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Investments - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
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

X

- 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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X

- 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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X

- Details

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