Fair Value (Reconciliation of all Assets Measured at Fair Value on a Recurring Basis, Using Significant Unobservable Inputs (Level 3)) (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Obligations of State and Political Subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	$ 10,832	$ 12,169
Total Gains or Losses (realized/unrealized) Included in earnings	164	(332)
Maturities / Calls	(855)	(1,005)
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	10,141	10,832
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	353	353
Total Gains or Losses (realized/unrealized) Included in earnings	0	0
Maturities / Calls	0	0
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	353	353
Corporate Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	0	0
Total Gains or Losses (realized/unrealized) Included in earnings	0	0
Maturities / Calls	0	0
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	$ 0	$ 0