Fair Value of Financial Instruments (Level 3 Securities) (Details) - Recurring [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015		Sep. 30, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 17,663		$ 18,315
Net unrealized gains (losses)	(70)	[1]	25	[2]
Purchases	100		221
Disposals	(543)		(1,411)
Ending Balance	17,150		17,150
States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	430		519
Net unrealized gains (losses)	0	[1]	(14)	[2]
Purchases	0		0
Disposals	0		(75)
Ending Balance	430		430
Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	11,944		12,312
Net unrealized gains (losses)	(87)	[1]	62	[2]
Purchases	100		100
Disposals	(407)		(924)
Ending Balance	11,550		11,550
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,311		1,612
Net unrealized gains (losses)	17	[1]	(23)	[2]
Purchases	0		0
Disposals	(136)		(397)
Ending Balance	1,192		1,192
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3,978		3,872
Net unrealized gains (losses)	0	[1]	0	[2]
Purchases	0		121
Disposals	0		(15)
Ending Balance	$ 3,978		$ 3,978

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

[2] Unrealized gains (losses) are recorded as a component of comprehensive income.