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Liability for Unpaid Losses and Loss Adjustment Expenses - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Direct losses and loss adjustment expenses | $ 162,446 | $ 213,586 | $ 335,689 | $ 329,328
Ceded losses and loss adjustment expenses | 11,101 | 100,290 | 49,296 | 102,938
Incurred (recovered) related to prior years | 478 | $ 670 | 4,819 | $ 485
Hurricane |  |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Direct losses and loss adjustment expenses | 11,600 |  | 54,100 |
Ceded losses and loss adjustment expenses | 11,100 |  | 49,300 |
Incurred (recovered) related to prior years | $ 500 |  | $ 4,800 |

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- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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