Schedule III - Real Estate and Accumulated Depreciation (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cost:
Balance at End of Year	$ 170,194,285
Encumbrances	30,400,000
Accumulated Depreciation:
Balance at End of Year	11,986,949
Land	78,949,844
Building & Improvements	77,173,890
Improvements	13,453,036
Carrying Costs	617,515
Land	93,020,395
Buildings	77,173,890
Total	170,194,285
Depreciation	11,986,949
Real Estate [Member]
Cost:
Balance at Beginning of Year	151,226,811	134,561,058	134,705,516
Additions and Improvements	36,607,950	24,552,841	3,050,496
Adjust to Fair Value			(68,454)
Cost of Real Estate Sold	(17,640,476)	(7,887,088)	(3,126,500)
Balance at End of Year	170,194,285	151,226,811	134,561,058
Accumulated Depreciation:
Balance at Beginning of Year	11,135,501	10,089,354	9,136,562
Depreciation and Amortization	2,066,386	1,539,990	1,470,947
Depreciation on Real Estate Sold	(1,214,938)	(493,843)	(518,155)
Balance at End of Year	11,986,949	11,135,501	10,089,354
Total	170,194,285	151,226,811	134,561,058
Depreciation	11,986,949	11,135,501	10,089,354
Bank of America, Garden Grove, CA [Member]
Cost:
Balance at End of Year	3,199,978
Encumbrances	1,840,985
Accumulated Depreciation:
Balance at End of Year	39,394
Land	1,745,447
Building & Improvements	1,454,531
Improvements
Carrying Costs
Land	1,745,447
Buildings	1,454,531
Total	3,199,978
Depreciation	39,394
Acquired	Dec. 13, 2012
Life	40 years
Bank of America, La Habra, CA [Member]
Cost:
Balance at End of Year	2,149,906
Encumbrances	1,236,866
Accumulated Depreciation:
Balance at End of Year	39,404
Land	571,573
Building & Improvements	1,578,333
Improvements
Carrying Costs
Land	571,573
Buildings	1,578,333
Total	2,149,906
Depreciation	39,404
Acquired	Dec. 13, 2012
Life	40 years
Bank of America Laguna CA [Member]
Cost:
Encumbrances	1,657,646
Accumulated Depreciation:
Land	1,231,328
Building & Improvements	1,649,972
Improvements
Carrying Costs
Bank of America, Los Alamitos, CA [Member]
Cost:
Balance at End of Year	1,603,992
Encumbrances	922,796
Accumulated Depreciation:
Balance at End of Year	20,800
Land	771,976
Building & Improvements	832,016
Improvements
Carrying Costs
Land	771,976
Buildings	832,016
Total	1,603,992
Depreciation	20,800
Acquired	Dec. 13, 2012
Life	40 years
Bank of America Puerta Real Mission Viejo CA [Member]
Cost:
Encumbrances	734,920
Accumulated Depreciation:
Land	523,539
Building & Improvements	753,890
Improvements
Carrying Costs
Bank of America Trabuca Mission Viejo CA [Member]
Cost:
Encumbrances	1,115,623
Accumulated Depreciation:
Land	544,713
Building & Improvements	1,394,450
Improvements
Carrying Costs
Bank of America, Walnut, CA [Member]
Cost:
Balance at End of Year	2,257,160
Encumbrances	1,298,571
Accumulated Depreciation:
Balance at End of Year	30,353
Land	1,043,050
Building & Improvements	1,214,110
Improvements
Carrying Costs
Land	1,043,050
Buildings	1,214,110
Total	2,257,160
Depreciation	30,353
Acquired	Jan. 03, 2013
Life	40 years
Bank of America, Westminster, CA [Member]
Cost:
Balance at End of Year	3,032,382
Encumbrances	1,744,565
Accumulated Depreciation:
Balance at End of Year	29,290
Land	1,950,902
Building & Improvements	1,081,480
Improvements
Carrying Costs
Land	1,950,902
Buildings	1,081,480
Total	3,032,382
Depreciation	29,290
Acquired	Jan. 03, 2013
Life	40 years
Bank of America, Yorba Linda, CA [Member]
Cost:
Balance at End of Year	1,743,707
Encumbrances	1,003,175
Accumulated Depreciation:
Balance at End of Year	12,505
Land	1,245,514
Building & Improvements	498,193
Improvements
Carrying Costs
Land	1,245,514
Buildings	498,193
Total	1,743,707
Depreciation	12,505
Acquired	Jan. 03, 2013
Life	40 years
Barnes & Noble, Daytona Beach, FL [Member]
Cost:
Balance at End of Year	5,601,600
Encumbrances
Accumulated Depreciation:
Balance at End of Year	1,235,975
Land	1,798,600
Building & Improvements	3,803,000
Improvements
Carrying Costs
Land	1,798,600
Buildings	3,803,000
Total	5,601,600
Depreciation	1,235,975
Acquired	Dec. 15, 2005
Life	40 years
Best Buy, McDonough, GA [Member]
Cost:
Balance at End of Year	5,772,682
Encumbrances
Accumulated Depreciation:
Balance at End of Year	587,348
Land	2,622,682
Building & Improvements	3,150,000
Improvements
Carrying Costs
Land	2,622,682
Buildings	3,150,000
Total	5,772,682
Depreciation	587,348
Acquired	Jun. 15, 2006
Life	40 years
Big Lots, Germantown, MD [Member]
Cost:
Balance at End of Year	4,733,149
Encumbrances
Accumulated Depreciation:
Balance at End of Year	24,594
Land	1,781,918
Building & Improvements	2,951,231
Improvements
Carrying Costs
Land	1,781,918
Buildings	2,951,231
Total	4,733,149
Depreciation	24,594
Acquired	Sep. 13, 2013
Life	40 years
Big Lots, Phoenix, AZ [Member]
Cost:
Balance at End of Year	4,765,881
Encumbrances
Accumulated Depreciation:
Balance at End of Year	69,900
Land	1,715,717
Building & Improvements	3,050,164
Improvements
Carrying Costs
Land	1,715,717
Buildings	3,050,164
Total	4,765,881
Depreciation	69,900
Acquired	Jan. 23, 2013
Life	40 years
Buffalo Wild Wings, Phoenix, AZ [Member]
Cost:
Balance at End of Year	1,716,834
Encumbrances	987,715
Accumulated Depreciation:
Balance at End of Year
Land	1,716,834
Building & Improvements
Improvements
Carrying Costs
Land	1,716,834
Buildings
Total	1,716,834
Depreciation
Acquired	Sep. 30, 2012
CVS, Clermont, FL [Member]
Cost:
Balance at End of Year	2,946,808
Encumbrances
Accumulated Depreciation:
Balance at End of Year	404,300
Land	1,493,985
Building & Improvements	1,452,823
Improvements
Carrying Costs
Land	1,493,985
Buildings	1,452,823
Total	2,946,808
Depreciation	404,300
Acquired	Nov. 22, 2002
Life	40 years
CVS, Melbourne, FL [Member]
Cost:
Balance at End of Year	2,486,974
Encumbrances
Accumulated Depreciation:
Balance at End of Year	248,946
Land	1,567,788
Building & Improvements	919,186
Improvements
Carrying Costs
Land	1,567,788
Buildings	919,186
Total	2,486,974
Depreciation	248,946
Acquired	Mar. 05, 2003
Life	40 years
CVS, Sanford, FL [Member]
Cost:
Balance at End of Year	3,455,847
Encumbrances
Accumulated Depreciation:
Balance at End of Year	575,079
Land	1,565,176
Building & Improvements	1,890,671
Improvements
Carrying Costs
Land	1,565,176
Buildings	1,890,671
Total	3,455,847
Depreciation	575,079
Acquired	Nov. 15, 2001
Life	40 years
CVS, Sanford, FL [Member]
Cost:
Balance at End of Year	3,621,319
Encumbrances
Accumulated Depreciation:
Balance at End of Year	320,270
Land	2,345,694
Building & Improvements	1,275,625
Improvements
Carrying Costs
Land	2,345,694
Buildings	1,275,625
Total	3,621,319
Depreciation	320,270
Acquired	Sep. 17, 2003
Life	40 years
CVS, Sebastian, FL [Member]
Cost:
Balance at End of Year	3,494,704
Encumbrances
Accumulated Depreciation:
Balance at End of Year	312,292
Land	2,205,709
Building & Improvements	1,288,995
Improvements
Carrying Costs
Land	2,205,709
Buildings	1,288,995
Total	3,494,704
Depreciation	312,292
Acquired	Apr. 23, 2004
Life	40 years
CVS, Sebring, FL [Member]
Cost:
Balance at End of Year	3,035,031
Encumbrances
Accumulated Depreciation:
Balance at End of Year	470,115
Land	1,312,472
Building & Improvements	1,722,559
Improvements
Carrying Costs
Land	1,312,472
Buildings	1,722,559
Total	3,035,031
Depreciation	470,115
Acquired	Feb. 04, 2003
Life	40 years
CVS, Tallahassee, FL [Member]
Cost:
Balance at End of Year	3,671,678
Encumbrances	2,112,360
Accumulated Depreciation:
Balance at End of Year	564,654
Land	590,800
Building & Improvements	1,595,000
Improvements	1,485,878
Carrying Costs
Land	2,076,678
Buildings	1,595,000
Total	3,671,678
Depreciation	564,654
Acquired	Dec. 13, 2000
Life	40 years
CVS, Vero Beach, FL [Member]
Cost:
Balance at End of Year	4,425,896
Encumbrances
Accumulated Depreciation:
Balance at End of Year	281,584
Land	3,113,661
Building & Improvements	1,312,235
Improvements
Carrying Costs
Land	3,113,661
Buildings	1,312,235
Total	4,425,896
Depreciation	281,584
Acquired	Jun. 02, 2005
Life	40 years
Dick's Sporting Goods, McDonough, GA [Member]
Cost:
Balance at End of Year	8,659,022
Encumbrances
Accumulated Depreciation:
Balance at End of Year	905,621
Land	3,934,022
Building & Improvements	4,725,000
Improvements
Carrying Costs
Land	3,934,022
Buildings	4,725,000
Total	8,659,022
Depreciation	905,621
Acquired	Jun. 15, 2006
Life	40 years
Harris Teeter Supermarket, Charlotte, NC [Member]
Cost:
Balance at End of Year	9,011,175
Encumbrances
Accumulated Depreciation:
Balance at End of Year	490,093
Land	5,601,837
Building & Improvements	3,409,338
Improvements
Carrying Costs
Land	5,601,837
Buildings	3,409,338
Total	9,011,175
Depreciation	490,093
Acquired	Apr. 17, 2008
Life	40 years
Hilton Resorts Corporation (Office), Orlando, FL One [Member]
Cost:
Balance at End of Year	9,401,623
Encumbrances	5,252,926
Accumulated Depreciation:
Balance at End of Year	58,108
Land	2,810,942
Building & Improvements	6,590,681
Improvements
Carrying Costs
Land	2,810,942
Buildings	6,590,681
Total	9,401,623
Depreciation	58,108
Acquired	Jan. 30, 2013
Life	40 years
Hilton Resorts Corporation (Office), Orlando, FL Two [Member]
Cost:
Balance at End of Year	3,663,828
Encumbrances	2,047,074
Accumulated Depreciation:
Balance at End of Year	149,118
Land	1,210,138
Building & Improvements	2,453,690
Improvements
Carrying Costs
Land	1,210,138
Buildings	2,453,690
Total	3,663,828
Depreciation	149,118
Acquired	Jan. 30, 2013
Life	40 years
JPMorgan Chase Bank, Chicago, IL [Member]
Cost:
Balance at End of Year	3,528,492
Encumbrances	2,029,983
Accumulated Depreciation:
Balance at End of Year
Land	3,528,492
Building & Improvements
Improvements
Carrying Costs
Land	3,528,492
Buildings
Total	3,528,492
Depreciation
Acquired	Nov. 30, 2012
Lowe's Corporation, Lexington, NC [Member]
Cost:
Balance at End of Year	9,597,520
Encumbrances
Accumulated Depreciation:
Balance at End of Year	1,014,021
Land	5,048,640
Building & Improvements	4,548,880
Improvements
Carrying Costs
Land	5,048,640
Buildings	4,548,880
Total	9,597,520
Depreciation	1,014,021
Acquired	Jan. 20, 2005
Life	40 years
PNC Bank, Altamonte Springs, FL [Member]
Cost:
Balance at End of Year	3,846,463
Encumbrances
Accumulated Depreciation:
Balance at End of Year	89,042
Land	3,435,502
Building & Improvements	410,961
Improvements
Carrying Costs
Land	3,435,502
Buildings	410,961
Total	3,846,463
Depreciation	89,042
Acquired	May 25, 2005
Life	40 years
Rite Aid, Renton, WA [Member]
Cost:
Balance at End of Year	6,184,650
Encumbrances
Accumulated Depreciation:
Balance at End of Year	43,213
Land	2,036,235
Building & Improvements	4,148,415
Improvements
Carrying Costs
Land	2,036,235
Buildings	4,148,415
Total	6,184,650
Depreciation	43,213
Acquired	Jul. 25, 2013
Life	40 years
Walgreens, Alpharetta, GA [Member]
Cost:
Balance at End of Year	4,671,783
Encumbrances
Accumulated Depreciation:
Balance at End of Year	342,752
Land	3,265,623
Building & Improvements	1,406,160
Improvements
Carrying Costs
Land	3,265,623
Buildings	1,406,160
Total	4,671,783
Depreciation	342,752
Acquired	Mar. 31, 2004
Life	40 years
Walgreens, Apopka, FL [Member]
Cost:
Balance at End of Year	3,744,612
Encumbrances
Accumulated Depreciation:
Balance at End of Year	330,057
Land	2,390,532
Building & Improvements	1,354,080
Improvements
Carrying Costs
Land	2,390,532
Buildings	1,354,080
Total	3,744,612
Depreciation	330,057
Acquired	Mar. 29, 2004
Life	40 years
Walgreens, Boulder, CO [Member]
Cost:
Balance at End of Year	6,890,120
Encumbrances	3,963,967
Accumulated Depreciation:
Balance at End of Year	304,139
Land	3,474,934
Building & Improvements	3,415,186
Improvements
Carrying Costs
Land	3,474,934
Buildings	3,415,186
Total	6,890,120
Depreciation	304,139
Acquired	Apr. 11, 2012
Life	40 years
Walgreens, Clermont, FL [Member]
Cost:
Balance at End of Year	4,291,114
Encumbrances
Accumulated Depreciation:
Balance at End of Year	993,253
Land	3,021,665
Building & Improvements	1,269,449
Improvements
Carrying Costs
Land	3,021,665
Buildings	1,269,449
Total	4,291,114
Depreciation	993,253
Acquired	May 27, 2004
Life	40 years
Walgreens, Palm Bay, FL [Member]
Cost:
Balance at End of Year	4,260,000
Encumbrances	2,450,828
Accumulated Depreciation:
Balance at End of Year	149,414
Land	1,102,640
Building & Improvements	3,157,360
Improvements
Carrying Costs
Land	1,102,640
Buildings	3,157,360
Total	4,260,000
Depreciation	149,414
Acquired	Feb. 12, 2003
Life	40 years
Mason Commerce Center, Daytona Beach, FL [Member]
Cost:
Balance at End of Year	4,182,509
Encumbrances
Accumulated Depreciation:
Balance at End of Year	831,707
Land	132,609
Building & Improvements	2,554,055
Improvements	1,495,845
Carrying Costs
Land	1,628,454
Buildings	2,554,055
Total	4,182,509
Depreciation	831,707
Construction	Sep. 01, 2008
Life	40 years
Concierge Office Building, Daytona Beach, FL [Member]
Cost:
Balance at End of Year	3,156,043
Encumbrances
Accumulated Depreciation:
Balance at End of Year	465,685
Land	293,872
Building & Improvements	2,862,171
Improvements
Carrying Costs
Land	293,872
Buildings	2,862,171
Total	3,156,043
Depreciation	465,685
Construction	Jul. 01, 2009
Life	40 years
Land, Timber, and Subsurface Interests [Member]
Cost:
Balance at End of Year	15,291,911
Encumbrances
Accumulated Depreciation:
Balance at End of Year	451,052
Land	4,203,083
Building & Improvements
Improvements	10,471,313
Carrying Costs	617,515
Land	15,291,911
Buildings
Total	15,291,911
Depreciation	451,052
Bank of America, Laguna Beach, CA [Member]
Cost:
Balance at End of Year	2,881,300
Accumulated Depreciation:
Balance at End of Year	44,687
Land	1,231,328
Buildings	1,649,972
Total	2,881,300
Depreciation	44,687
Acquired	Dec. 13, 2012
Life	40 years
Bank of America, Mission Viejo, CA (Puerta Real) [Member]
Cost:
Balance at End of Year	1,277,429
Accumulated Depreciation:
Balance at End of Year	20,418
Land	523,539
Buildings	753,890
Total	1,277,429
Depreciation	20,418
Acquired	Dec. 13, 2012
Life	40 years
Bank of America, Mission Viejo, CA (Trabuco) [Member]
Cost:
Balance at End of Year	1,939,163
Accumulated Depreciation:
Balance at End of Year	37,766
Land	544,713
Buildings	1,394,450
Total	1,939,163
Depreciation	$ 37,766
Acquired	Jan. 03, 2013
Life	40 years