Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Segment	Mar. 31, 2013
Reportable Segments [Abstract]
Number of reportable segments	2
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	$ 94,754	$ 83,891
Net Premiums Earned	63,842	61,098
Segment Profit	7,230	10,004
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	7,230	10,004
Net investment income	2,294	2,410
Net gains on investments	4,070	14,347
Corporate expenses	(4,155)	(4,082)
Income before federal income taxes	9,439	22,679
Property and Casualty Insurance [Member]
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	82,924	70,189
Net Premiums Earned	51,459	47,860
Segment Profit	5,342	5,234
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	5,342	5,234
Reinsurance [Member]
Segment Reporting Information [Line Items]
Direct and Assumed Premium Written	11,830	13,702
Net Premiums Earned	12,383	13,238
Segment Profit	1,888	4,770
Reconciliation from segment totals to consolidated [Abstract]
Segment profit	$ 1,888	$ 4,770