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Insurance Operations - Assets Held by Insurance Regulators (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Restricted Cash and Cash Equivalents [Member] |  |
Statutory Accounting Practices [Line Items] |  |
Assets held by insurance regulators | $ 2,635 | $ 2,635
Investments [Member] |  |
Statutory Accounting Practices [Line Items] |  |
Assets held by insurance regulators | $ 3,910 | $ 3,952

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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=75027294&loc=d3e22002-158495 + Details
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- Details
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- Details
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