Employee Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Pension Plan, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss (gain)	$ 625,226	$ 849,356
Prior service cost
Amount recognized	625,226	849,356
Other Postretirement Benefit Plan, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss (gain)	(47,038)	147,611
Prior service cost
Net obligation at transition		2,913
Amount recognized	$ (47,038)	$ 150,524