LEASES - Summary of Selected Financial Data (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 24,244	$ 23,384	$ 47,883	$ 45,465
Net income (loss)	6,637	12,739	16,275	23,089
CPD NY and NECG [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenue	147,229	147,046	274,396	266,991
Gross profit	10,923	10,947	20,183	19,787
Net income (loss)	688	1,621	699	1,459
Current assets	12,870		12,870		10,944
Noncurrent assets	30,461		30,461		28,852
Current liabilities	16,821		16,821		13,985
Noncurrent liabilities	16,043		16,043		16,043
White Oak Petroleum, LLC, Hudson Petroleum Realty, LLC, Dogwood Petroleum Realty, LLC and Big Apple Petroleum Realty, LLC [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenue	92,854	87,558	177,103	177,745
Gross profit	2,179	4,317	3,412	7,386
Net income (loss)	(1,053)	(1,026)	(3,048)	(580)
Current assets	6,640		6,640		10,128
Noncurrent assets	110,850		110,850		111,540
Current liabilities	9,863		9,863		10,880
Noncurrent liabilities	$ 135,399		$ 135,399		$ 135,210