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Investments - Investment Income Summarized (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income |  |  | $ (462) |
Investment income, Total | $ 1,795 | $ 1,481 | 3,204 | $ 2,540
Limited Partnership Investment [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income | (197) |  | (462) |
Real Estate Investments [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment expense | 62 | (119) | (21) | (403)
Cash and Cash Equivalents [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income | 162 | 185 | 297 | 359
Other [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income | 15 |  | 29 |
Available-for-Sale Securities [Member] | Fixed-Maturity Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income | 1,051 | 1,055 | 1,877 | 2,052
Available-for-Sale Securities [Member] | Equity Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment income | 869 | 484 | 1,796 | 741
Available-for-Sale Securities [Member] | Investment Expense [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Investment expense | $ (167) | $ (124) | $ (312) | $ (209)

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- Definition Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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