Schedule VI - Supplemental Information Concerning Property and Casualty Insurance Operations (Details) (Consolidated Property & Casualty Subsidiaries, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Property & Casualty Subsidiaries
Supplemental Information Concerning Property and Casualty Insurance Operations
Deferred Policy Acquisition Costs	$ 63,388	$ 60,665	$ 56,716
Reserves for Unpaid Claims and Claims Adjustment Expenses	455,014	423,842	403,872
Unearned Premiums	370,583	353,219	329,562
Earned Premiums	681,870	642,469	598,368
Net Investment Income	43,054	40,870	39,060
Claims and Claims Adjustment Expenses Incurred Related to Current Year	476,638	439,527	503,323
Claims and Claims Adjustment Expenses Incurred Related to Prior Year	(28,889)	(17,310)	(36,683)
Amortization of Deferred Policy Acquisition Costs	126,201	118,850	110,795
Paid Claims and Claims Adjustment Expenses	424,738	402,658	465,786
Premiums Written	$ 697,540	$ 663,942	$ 620,316