Property and Casualty Unpaid Claims and Claim Expenses (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and Casualty Unpaid Claims and Claim Expenses (Textual) [Abstract]
Benefits, claims and settlement expenses	$ 468,426	$ 448,317	$ 448,250
Property and Casualty Unpaid Claims and Claim Expenses (Additional Textual) [Abstract]
Favorable development of total reserves for property and casualty claims occurring in prior years	17,000	17,988	17,175
Automobile liability coverage reserves as percentage of total reserves	70.00%
Short tail coverage reserves as percentage of total reserves	20.00%
Long tail coverage reserves as percentage of total reserves	80.00%
Potential variability of property and casualty loss reserves	6.00%
Potential variability of property and casualty loss reserves plus minus of net income	10,000
Life and Annuity [Member]
Property and Casualty Unpaid Claims and Claim Expenses (Textual) [Abstract]
Unpaid claims and claim expenses	14,687	15,818	14,853	13,729
Benefits, claims and settlement expenses	$ 68,914	$ 62,716	$ 58,820