Concentration of Operations (Tables)

12 Months Ended

Dec. 31, 2015

Text Block [Abstract]

Net Premiums Earned for the Different Lines of Business

Total net premiums earned for the different lines of business are shown below:

	2015				2014				2013
	Dollars		Percent		Dollars		Percent		Dollars		Percent
	(Dollars in thousands)
Workers’ compensation	$	375,894		100.0%	$	375,746		100.0%	$	329,986		100.0%
General liability		—		0.0%		1		0.0%		(3)		0.0%
Total net premiums earned	$	375,894		100.0%	$	375,747		100.0%	$	329,983		100.0%

Net Premiums Earned for the Top Ten States

Net premiums earned during 2015, 2014 and 2013 for the top ten states in 2015 and all others are shown below:

	2015				2014				2013
	Dollars		Percent		Dollars		Percent		Dollars		Percent
	(Dollars in thousands)
Georgia	$	40,497		10.8%	$	36,761		9.8%	$	30,096		9.1%
Louisiana		38,874		10.3		47,643		12.7		42,110		12.8
Pennsylvania		36,294		9.7		35,488		9.4		28,880		8.8
Florida		24,792		6.6		20,691		5.5		12,950		3.9
Illinois		23,285		6.2		20,606		5.5		18,445		5.6
North Carolina		20,062		5.3		20,872		5.6		21,019		6.4
Virginia		15,656		4.2		16,764		4.5		15,751		4.8
Texas		15,226		4.0		14,846		4.0		14,949		4.5
Minnesota		14,618		3.9		13,159		3.5		10,470		3.2
Oklahoma		13,420		3.6		16,599		4.4		17,473		5.3
All others		133,170		35.4		132,318		35.1		117,840		35.6
Total net premiums earned	$	375,894		100.0%	$	375,747		100.0%	$	329,983		100.0%