Condensed Statements Of Comprehensive Income (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Statements Of Comprehensive Income [Abstract]
NET INCOME	$ 3,571,758	$ 3,690,846
Defined benefit pension plan:
Amortization of prior service cost included in net periodic pension cost	4,367	4,367
Amortization of net loss included in net periodic pension cost		165,884
Total other comprehensive income	4,367	170,251
TOTAL COMPREHENSIVE INCOME	$ 3,576,125	$ 3,861,097