• Filing Date: 2018-03-07
  • Form Type: 10-K
  • Description: Annual report
v3.8.0.1
Losses and Loss Adjustment Expenses - Supplementary and Unaudited Information about Average Historical Claims Duration (Detail)
Dec. 31, 2017
Homeowners Multi-peril and Dwelling Fire Insurance [Member]  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 1 53.80%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 2 24.40%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 3 10.10%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 4 5.50%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 5 2.90%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 6 1.90%
Homeowners Wind-only Insurance [Member]  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 1 37.20%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 2 33.20%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 3 8.70%
Losses Specific to Any Hurricane Prior to 2017 [Member]  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 1 51.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 2 32.30%
Hurricane Irma [Member]  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance, Year 1 81.90%