v3.3.1.900

Segment Information - Net Premiums (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | $ 2,662,825 | $ 2,507,352 | $ 2,204,159
Net premiums written | 2,514,116 | 2,458,136 | 2,096,301
Net premiums earned | $ 2,429,069 | $ 2,251,743 | $ 2,000,887
% of Total Net premiums written | 100.00% | 100.00% | 100.00%
% of Total Net premiums earned | 100.00% | 100.00% | 100.00%
Diversified Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | $ 776,852 | $ 897,748 | $ 848,790
Net premiums written | 734,781 | 850,049 | 763,374
Net premiums earned | $ 744,875 | $ 854,026 | $ 753,157
% of Total Net premiums written | 29.20% | 34.60% | 36.40%
% of Total Net premiums earned | 30.70% | 37.90% | 37.60%
AmTrust Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | $ 1,885,974 | $ 1,610,485 | $ 1,169,961
Net premiums written | 1,779,334 | 1,610,485 | 1,169,961
Net premiums earned | $ 1,684,191 | $ 1,378,327 | $ 988,900
% of Total Net premiums written | 70.80% | 65.50% | 55.80%
% of Total Net premiums earned | 69.30% | 61.20% | 49.40%
Other |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | $ (1) | $ (881) | $ 185,408
Net premiums written | 1 | (2,398) | 162,966
Net premiums earned | $ 3 | $ 19,390 | $ 258,830
% of Total Net premiums written | 0.00% | (0.10%) | 7.80%
% of Total Net premiums earned | 0.00% | 0.90% | 13.00%
Property | Diversified Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 160,939 | $ 160,308 | $ 145,292
Net premiums earned | $ 157,186 | $ 174,785 | $ 150,261
% of Total Net premiums written | 6.40% | 6.50% | 6.90%
% of Total Net premiums earned | 6.50% | 7.70% | 7.50%
Casualty | Diversified Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 435,625 | $ 535,518 | $ 473,732
Net premiums earned | $ 449,000 | $ 533,775 | $ 472,095
% of Total Net premiums written | 17.30% | 21.80% | 22.60%
% of Total Net premiums earned | 18.50% | 23.70% | 23.60%
Accident and Health | Diversified Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 64,102 | $ 38,870 | $ 35,340
Net premiums earned | $ 55,672 | $ 39,918 | $ 36,165
% of Total Net premiums written | 2.60% | 1.60% | 1.70%
% of Total Net premiums earned | 2.30% | 1.80% | 1.80%
International | Diversified Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 74,115 | $ 115,353 | $ 109,010
Net premiums earned | $ 83,017 | $ 105,548 | $ 94,636
% of Total Net premiums written | 2.90% | 4.70% | 5.20%
% of Total Net premiums earned | 3.40% | 4.70% | 4.70%
Small Commercial Business | AmTrust Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 1,057,968 | $ 857,576 | $ 572,006
Net premiums earned | $ 984,333 | $ 752,188 | $ 493,774
% of Total Net premiums written | 42.10% | 34.90% | 27.30%
% of Total Net premiums earned | 40.50% | 33.40% | 24.70%
Specialty Program | AmTrust Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 332,416 | $ 220,121 | $ 157,578
Net premiums earned | $ 290,209 | $ 175,286 | $ 140,478
% of Total Net premiums written | 13.20% | 8.90% | 7.50%
% of Total Net premiums earned | 11.90% | 7.80% | 7.00%
Specialty Risk and Extended Warranty | AmTrust Reinsurance segment |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Net premiums written | $ 388,950 | $ 532,788 | $ 440,377
Net premiums earned | $ 409,649 | $ 450,853 | $ 354,648
% of Total Net premiums written | 15.50% | 21.70% | 21.00%
% of Total Net premiums earned | 16.90% | 20.00% | 17.70%
North America |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | $ 2,165,309 | $ 1,979,768 | $ 1,742,333
Net premiums written | 2,038,444 | 1,934,644 | 1,638,844
Net premiums earned | 2,027,141 | 1,778,579 | 1,602,128
Other (predominantly Europe) |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Gross premiums written | 497,516 | 527,584 | 461,826
Net premiums written | 475,672 | 523,492 | 457,457
Net premiums earned | $ 401,928 | $ 473,164 | $ 398,759

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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 + Details
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