Fair Value of Financial Instruments (Level 3 Securities) (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013		Jun. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 25,658		$ 23,540
Realized gains	35	[1]	35	[2]
Unrealized losses	(260)	[1]	2,223	[2]
Purchases	173		173
Disposals	(952)		(1,317)
Ending Balance	24,654		24,654
States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	875		750
Realized gains	0	[1]	0	[2]
Unrealized losses	(22)	[1]	103	[2]
Purchases	0		0
Disposals	(65)		(65)
Ending Balance	788		788
Foreign Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	621		558
Realized gains	35	[1]	35	[2]
Unrealized losses	(50)	[1]	13	[2]
Purchases	0		0
Disposals	(606)		(606)
Ending Balance	0		0
Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	18,085		16,108
Realized gains	0	[1]	0	[2]
Unrealized losses	(162)	[1]	2,087	[2]
Purchases	0		0
Disposals	(177)		(449)
Ending Balance	17,746		17,746
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,441		2,488
Realized gains	0	[1]	0	[2]
Unrealized losses	(26)	[1]	20	[2]
Purchases	0		0
Disposals	(104)		(197)
Ending Balance	2,311		2,311
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3,636		3,636
Realized gains	0	[1]	0	[2]
Unrealized losses	0	[1]	0	[2]
Purchases	173		173
Disposals	0		0
Ending Balance	$ 3,809		$ 3,809

[1] Realized gains are recorded as a component of earnings whereas unrealized losses are recorded as a component of comprehensive income.

[2] Realized gains are recorded as a component of earnings, whereas unrealized gains are recorded as a component of comprehensive income.