Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current [Abstract]
Federal	$ (4,126,000)	$ 751,000	$ 5,043,000
State	280,000	345,000	848,000
Total Current Tax	(3,846,000)	1,096,000	5,891,000
Deferred [Abstract]
Federal	1,412,000	(4,339,000)	(5,691,000)
State	1,162,000	(980,000)	(1,505,000)
Total Deferred Tax	2,574,000	(5,319,000)	(7,196,000)
Valuation Allowance	558,000	0	0
Total	(714,000)	(4,223,000)	(1,305,000)
Effective income tax rate reconciliation [Abstract]
Federal income tax (benefit) expense at statutory rates (in hundredths)	(34.00%)	(35.00%)	35.00%
Tax-exempt interest (in hundredths)	(82.00%)	(56.00%)	(55.00%)
State income taxes net of federal benefit (in hundredths)	26.00%	(10.00%)	(8.00%)
Decrease in deferred tax assets related to tax rates (in hundredths)	62.00%	0.00%	0.00%
Other (in hundredths)	(1.00%)	3.00%	2.00%
Total (in hundredths)	(29.00%)	(98.00%)	(26.00%)
Deferred tax assets [Abstract]
Allowance for possible loan losses	6,458,000	15,835,000	11,520,000
Post-retirement benefits	571,000	551,000	519,000
Deferred compensation	1,642,000	1,941,000	2,001,000
Unfunded pension obligation	2,826,000	7,396,000	2,299,000
Alternative Minimum Tax credit carryforward	537,000	0	0
Net operating loss carryforward	5,277,000	0	0
Other	1,758,000	2,003,000	1,839,000
Total deferred tax assets before valuation allowance	19,069,000	27,726,000	18,178,000
Valuation Allowance	558,000	0	0
Total deferred tax assets net of valuation allowance	18,511,000	27,726,000	18,178,000
Deferred tax liabilities [Abstract]
Securities available for sale	(6,019,000)	(7,692,000)	(4,975,000)
Other	(1,107,000)	(1,569,000)	(1,076,000)
Total deferred tax liabilities	(7,126,000)	(9,261,000)	(6,051,000)
Net deferred tax asset	11,385,000	18,465,000	12,127,000
Income tax receivable	5,406,000	5,421,000
Changes in unrecognized tax benefits [Roll Forward]
Balance January 1	38,000	41,000	50,000
Additions from current year tax positions	1,000	0	0
Reductions for prior year tax positions	(5,000)	(3,000)	(9,000)
Balance December 31	34,000	38,000	41,000
Federal [Member]
Changes in unrecognized tax benefits [Roll Forward]
Net operating loss carryforwards	13,900,000
State [Member]
Changes in unrecognized tax benefits [Roll Forward]
Net operating loss carryforwards	$ 24,100,000