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Collateral Finance Facility (Narrative) (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Jun. 30, 2006
Collateral Finance Facility [Line Items] |  |  |  |
Direct investment in subsidiary |  |  |  | $ 112,800,000
Assets held in trust and held in custody | 913,500,000 | 909,200,000 |  |
Amount Held In Debt Service Coverage Account | 20,500,000 | 33,200,000 |  |
Collateral Financing Expense | 10,449,000 | 12,197,000 | 12,391,000 |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 35,000,000 |  |  |
Repurchased Subsidiary Debt | 160,000,000 |  | 198,500,000 |
Repayments of Secured Debt | 119,255,000 | 0 | 130,798,000 |
Gain on repurchase of long-term debt | 46,506,000 | 0 | 65,565,000 |
Timberlake Reinsurance Company [Member] |  |  |  |
Collateral Finance Facility [Line Items] |  |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 51,500,000 | 33,100,000 |  |
Timerberlake Financial [Member] |  |  |  |
Collateral Finance Facility [Line Items] |  |  |  |
Debt Instrument, Issuance Date | Jun. 01, 2006 |  |  |
Debt Instrument, Face Amount |  |  |  | 850,000,000.0
Collateral Financing Expense | 5,100,000 | 6,900,000 | 7,100,000 |
Repayments of Secured Debt | 112,000,000 |  | 130,800,000 |
Gain on repurchase of long-term debt | 46,500,000 |  | 65,600,000 |
Minimum [Member] |  |  |  |
Collateral Finance Facility [Line Items] |  |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | $ 35,000,000 |  |  |

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- Definition Represents the face amount of debt repurchased by the company that was originally issued by one of the company's subsidiaries. + References No definition available. + Details
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- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
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- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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