PRO FORMA FINANCIAL INFORMATION (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 01, 2011	Sep. 30, 2012 Series of Individually Immaterial Business Acquisitions [Member]	Sep. 30, 2011 Series of Individually Immaterial Business Acquisitions [Member]	Sep. 30, 2012 Series of Individually Immaterial Business Acquisitions [Member] Facilities	Sep. 30, 2011 Series of Individually Immaterial Business Acquisitions [Member]	Dec. 31, 2011 Series of Individually Immaterial Business Acquisitions [Member] Facilities
Business Acquisition [Line Items]
Business Acquisition, Number of Acquired Properties				8		11
Business Acquisition, Number of Loans and Leases Receivable				3
Stock issuance, Shares	11,700,000
Business Acquisition, Pro Forma Information [Abstract]
Revenues		$ 26,910	$ 26,547	$ 80,604	$ 79,503
Depreciation and amortization		7,756	8,062	23,607	24,458
Net income		$ 5,530	$ 6,764	$ 16,604	$ 18,802
Net income per common share, basic (USD per share)		$ 0.15	$ 0.18	$ 0.45	$ 0.51
Net income per common share, diluted (USD per share)		$ 0.15	$ 0.18	$ 0.45	$ 0.51
Weighted-average number of common shares outstanding, basic (in shares)		37,178,162	36,939,157	37,121,384	36,906,422
Weighted-average number of common shares outstanding, diluted (in shares)		37,465,114	37,002,121	37,276,013	37,000,701