Employee Benefit Plans (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Components of Net Periodic Benefit Cost
Service cost		$ 63,571
Interest cost	35,815	44,575
Expected return on plan assets	(53,665)	(80,466)
Amortization of unrecognized prior service cost		(13,491)
Amortization of unrecognized net loss	22,436	17,860
Amortization of transition obligation
Net periodic benefit cost	4,586	32,049
Post-Retirement Benefits [Member]
Components of Net Periodic Benefit Cost
Service cost	5,738	6,501
Interest cost	7,477	7,489
Expected return on plan assets
Amortization of unrecognized prior service cost
Amortization of unrecognized net loss	1,124	735
Amortization of transition obligation	728	728
Net periodic benefit cost	$ 15,066	$ 15,453