Stock-Based Compensation (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years 7 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights	The Corporation maintains two stock-based compensation plans from which new grants could be issued. The Corporation’s stock-based compensation plans permit Parent Corporation common stock to be issued to key employees and directors of the Corporation and its subsidiaries. The options granted under the plans are intended to be either incentive stock options or non-qualified options. Under the 2009 Equity Incentive Plan, a total of 363,081 shares are available for grant and issuance as of September 30, 2013. Under the 2003 Non-Employee Director Stock Option Plan, a total of 380,644 shares remain available for grant and issuance under the plan as of September 30, 2013. Such shares may be treasury shares, newly issued shares or a combination thereof. Options have been granted to purchase common stock principally at the fair market value of the stock at the date of grant. Options are exercisable over a three year vesting period starting one year after the date of grant and generally expire ten years from the date of grant. Stock-based compensation expense for share-based payment awards is based on the grant date fair value estimated on the date of grant. The Corporation recognizes compensation costs for those shares expected to vest on a straight-line basis over the requisite service period of the award, which is generally the option vesting term of three years. The Corporation estimates the forfeiture rate based on its historical experience during the preceding seven fiscal years.
Compensation expense related to stock options	$ 54,000	$ 27,000
Compensation expense related to stock options, Net of tax	32,000	16,000
Common Stock Underlying Grant Options	41,639	27,784
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	161,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross	18,829	0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	5 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 231,000
Employee Director Stock Option Plan 2003 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	380,644
2009 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	363,081