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Investments (Details 2) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012
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Cost or Amortized cost [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Due in 2013 | $ 81,159
In 2014 through 2017 | 147,800
In 2018 through 2022 | 138,680
After 2022 | 126,906
Total, Amortized cost | 583,287
Fair Value [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Due in 2013, Fair value | 81,897
In 2014 through 2017, Fair value | 156,272
In 2018 through 2022, Fair value | 154,343
After 2022, Fair value | 136,588
Total, Fair Value | 627,349
U.S. agency-based mortgage-backed securities [Member] | Cost or Amortized cost [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Amortized cost | 32,984
U.S. agency-based mortgage-backed securities [Member] | Fair Value [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Fair Value | 36,042
Commercial mortgage-backed securities [Member] | Cost or Amortized cost [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Amortized cost | 51,529
Commercial mortgage-backed securities [Member] | Fair Value [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Fair Value | 57,962
Asset-backed securities [Member] | Cost or Amortized cost [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Amortized cost | 4,229
Asset-backed securities [Member] | Fair Value [Member] |
Summary of the cost or amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity, by contractual maturity |
Held-to-maturity, Fair Value | $ 4,245

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- Definition Amount of held-to-maturity debt securities at fair value maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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- Definition Amount of held-to-maturity debt securities at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -Subparagraph b -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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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- Definition Amount of held-to-maturity debt securities at fair value maturing after the tenth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -Subparagraph d -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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- Definition Amount of held-to-maturity debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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