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Fair Value of Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Financial Assets |  |  |  |
Beginning balance | $ 129,555 | $ 34,830 | $ 93,173 | $ 46,585
Transfers into Level 3 | 9,407 | 17,389 | 26,744 | 17,389
Transfers out of Level 3 | (45,460) | (2,335) | (50,707) | (13,725)
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income | 1,123 |  | 2,308 |
Net unrealized gains (losses) included in other comprehensive income | 2,734 | 961 | 1,111 | 847
Purchases | 25,000 |  | 50,000 |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities | (296) | (352) | (566) | (603)
Ending balance | 122,063 | 50,493 | 122,063 | 50,493
Corporate bonds [Member] |  |  |  |
Financial Assets |  |  |  |
Beginning balance | 89,920 | 33,557 | 88,256 | 45,244
Transfers into Level 3 | 9,407 | 17,389 | 18,240 | 17,389
Transfers out of Level 3 | (45,460) | (2,335) | (50,707) | (13,725)
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income |  |  |  |
Net unrealized gains (losses) included in other comprehensive income | 2,725 | 967 | 946 | 845
Purchases |  |  |  |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities | (133) | (293) | (276) | (468)
Ending balance | 56,459 | 49,285 | 56,459 | 49,285
Other mortgage-backed securities [Member] |  |  |  |
Financial Assets |  |  |  |
Beginning balance | 13,065 | 877 | 4,532 | 945
Transfers into Level 3 |  |  | 8,504 |
Transfers out of Level 3 |  |  |  |
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income |  |  |  |
Net unrealized gains (losses) included in other comprehensive income | 9 | 6 | 165 | 14
Purchases |  |  |  |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities | (163) | (59) | (290) | (135)
Ending balance | 12,911 | 824 | 12,911 | 824
Total Fixed Maturities [Member] |  |  |  |
Financial Assets |  |  |  |
Beginning balance | 102,985 | 34,434 | 92,788 | 46,189
Transfers into Level 3 | 9,407 | 17,389 | 26,744 | 17,389
Transfers out of Level 3 | (45,460) | (2,335) | (50,707) | (13,725)
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income |  |  |  |
Net unrealized gains (losses) included in other comprehensive income | 2,734 | 973 | 1,111 | 859
Purchases |  |  |  |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities | (296) | (352) | (566) | (603)
Ending balance | 69,370 | 50,109 | 69,370 | 50,109
Equity Securities [Member] |  |  |  |
Financial Assets |  |  |  |
Beginning balance | 385 | 396 | 385 | 396
Transfers into Level 3 |  |  |  |
Transfers out of Level 3 |  |  |  |
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income |  |  |  |
Net unrealized gains (losses) included in other comprehensive income |  | (12) |  | (12)
Purchases |  |  |  |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities |  |  |  |
Ending balance | 385 | 384 | 385 | 384
Other Investments [Member] |  |  |  |
Financial Assets |  |  |  |
Beginning balance | 26,185 |  |  |
Transfers into Level 3 |  |  |  |
Transfers out of Level 3 |  |  |  |
Total gain or losses |  |  |  |
Net realized gains (losses) included in net income | 1,123 |  | 2,308 |
Net unrealized gains (losses) included in other comprehensive income |  |  |  |
Purchases | 25,000 |  | 50,000 |
Issuances |  |  |  |
Sales |  |  |  |
Settlements |  |  |  |
Paydowns and maturities |  |  |  |
Ending balance | $ 52,308 |  | $ 52,308 |

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- Definition Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + 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 (c)(1a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Issues that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + 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 (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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