SEC Schedule III - Supplementary Insurance Information

12 Months Ended

Dec. 31, 2011

Supplementary Insurance Information [Abstract]

Supplementary Insurance Information, for Insurance Companies Disclosure [Text Block]

Safety Insurance Group, Inc.
Supplementary Insurance Information
Schedule III
(Dollars in thousands)

	As of December 31,
			Future Policy
	Deferred		Benefits,
	Policy		Losses,
	Acquisition		Claims and Loss		Unearned
Segment	Costs		Expenses		Premiums
Property and Casualty Insurance
2011	$	56,716	$	403,872	$	329,562
2010		52,824		404,391		306,053
2009		47,900		439,706		282,434


	Years Ended December 31,
					Benefits,
					Claims,						Amortization of
			Net		Losses, and		Other					Deferred Policy
	Premium		Investment		Settlement		Operating		Premiums			Acquisition
Segment	Revenue		Income		Expenses		Expenses		Written			Costs
Property and Casualty Insurance
2011	$	598,368	$	39,060	$	466,640	$	68,362	$	620,316	$	110,795
2010		551,950		41,395		360,848		70,843		576,807		101,980
2009		531,969		43,308		346,301		74,621		532,629		96,503

- Definition

The entire disclosure for required supplementary insurance information giving segment detail in support of various balance sheet and income statement captions. The balance sheet information generally is presented as of the date of each audited balance sheet filed, and the income statement information generally is presented for each period for which an audited income statement is required to be filed. Supplementary insurance information table includes segment name; deferred policy acquisition costs; future policy benefits, losses, claims and loss expenses; unearned premiums; other policy claims and benefits payable; premium revenue; net investment income; benefits, claims, losses and settlement expenses; amortization of deferred policy acquisition costs; other operating expenses; and premiums written.

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