Fair Value of Financial Instruments (Level 3 Securities) (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 19,988
Unrealized losses	(67)	[1]
Purchases	144
Disposals	(441)
Ending Balance	19,624
States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	698
Unrealized losses	0	[1]
Purchases	0
Disposals	0
Ending Balance	698
Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	13,480
Unrealized losses	(62)	[1]
Purchases	0
Disposals	(296)
Ending Balance	13,122
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,029
Unrealized losses	(5)	[1]
Purchases	0
Disposals	(111)
Ending Balance	1,913
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3,781
Unrealized losses	0	[1]
Purchases	144
Disposals	(34)
Ending Balance	$ 3,891

[1] nrealized gains (losses) are recorded as a component of comprehensive income.