs (Level 3) [Member] | Derivative financial instrument [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Liabilities at fair value |  | 141
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 2,092 | 2,124
Significant Unobservable Inputs (Level 3) [Member] | Equity securities [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | Cash equivalents [Member] |  |
Financial instruments carried at fair value measured on a recurring basis [Abstract] |  |
Assets at fair value | $ 0 | $ 0

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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