Other Benefit Plans (Schedule of Net Periodic Benefit Costs) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Cash Surrender Value of Bank Owned Life Insurance	$ 3,513,000	$ 3,408,000
Defined Contribution Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Associated Expense	0	0	0
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Recorded Liability	192,000	181,000
Deferred Compensation Arrangement With Individual, Deferred Receipt of Fees, Recorded Liability	423,000	501,000
Salary Continuation Agreement [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Associated Expense	13,000	12,000	11,000
Deferred Compensation Arrangement with Individual, Recorded Liability	192,000	179,000
Defined Benefit Plan, Maximum Coverage Period	15 years
Cash Surrender Value of Bank Owned Life Insurance	1,143,000	1,107,000
Employee Stock Ownership Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Stock Ownership Plan (ESOP), Compensation Expense	0	0	0
Employee Stock Ownership Plan (ESOP), Shares in ESOP	38,799	41,873
Employee Stock Ownership Plan (ESOP), Shares In ESOP, Fair Value Per Share	$ 11.19
Employee Stock Ownership Plan (ESOP), Shares In ESOP, Fair Value	434,000
Split Dollar Life Insurance Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash Surrender Value of Bank Owned Life Insurance	1,694,000	1,661,000
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Associated Expense	$ 111,000	$ 115,000	$ 90,000