Schedule III - Real Estate and Accumulated Depreciation (Detail) (USD $)					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Rialto, CA [Member]	Dec. 31, 2013 Moreno Valley, CA [Member]	Dec. 31, 2013 La Verne, CA [Member]	Dec. 31, 2013 Rancho Cucamonga, CA [Member] Restaurant I [Member]	Dec. 31, 2013 Rancho Cucamonga, CA [Member] Restaurant II [Member]	Dec. 31, 2013 Sacramento, CA [Member]	Dec. 31, 2013 Land & land improvements [Member] Rialto, CA [Member]	Dec. 31, 2013 Land & land improvements [Member] Moreno Valley, CA [Member]	Dec. 31, 2013 Land & land improvements [Member] La Verne, CA [Member]	Dec. 31, 2013 Land & land improvements [Member] Rancho Cucamonga, CA [Member] Restaurant I [Member]	Dec. 31, 2013 Land & land improvements [Member] Rancho Cucamonga, CA [Member] Restaurant II [Member]	Dec. 31, 2013 Land & land improvements [Member] Sacramento, CA [Member]	Dec. 31, 2013 Buildings and improvements [Member] Rialto, CA [Member]	Dec. 31, 2013 Buildings and improvements [Member] Moreno Valley, CA [Member]	Dec. 31, 2013 Buildings and improvements [Member] La Verne, CA [Member]	Dec. 31, 2013 Buildings and improvements [Member] Rancho Cucamonga, CA [Member] Restaurant I [Member]	Dec. 31, 2013 Buildings and improvements [Member] Rancho Cucamonga, CA [Member] Restaurant II [Member]	Dec. 31, 2013 Buildings and improvements [Member] Sacramento, CA [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances
Initial cost to company, Land & land improvements	1,852,482				274,837	353,557	452,423	293,817	217,332	260,516
Initial cost to company, Building & Improvements	1,013,134				150,310	193,362	247,433	160,690	118,861	142,478
Cost capitalized subsequent to acquisition, Carrying costs	77,203							77,203
Gross amount at which carried at close of period Land, buildings & improvements Total	2,942,819	2,942,819	2,942,819	2,942,819	425,147	546,919	699,856	531,710	336,193	402,994
Accumulated depreciation	$ 1,114,697	$ 1,085,749	$ 1,056,801	$ 1,027,853	$ 165,380	$ 212,746	$ 272,236	$ 176,792	$ 130,780	$ 156,763
Date of construction					1984	1985	1985	1985	1985	1985
Date acquired					1984	1985	1985	1985	1985	1985
Life on which depreciation in latest income statement is computed											20 years	20 years	20 years	20 years	20 years	20 years	35 years	35 years	35 years	35 years	35 years	35 years