XML 92 R77.htm IDEA: XBRL DOCUMENT v3.6.0.2
Reserve for Losses and Loss Adjustment Expenses - Historical Claims Duration (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Healthcare Professional Liability Claims-Made  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 5.20%
Historical claims duration, year 2 (percent) 20.10%
Historical claims duration, year 3 (percent) 22.80%
Historical claims duration, year 4 (percent) 16.00%
Historical claims duration, year 5 (percent) 10.00%
Historical claims duration, year 6 (percent) 5.70%
Historical claims duration, year 7 (percent) 4.50%
Historical claims duration, year 8 (percent) 2.60%
Historical claims duration, year 9 (percent) 1.90%
Historical claims duration, year 10 (percent) 0.70%
All outstanding liabilities, net of reinsurance $ 18,260
Healthcare Professional Liability Occurrence  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 0.50%
Historical claims duration, year 2 (percent) 6.20%
Historical claims duration, year 3 (percent) 13.00%
Historical claims duration, year 4 (percent) 14.90%
Historical claims duration, year 5 (percent) 15.70%
Historical claims duration, year 6 (percent) 10.40%
Historical claims duration, year 7 (percent) 9.10%
Historical claims duration, year 8 (percent) 4.10%
Historical claims duration, year 9 (percent) 3.90%
Historical claims duration, year 10 (percent) 1.10%
All outstanding liabilities, net of reinsurance $ 14,975
Medical technology liability  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 3.40%
Historical claims duration, year 2 (percent) 19.70%
Historical claims duration, year 3 (percent) 22.40%
Historical claims duration, year 4 (percent) 12.70%
Historical claims duration, year 5 (percent) 7.40%
Historical claims duration, year 6 (percent) 2.00%
Historical claims duration, year 7 (percent) 0.70%
Historical claims duration, year 8 (percent) 0.00%
Historical claims duration, year 9 (percent) 0.40%
Historical claims duration, year 10 (percent) 0.00%
All outstanding liabilities, net of reinsurance $ 1,038
Workers' compensation  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 31.70%
Historical claims duration, year 2 (percent) 36.10%
Historical claims duration, year 3 (percent) 16.10%
Historical claims duration, year 4 (percent) 7.60%
Historical claims duration, year 5 (percent) 4.00%
Historical claims duration, year 6 (percent) 1.70%
Historical claims duration, year 7 (percent) 0.80%
Historical claims duration, year 8 (percent) 0.30%
Historical claims duration, year 9 (percent) 0.60%
Historical claims duration, year 10 (percent) 0.10%
All outstanding liabilities, net of reinsurance $ 1,280
Lloyd's Syndicate Casualty  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 24.70%
Historical claims duration, year 2 (percent) 49.40%
Historical claims duration, year 3 (percent) 16.70%
Historical claims duration, year 4 (percent) 6.00%
Historical claims duration, year 5 (percent) 2.00%
Historical claims duration, year 6 (percent) 0.40%
Historical claims duration, year 7 (percent) 0.40%
Historical claims duration, year 8 (percent) 0.00%
Historical claims duration, year 9 (percent) 0.00%
Historical claims duration, year 10 (percent) 0.00%
All outstanding liabilities, net of reinsurance $ 0
Lloyd's Syndicate Property Insurance  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 80.80%
Historical claims duration, year 2 (percent) 15.50%
Historical claims duration, year 3 (percent) 2.50%
Historical claims duration, year 4 (percent) 0.60%
Historical claims duration, year 5 (percent) 0.30%
Historical claims duration, year 6 (percent) 0.10%
Historical claims duration, year 7 (percent) 0.10%
Historical claims duration, year 8 (percent) 0.00%
Historical claims duration, year 9 (percent) 0.00%
Historical claims duration, year 10 (percent) 0.00%
All outstanding liabilities, net of reinsurance $ 0
Lloyd's Syndicate Property Reinsurance  
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]  
Historical claims duration, year 1 (percent) 78.60%
Historical claims duration, year 2 (percent) 16.40%
Historical claims duration, year 3 (percent) 2.80%
Historical claims duration, year 4 (percent) 1.60%
Historical claims duration, year 5 (percent) 0.40%
Historical claims duration, year 6 (percent) 0.20%
Historical claims duration, year 7 (percent) 0.10%
Historical claims duration, year 8 (percent) 0.00%
Historical claims duration, year 9 (percent) 0.00%
Historical claims duration, year 10 (percent) 0.00%
All outstanding liabilities, net of reinsurance $ 0