Operating Segments - Summary of Financial Information for Operating Segments (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Total operating revenue	$ 65,042,180	$ 43,614,728
Total cost of sales	46,196,400	26,976,456
GROSS MARGIN	18,845,780	16,638,272
OPERATING EXPENSE	10,057,569	8,027,197
OPERATING INCOME (LOSS)	8,788,211	8,611,075
DISCONTINUED OPERATIONS	(15,561)	18,113
NET INCOME (LOSS)	5,018,491	4,787,723
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenue	68,369,141	45,716,907
Total cost of sales	49,523,361	29,078,635
OPERATING EXPENSE	10,082,814
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total operating revenue	(3,326,961)	(2,102,179)
Total cost of sales	(3,326,961)	(2,102,179)
OPERATING EXPENSE	(25,245)
Natural Gas Operations [Member]
Segment Reporting Information [Line Items]
Total operating revenue	60,253,810	39,944,662
Total cost of sales	41,955,435	24,116,421
GROSS MARGIN	18,298,375	15,828,241
OPERATING EXPENSE	8,602,160	7,576,871
OPERATING INCOME (LOSS)	9,696,215	8,251,370
DISCONTINUED OPERATIONS
NET INCOME (LOSS)	5,693,246	4,711,206
Natural Gas Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenue	60,340,354	40,030,408
Total cost of sales	42,041,979	24,202,167
OPERATING EXPENSE	8,602,160
Natural Gas Operations [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total operating revenue	(86,544)	(85,746)
Total cost of sales	(86,544)	(85,746)
OPERATING EXPENSE
Marketing and Production [Member]
Segment Reporting Information [Line Items]
Total operating revenue	4,689,356	3,571,779
Total cost of sales	4,240,965	2,860,035
GROSS MARGIN	448,391	711,744
OPERATING EXPENSE	382,458	261,251
OPERATING INCOME (LOSS)	65,933	450,493
DISCONTINUED OPERATIONS
NET INCOME (LOSS)	20,801	248,461
Marketing and Production [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenue	7,929,773	5,588,212
Total cost of sales	7,481,382	4,876,468
OPERATING EXPENSE	382,458
Marketing and Production [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total operating revenue	(3,240,417)	(2,016,433)
Total cost of sales	(3,240,417)	(2,016,433)
OPERATING EXPENSE
Pipeline Operations [Member]
Segment Reporting Information [Line Items]
Total operating revenue	99,014	98,287
Total cost of sales
GROSS MARGIN	99,014	98,287
OPERATING EXPENSE	22,012	47,678
OPERATING INCOME (LOSS)	77,002	50,609
DISCONTINUED OPERATIONS
NET INCOME (LOSS)	44,948	27,114
Pipeline Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenue	99,014	98,287
Total cost of sales
OPERATING EXPENSE	22,012
Pipeline Operations [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total operating revenue
Total cost of sales
OPERATING EXPENSE
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total operating revenue
Total cost of sales
GROSS MARGIN
OPERATING EXPENSE	1,050,939	141,397
OPERATING INCOME (LOSS)	(1,050,939)	(141,397)
DISCONTINUED OPERATIONS	(15,561)	18,113
NET INCOME (LOSS)	(740,504)	(199,058)
Corporate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total operating revenue
Total cost of sales
OPERATING EXPENSE	1,076,184
Corporate and Other [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total operating revenue
Total cost of sales
OPERATING EXPENSE	$ (25,245)