Benefit Plans (Details Textual) (USD $)	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Executive Retirement Plan [Member] Age officer	Dec. 31, 2008 Executive Retirement Plan [Member] officer	Dec. 31, 2010 Retirement Plan for Outside Directors [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of employees may receive pension benefits		3
Minimum age to receive pension benefits		65 years
Minimum years of service to receive pension benefits		5 years
Defined benefit plans, general information		equal to 60% of the officer’s final average earnings (defined as the average of the executive’s highest three years’ earnings) plus 6% of final average earnings multiplied by the years of service after age 60 (but not more than five years), less 100% of certain other retirement benefits
Percentage of average earnings of officer as pension benefits amount		60.00%
Years of highest earnings to calculate the average earnings		3 years
Additional amount to be given as pension benefits is percentage of final average		6.00%
Minimum year of service used to calculate average earnings for final average earnings		60
Years of earning to calculate average final earnings maximum		5 years
Percentage of certain other benefits to be deducted from final amount of pension		100.00%
Maximum annual benefits payable under the Executive Retirement Plan, frozen subject to cost-of-living adjustments			$ 896,000
Number of officers eligible for pension benefits excluding chief executive officer			2
Number of officers which elected to receive benefits monthly upon retirement			1
Number of officers which elected to receive benefits in one lump sum upon retirement			1
Annual Installment to be Paid to CEO as pension benefits upon retirement		900,000
Amount paid against settlement of outside director plan				2,600,000
Amount included in accumulated other comprehensive loss will be amortized to expense in 2012	$ 200,000