E. COMMODITY DERIVATIVE INSTRUMENTS (Details 3) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Balance, beginning of period, before tax	$ 63,091	$ 63,041
Balance, beginning of period, after tax	38,801	$ 38,770
Sale of unexpired contracts previously subject to hedge accounting rules before tax	(119,917)
Sale of unexpired contracts previously subject to hedge accounting rules after tax	(73,749)
Other reclassifications due to expired contracts previously subject to hedge accounting rules, before tax	41,525	$ 50
Other reclassifications due to expired contracts previously subject to hedge accounting rules, after tax	25,538	31
Balance, end of period, before tax	(15,301)	63,091
Balance, end of period, after tax	$ (9,410)	$ 38,801