Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Segment	Sep. 30, 2013
Reportable Segments [Abstract]
Number of reportable segments			2
Segment Reporting Information [Line Items]
Net Premiums Earned	$ 65,947	$ 64,448	$ 192,694	$ 187,321
Reconciliation from segment totals to consolidated [Abstract]
Income before federal income taxes	8,548	11,692	32,024	41,633
Operating Segments [Member]
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	94,591	96,550	284,443	273,271
Net Premiums Earned	65,947	64,448	192,694	187,321
Segment Profit (Loss)	8,614	11,558	23,922	29,878
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	8,614	11,558	23,922	29,878
Operating Segments [Member] | Property and Casualty Insurance [Member]
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	84,644	82,272	253,394	233,217
Net Premiums Earned	57,097	52,036	163,613	149,699
Segment Profit (Loss)	9,520	9,712	23,726	20,353
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	9,520	9,712	23,726	20,353
Operating Segments [Member] | Reinsurance [Member]
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	9,947	14,278	31,049	40,054
Net Premiums Earned	8,850	12,412	29,081	37,622
Segment Profit (Loss)	(906)	1,846	196	9,525
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	(906)	1,846	196	9,525
Segment Reconciling Items [Member]
Reconciliation from segment totals to consolidated [Abstract]
Net investment income	2,073	2,192	6,456	6,587
Net gains on investments	658	1,430	12,817	16,496
Corporate expenses and other	$ (2,797)	$ (3,488)	$ (11,171)	$ (11,328)