LEASES - Chestnut Petroleum Dist. Inc. - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	6 Months Ended
	Jun. 30, 2013 Operator	Jun. 30, 2014 Property	Jun. 30, 2013	Dec. 31, 2013
Leases [Line Items]
Lease revenue percentage		17.00%	13.00%
Number of locations (operators) involved in the proceedings	24
Number of former operators have withdrawn their appeals	14
Number of operators remain in the site during their court appeal	10
Number of properties recapture and sever from NECG		29
Bad debt reserve		$ 840	$ (6,895)
Bad debt reserve, total		3,900		3,248
Reserved deferred rent receivable		6,359
CPD NY and NECG [Member]
Leases [Line Items]
Number of leased properties		141
Number of unitary leases		2
Lease revenue percentage		20.00%	22.00%
CPD NY [Member]
Leases [Line Items]
Number of leased properties		58
NECG Holdings Corp [Member]
Leases [Line Items]
Number of leased properties		83
Bad debt reserve		320
Bad debt reserve, total		2,085
Non-cash allowances for deferred rental receivable		$ 1,584