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Pension Plan - Schedule of Unrecognized (Gain) or Loss (Detail) (USD $)
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12 Months Ended |
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Dec. 31, 2013
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| Compensation And Retirement Disclosure [Abstract] | |
| Liability loss determined from the January 1, 2013 census and included in this year's net periodic cost | $ 129,024 |
| Asset gain occurring over the measurement period | (736,025) |
| Gain due to assumption changes effective as of December 31, 2013 | (933,104) |
| Total unrecognized gain | $ (1,540,105) |