LEASES - Leasing Activities - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014 Property Portfolios	Dec. 31, 2013	Jun. 30, 2013
Leases [Line Items]
Number of new triple net leases we've entered into	13
Number of leased properties with new tenants	467
Properties under license agreements	40
Maximum lease commitment for capital expenditure	$ 15,263,000
Amount of asset retirement obligations removed from the balance sheet	12,997,000
Deferred rental revenue	2,382,000
Lease origination costs	60,000		365,000
Investment of capital commitment	433,000	308,000
Minimum [Member]
Leases [Line Items]
Unitary triple-net lease agreements initial terms	15 years
Maximum [Member]
Leases [Line Items]
Unitary triple-net lease agreements successive terms	20 years
USTs [Member]
Leases [Line Items]
Net asset costs related to USTs removed from the balance Sheet	$ 10,615,000