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Retirement Agreements and Other Postretirement 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, 2015 | Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract] |  |
One-Percent Point Increase: Effect on the service cost component | $ 2,600 |
One-Percent Point Increase: Effect on interest cost | 7,339 |
One-Percent Point Increase: Total effect on the net periodic postretirement benefit cost | 9,939 |
One-Percent Point Decrease: Effect on the service cost component |  | $ (1,989)
One-Percent Point Decrease: Effect on interest cost |  | (5,721)
One-Percent Point Decrease: Total effect on the net periodic postretirement benefit cost |  | (7,710)
One-Percent Point Increase: Effect on those currently receiving benefits (retirees and spouses) | 0 |
One-Percent Point Increase: Effect on active fully eligible | 81,657 |
One-Percent Point Increase: Effect on actives not yet eligible | 101,813 |
One-Percent Point Increase: Total effect on the accumulated postretirement benefit obligation | $ 183,470 |
One-Percent Point Decrease: Effect on those currently receiving benefits (retirees and spouses) |  | 0
One-Percent Point Decrease: Effect on active fully eligible |  | (65,192)
One-Percent Point Decrease: Effect on actives not yet eligible |  | (77,845)
One-Percent Point Decrease: Total effect on the accumulated postretirement benefit obligation |  | $ (143,037)

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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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