Fair Value of Financial Instruments (Level 3 Securities) (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013		Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 24,654		$ 23,540
Realized gains	18	[1]	53	[2]
Unrealized losses	(553)	[1]	1,670	[2]
Purchases	105		278
Disposals	(470)		(1,787)
Ending Balance	23,754		23,754
States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	788		750
Realized gains	0	[1]	0	[2]
Unrealized losses	0	[1]	103	[2]
Purchases	0		0
Disposals	0		(65)
Ending Balance	788		788
Foreign Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0		558
Realized gains	0	[1]	35	[2]
Unrealized losses	0	[1]	13	[2]
Purchases	0		0
Disposals	0		(606)
Ending Balance	0		0
Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	17,746		16,108
Realized gains	0	[1]	0	[2]
Unrealized losses	(533)	[1]	1,554	[2]
Purchases	105		105
Disposals	(367)		(816)
Ending Balance	16,951		16,951
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,311		2,488
Realized gains	18	[1]	18	[2]
Unrealized losses	(20)	[1]	0	[2]
Purchases	0		0
Disposals	(103)		(300)
Ending Balance	2,206		2,206
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3,809		3,636
Realized gains	0	[1]	0	[2]
Unrealized losses	0	[1]	0	[2]
Purchases	0		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.