Condensed Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Statements Of Comprehensive Income [Abstract]
NET INCOME	$ 3,943,478	$ 3,404,003	$ 11,757,716	$ 11,112,560
Defined benefit pension plan:
Amortization of prior service cost included in net periodic pension cost	4,366	4,367	13,100	13,102
Amortization of net loss included in net periodic pension cost		165,884		497,652
Total other comprehensive income	4,366	170,251	13,100	510,754
TOTAL COMPREHENSIVE INCOME	$ 3,947,844	$ 3,574,254	$ 11,770,816	$ 11,623,314