Concentration of Operations (Tables)

12 Months Ended

Dec. 31, 2012

Concentration of Operations [Abstract]

Net premiums earned for the different lines of business

	2012					2011					2010
	Dollars		Percent			Dollars		Percent			Dollars		Percent
	(Dollars in thousands)
Workers’ compensation	$	290,538		99.9	%	$	249,966		99.6	%	$	217,810		99.5	%
General liability		151		0.1	%		1,049		0.4	%		1,071		0.5	%
Total net premiums earned	$	290,689		100.0	%	$	251,015		100.0	%	$	218,881		100.0	%

Net premiums earned for the top ten states

	2012					2011					2010
	Dollars		Percent			Dollars		Percent			Dollars		Percent
	(Dollars in thousands)
Louisiana	$	31,134		10.7	%	$	28,157		11.2	%	$	23,406		10.7	%
Georgia		25,033		8.6			21,496		8.6			19,308		8.8
Pennsylvania		24,480		8.4			19,265		7.7			16,784		7.7
North Carolina		20,036		6.9			17,071		6.8			17,038		7.8
Illinois		18,119		6.2			14,673		5.8			14,294		6.5
Oklahoma		16,157		5.6			16,037		6.4			14,544		6.6
Virginia		16,144		5.6			15,660		6.2			13,680		6.3
Texas		11,687		4.0			11,073		4.4			8,858		4.0
Kansas		10,925		3.8			9,486		3.8			7,126		3.3
Minnesota		10,094		3.5			9,388		3.7			7,887		3.6
All others		106,880		36.7			88,709		35.4			75,956		34.7
Total net premiums earned	$	290,689		100.0	%	$	251,015		100.0	%	$	218,881		100.0	%