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Investments - Additional Information (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
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U.S. Treasury and U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Statutory deposit held in trust with Treasurer of Alabama | $ 112 | $ 113

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- Definition Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 320 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28366721&loc=d3e22002-158495 + Details
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- Definition Line items represent financial 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 No definition available. + Details
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- Details
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