Nature of Operations	12 Months Ended
Dec. 31, 2011
Nature of Operations	1. Nature of Operations AmTrust Financial Services, Inc. (the “Company”) is an insurance holding company formed under the laws of Delaware. Through its wholly-owned subsidiaries, the Company provides specialty property and casualty insurance focusing on workers’ compensation and commercial package coverage for small business, specialty risk and extended warranty coverage, and property and casualty coverage for middle market business. The Company also provides reinsurance, primarily on personal and commercial automotive business. The Company transacts business through eleven insurance company subsidiaries: Technology Insurance Company, Inc. (“TIC”), Rochdale Insurance Company (“RIC”), Wesco Insurance Company (“WIC”), Associated Industries Insurance Company, Inc. (“AIIC”), Milwaukee Casualty Insurance Company (“MCIC”), Security National Insurance Company (“SNIC”), AmTrust Insurance Company of Kansas, Inc. (“AICK”) and AmTrust Lloyd’s Insurance Company of Texas (“ALIC”), which are domiciled in New Hampshire, New York, Delaware, Florida, Wisconsin, Texas, Kansas and Texas, respectively; and AmTrust International Insurance Ltd. (“AII”), AmTrust International Underwriters Limited (“AIU”) and AmTrust Europe, Ltd. (“AEL”), which are domiciled in Bermuda, Ireland and England, respectively.

Nature of Operations

12 Months Ended

Dec. 31, 2011

1. Nature of Operations

AmTrust Financial Services, Inc. (the “Company”) is an insurance holding company formed under the laws of Delaware. Through its wholly-owned subsidiaries, the Company provides specialty property and casualty insurance focusing on workers’ compensation and commercial package coverage for small business, specialty risk and extended warranty coverage, and property and casualty coverage for middle market business. The Company also provides reinsurance, primarily on personal and commercial automotive business.

The Company transacts business through eleven insurance company subsidiaries: Technology Insurance Company, Inc. (“TIC”), Rochdale Insurance Company (“RIC”), Wesco Insurance Company (“WIC”), Associated Industries Insurance Company, Inc. (“AIIC”), Milwaukee Casualty Insurance Company (“MCIC”), Security National Insurance Company (“SNIC”), AmTrust Insurance Company of Kansas, Inc. (“AICK”) and AmTrust Lloyd’s Insurance Company of Texas (“ALIC”), which are domiciled in New Hampshire, New York, Delaware, Florida, Wisconsin, Texas, Kansas and Texas, respectively; and AmTrust International Insurance Ltd. (“AII”), AmTrust International Underwriters Limited (“AIU”) and AmTrust Europe, Ltd. (“AEL”), which are domiciled in Bermuda, Ireland and England, respectively.