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Reinsurance - Schedule of Unsecured Reinsurance Recoverables from Reinsurers (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | $ 91,077 | $ 85,888
Letters of credit and funds held | (53,572) |
Total unsecured reinsurance recoverables | 37,505 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Hannover Reinsurance (Ireland) Limited (A+) [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | 35,530 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Odyssey America Reinsurance Corporation (A) [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | 12,127 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Minnesota Workers' Compensation Reinsurance Association (NR) [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | 9,034 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Tokio Millenium Reinsurance Limited (A++) [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | 7,294 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Clearwater Insurance Company (bbb) [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | 5,610 |
Reinsurance Recoverable [Member] | Reinsurer Concentration Risk [Member] | Other Reinsurers [Member] |  |
Ceded Credit Risk [Line Items] |  |
Total reinsurance recoverables | $ 21,482 |

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- Definition Letters of credit from the reinsurer and Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations there under. + References No definition available. + Details
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- Definition Unsecured Reinsurance Recoverables Net + References No definition available. + 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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- Definition Amount after valuation allowance recoverable including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6480758&loc=d3e6824-158387 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),6) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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