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Retirement Agreements And Other Postretirment Benefit Plan (Effects On Net Periodic Postretirement Benefit Cost And Accumulated Postretirement Benefit Obligation) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2012
Retirement Agreements And Other Postretirement Benefit Plan [Abstract] |
One-Percentage Point Increase: Effect on the service cost component | $ 4,369
One-Percentage Point Increase: Effect on interest cost | 6,591
One-Percentage Point Increase: Total effect on the net periodic postretirement benefit cost | 10,960
One-Percentage Point Decrease: Effect on the service cost component | (3,265)
One-Percentage Point Decrease: Effect on interest cost | (5,010)
One-Percentage Point Decrease: Total effect on the net periodic postretirement benefit cost | (8,275)
One-Percentage Point Increase: Effect on those currently receiving benefits (retirees and spouses) | 0
One-Percentage Point Increase: Effect on active fully eligible | 78,530
One-Percentage Point Increase: Effect on actives not yet eligible | 86,245
One-Percentage Point Increase: Total effect on the accumulated postretirement benefit obligation | 164,775
One-Percentage Point Decrease: Effect on those currently receiving benefits (retirees and spouses) | 0
One-Percentage Point Decrease: Effect on active fully eligible | (60,962)
One-Percentage Point Decrease: Effect on actives not yet eligible | (64,280)
One-Percentage Point Decrease: Total effect on the accumulated postretirement benefit obligation | $ (125,242)

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