Real Estate Held for Investment (Detail) - Real Estate Held for Investment (USD $)	Dec. 31, 2012	Dec. 31, 2011
Land	$ 4,403,667
Buildings and Equipment	12,273,366
Total	16,677,033
Accumulated Depreciation	2,930,639	2,448,341
KinderCare Andover MN
Land	179,755
Buildings and Equipment	1,084,452
Total	1,264,207
Accumulated Depreciation	457,276
Jared Jewelry Hanover MD
Land	861,065
Buildings and Equipment	1,128,070
Total	1,989,135
Accumulated Depreciation	400,466
Jared Jewelry Auburn Hills MI
Land	280,993
Buildings and Equipment	1,185,055
Total	1,466,048
Accumulated Depreciation	377,241
CarMax Lithia Springs GA
Land	815,180
Buildings and Equipment	1,070,051
Total	1,885,231
Accumulated Depreciation	333,499
Applebees Johnstown PA
Land	431,754
Buildings and Equipment	1,251,133
Total	1,682,887
Accumulated Depreciation	314,867
Best Buy Eau Claire WI
Land	853,357
Buildings and Equipment	2,784,349
Total	3,637,706
Accumulated Depreciation	547,589
Fresenius Medical Center Shreveport LA
Land	102,046
Buildings and Equipment	1,258,571
Total	1,360,617
Accumulated Depreciation	213,958
Tractor Supply Rapid City SD
Land	588,967
Buildings and Equipment	1,368,767
Total	1,957,734
Accumulated Depreciation	184,785
Scott White College Station TX
Land	290,550
Buildings and Equipment	1,142,918
Total	1,433,468
Accumulated Depreciation	$ 100,958