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Investments (Schedule of Fair Value of Fixed Maturity Investments Available for Sale) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost | $ 0 | $ 15,943
Fixed maturity investments available-for-sale, Fair value | $ 0 | 17,813
Fixed maturity investments |  |
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost |  | 15,943
Gross Unrealized Gains |  | 1,870
Gross Unrealized Losses |  | 0
Fixed maturity investments available-for-sale, Fair value |  | 17,813
Non-Credit Other-Than-Temporary Impairments |  | 550
Agency mortgage-backed |  |
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost |  | 143
Gross Unrealized Gains |  | 7
Gross Unrealized Losses |  | 0
Fixed maturity investments available-for-sale, Fair value |  | 150
Non-Credit Other-Than-Temporary Impairments |  | 0
Non-agency mortgage-backed |  |
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost |  | 7,005
Gross Unrealized Gains |  | 1,523
Gross Unrealized Losses |  | 0
Fixed maturity investments available-for-sale, Fair value |  | 8,528
Non-Credit Other-Than-Temporary Impairments |  | 550
Commercial mortgage-backed |  |
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost |  | 6,578
Gross Unrealized Gains |  | 293
Gross Unrealized Losses |  | 0
Fixed maturity investments available-for-sale, Fair value |  | 6,871
Non-Credit Other-Than-Temporary Impairments |  | 0
Asset-backed |  |
Investment [Line Items] |  |
Fixed maturity investments available-for-sale, Amortized cost |  | 2,217
Gross Unrealized Gains |  | 47
Gross Unrealized Losses |  | 0
Fixed maturity investments available-for-sale, Fair value |  | 2,264
Non-Credit Other-Than-Temporary Impairments |  | $ 0

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- Definition Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Sentence Column A + Details
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- Definition Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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