Schedule III. Supplementary Insurance Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Supplementary Insurance Information, by Segment [Line Items]
Deferred Policy Acquisition Costs	$ 150,092		$ 105,300		$ 106,654
Future Policy Benefits, Losses, Claims and Loss Expenses	2,432,783		2,470,087		2,421,332
Unearned Premiums	340,464		311,650		288,991
Earned Premium Revenue	754,846		694,994		586,783
Investment Income, Net	112,799		111,905		109,494
Benefits, Claims, Losses and Settlement Expenses	496,439		502,801		462,956
Amortization of Deferred Policy Acquisition Costs	153,677	[1]	141,834	[1]	153,176	[1]
Other Underwriting Expense	89,861		81,125		58,757
Interest on Policyholders' Accounts	35,163		41,409		42,834
Premiums Written	722,821	[2]	655,331	[2]	551,923	[2]
Amortization of the value of business acquired asset	0		1,673		25,763
Mercer Insurance Group [Member]
Supplementary Insurance Information, by Segment [Line Items]
Amortization of the value of business acquired asset			1,673		25,763
Property and Casualty Insurance [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Policy Acquisition Costs	67,663		64,947		60,668
Future Policy Benefits, Losses, Claims and Loss Expenses	960,651		971,911		945,051
Unearned Premiums	340,387		311,561		288,868
Earned Premium Revenue	694,192		629,411		533,771
Investment Income, Net	46,332		41,879		35,513
Benefits, Claims, Losses and Settlement Expenses	437,354		439,137		407,831
Amortization of Deferred Policy Acquisition Costs	147,175		134,444	[1]	143,952	[1]
Other Underwriting Expense	73,626		63,620		46,404
Interest on Policyholders' Accounts	0		0		0
Premiums Written	722,821		655,331	[2]	551,923	[2]
Amortization of the value of business acquired asset	0		1,673		25,763
Life Insurance [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Policy Acquisition Costs	82,429		40,353	[3]	45,986	[3]
Future Policy Benefits, Losses, Claims and Loss Expenses	1,472,132		1,498,176	[3]	1,476,281	[3]
Unearned Premiums	77	[3]	89	[3]	123	[3]
Earned Premium Revenue	60,654		65,583	[3]	53,012	[3]
Investment Income, Net	66,467		70,026	[3]	73,981	[3]
Benefits, Claims, Losses and Settlement Expenses	59,085	[3]	63,664	[3]	55,125	[3]
Amortization of Deferred Policy Acquisition Costs	6,502		7,390	[1],[3]	9,224	[1],[3]
Other Underwriting Expense	16,235		17,505	[3]	12,353	[3]
Interest on Policyholders' Accounts	35,163		41,409	[3]	42,834	[3]
Premiums Written	$ 0	[2],[3]	$ 0	[2],[3]	$ 0	[2],[3]

[1] 2012 and 2011 include amortization of the value of business acquired asset that was recorded as a result of our acquisition of Mercer Insurance Group, Inc. totaling $1,673 and $25,763, respectively.

[2] Pursuant to Regulation S-X, premiums written does not apply to life insurance companies.

[3] Annuity deposits are included in future policy benefits, losses, claims and loss expenses.