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Reserve for Claims and Claim Expenses (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | $ 162,447 | $ 143,798 | $ 143,954
Claims and claim expenses recovered | (96,734) | (30,634) | (13,852)
Reinsurance balances payable |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Aggregate deposit liabilities | 32,300 | 39,000 |
Aggregate deposit assets |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Aggregate deposit assets | 0 | 0 |
Deposit Contracts, Underwriting Risk Only |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Claims and claim expenses recovered | 300 | 300 | 400
Deposit Contracts, Timing Risk Only |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Increase (decrease) in other income related to assumed reinsurance contracts | 6,200 | (100) | (100)
Catastrophe |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 71,191 | 92,366 | 111,496
Catastrophe | Large Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 33,978 | 65,537 | 94,527
Catastrophe | Storm Sandy (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 12,524 | 24,232 | 48,285
Catastrophe | April and May U.S. Tornadoes (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 10,189 | 13,939 |
Catastrophe | Hurricanes Gustav and Ike (2008) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 4,673 | 6,647 | 16,665
Catastrophe | 2011 International Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,383 |  |
Catastrophe | Deepwater Horizon (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 8,116 |  |
Catastrophe | Subprime (2007) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (8,459) | (5,049) |
Catastrophe | Thailand Floods (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 18,823 | 11,754 |
Catastrophe | New Zealand Earthquake (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (1,095) | (24,692) | (11,340)
Catastrophe | LIBOR (2011 and 2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 11,750 |
Catastrophe | Tohoku Earthquake and Tsunami (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 5,314 | 5,131 | 19,033
Catastrophe | New Zealand Earthquake (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (22,754) |  | 10,944
Catastrophe | Small Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 37,213 | 26,829 | 16,969
Catastrophe | 2014 U.S. Winter Storms and Wind and Thunderstorm Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 28,042 |  |
Catastrophe | U.S. PCS 24 Wind and Thunderstorm (2013) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 6,712 |
Catastrophe | U.S. PCS 70 Wind and Thunderstorm (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | (9,625) | (8,225)
Attritional Claims and Claim Expenses |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 91,256 | 51,432 | 32,458
Actual Reported Claims Less than Expected Claims |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 94,515 | 51,432 | 22,300
Actuarial Assumption Changes |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (3,259) |  | 10,158
Catastrophe Reinsurance |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 70,377 | 65,511 | 102,037
Catastrophe Reinsurance | Catastrophe |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 70,377 | 65,511 | 102,037
Catastrophe Reinsurance | Catastrophe | Large Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 31,598 | 47,506 | 85,068
Catastrophe Reinsurance | Catastrophe | Storm Sandy (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 10,436 | 20,104 | 44,460
Catastrophe Reinsurance | Catastrophe | April and May U.S. Tornadoes (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 10,189 | 13,939 |
Catastrophe Reinsurance | Catastrophe | Hurricanes Gustav and Ike (2008) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 4,673 | 6,647 | 16,261
Catastrophe Reinsurance | Catastrophe | 2011 International Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,383 |  |
Catastrophe Reinsurance | Catastrophe | Deepwater Horizon (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Catastrophe Reinsurance | Catastrophe | Subprime (2007) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Catastrophe Reinsurance | Catastrophe | Thailand Floods (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 18,823 | 9,254 |
Catastrophe Reinsurance | Catastrophe | New Zealand Earthquake (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (769) | (24,692) | (11,040)
Catastrophe Reinsurance | Catastrophe | LIBOR (2011 and 2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 |
Catastrophe Reinsurance | Catastrophe | Tohoku Earthquake and Tsunami (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 5,314 | 3,489 | 18,033
Catastrophe Reinsurance | Catastrophe | New Zealand Earthquake (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (22,754) |  | 10,944
Catastrophe Reinsurance | Catastrophe | Small Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 38,779 | 18,005 | 16,969
Catastrophe Reinsurance | Catastrophe | 2014 U.S. Winter Storms and Wind and Thunderstorm Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 28,042 |  |
Catastrophe Reinsurance | Catastrophe | U.S. PCS 24 Wind and Thunderstorm (2013) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 6,712 |
Catastrophe Reinsurance | Catastrophe | U.S. PCS 70 Wind and Thunderstorm (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | (9,625) | (8,225)
Catastrophe Reinsurance | Catastrophe | U.S. Wind and Thunderstorm Event, 2012 |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | (13,362) |
Catastrophe Reinsurance | Catastrophe | Other Large and Small Catastrophe Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 17,037 |  |
Catastrophe Reinsurance | Catastrophe Claims and Claim Expense Excluding Certain Specific Events [Member] |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  |  | 34,214
Catastrophe Reinsurance | Attritional Claims and Claim Expenses |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Catastrophe Reinsurance | Actual Reported Claims Less than Expected Claims |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Catastrophe Reinsurance | Actuarial Assumption Changes |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  | 0
Specialty Reinsurance |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 91,912 | 55,909 | 34,111
Specialty Reinsurance | Catastrophe |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,762 | 11,419 | 2,463
Specialty Reinsurance | Catastrophe | Large Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,762 | 11,419 | 2,463
Specialty Reinsurance | Catastrophe | Storm Sandy (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 2,088 | 0 | 0
Specialty Reinsurance | Catastrophe | April and May U.S. Tornadoes (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Specialty Reinsurance | Catastrophe | Hurricanes Gustav and Ike (2008) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Specialty Reinsurance | Catastrophe | 2011 International Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Specialty Reinsurance | Catastrophe | Deepwater Horizon (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 8,116 |  |
Specialty Reinsurance | Catastrophe | Subprime (2007) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (8,459) | (5,049) |
Specialty Reinsurance | Catastrophe | Thailand Floods (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 2,500 |
Specialty Reinsurance | Catastrophe | New Zealand Earthquake (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (326) | 0 | (300)
Specialty Reinsurance | Catastrophe | LIBOR (2011 and 2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 10,500 |
Specialty Reinsurance | Catastrophe | Tohoku Earthquake and Tsunami (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 1,642 | 1,000
Specialty Reinsurance | Catastrophe | New Zealand Earthquake (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  | 0
Specialty Reinsurance | Catastrophe | Small Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Specialty Reinsurance | Catastrophe | 2014 U.S. Winter Storms and Wind and Thunderstorm Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Specialty Reinsurance | Catastrophe | U.S. PCS 24 Wind and Thunderstorm (2013) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 |
Specialty Reinsurance | Catastrophe | U.S. PCS 70 Wind and Thunderstorm (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 | 0
Specialty Reinsurance | Attritional Claims and Claim Expenses |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 90,150 | 44,490 | 31,648
Specialty Reinsurance | Actual Reported Claims Less than Expected Claims |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 94,944 | 44,490 | 21,216
Specialty Reinsurance | Actuarial Assumption Changes |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (4,794) |  | 10,432
Specialty Reinsurance | Reported Claims Less than Expected Including Certain Catastrophe Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  |  | 23,679
Lloyd's |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (340) | 16,241 | 8,256
Lloyd's | Catastrophe |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (1,566) | 9,299 | 5,267
Lloyd's | Catastrophe | Large Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 6,612 | 5,267
Lloyd's | Catastrophe | Storm Sandy (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 4,128 | 3,825
Lloyd's | Catastrophe | April and May U.S. Tornadoes (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Lloyd's | Catastrophe | Hurricanes Gustav and Ike (2008) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Lloyd's | Catastrophe | 2011 International Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Lloyd's | Catastrophe | Deepwater Horizon (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Lloyd's | Catastrophe | Subprime (2007) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Lloyd's | Catastrophe | Thailand Floods (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Lloyd's | Catastrophe | New Zealand Earthquake (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Lloyd's | Catastrophe | LIBOR (2011 and 2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 1,250 |
Lloyd's | Catastrophe | Tohoku Earthquake and Tsunami (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Lloyd's | Catastrophe | New Zealand Earthquake (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  | 0
Lloyd's | Catastrophe | Small Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (1,566) | 2,687 | 0
Lloyd's | Catastrophe | 2014 U.S. Winter Storms and Wind and Thunderstorm Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Lloyd's | Catastrophe | U.S. PCS 24 Wind and Thunderstorm (2013) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 |
Lloyd's | Catastrophe | U.S. PCS 70 Wind and Thunderstorm (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 | 0
Lloyd's | Attritional Claims and Claim Expenses |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,226 | 6,942 | 2,989
Lloyd's | Actual Reported Claims Less than Expected Claims |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (309) | 6,942 | 3,263
Lloyd's | Actuarial Assumption Changes |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 1,535 |  | (274)
Other |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 498 | 6,137 | (450)
Other | Catastrophe |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 618 | 6,137 | 1,729
Other | Catastrophe | Large Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 618 | 0 | 1,729
Other | Catastrophe | Storm Sandy (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Other | Catastrophe | April and May U.S. Tornadoes (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Other | Catastrophe | Hurricanes Gustav and Ike (2008) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 404
Other | Catastrophe | 2011 International Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Other | Catastrophe | Deepwater Horizon (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Other | Catastrophe | Subprime (2007) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Other | Catastrophe | Thailand Floods (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 |
Other | Catastrophe | New Zealand Earthquake (2010) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Other | Catastrophe | LIBOR (2011 and 2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 |
Other | Catastrophe | Tohoku Earthquake and Tsunami (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 0 | 0
Other | Catastrophe | New Zealand Earthquake (2011) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  | 0
Other | Catastrophe | Small Catastrophe Event |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 | 6,137 | 0
Other | Catastrophe | 2014 U.S. Winter Storms and Wind and Thunderstorm Events |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | 0 |  |
Other | Catastrophe | U.S. PCS 24 Wind and Thunderstorm (2013) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 |
Other | Catastrophe | U.S. PCS 70 Wind and Thunderstorm (2012) |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses |  | 0 | 0
Other | Attritional Claims and Claim Expenses |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (120) | 0 | (2,179)
Other | Actual Reported Claims Less than Expected Claims |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | (120) | $ 0 | (2,179)
Other | Actuarial Assumption Changes |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Liability for unpaid claims and claim expenses | $ 0 |  | $ 0

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