Consolidated Statements of Shareholders' Equity (Unaudited) (USD $)	Total	Common Stock	Earnings (Deficit)	Beneficial Interest	Noncontrolling Interest	Comprehensive Loss
Beginning balance at Dec. 31, 2010	$ 139,663,174	$ 42,284,483	$ (7,439,249)	$ 34,845,234	$ 105,012,439	$ (194,499)
Beginning balance, shares at Dec. 31, 2010		3,602,853
Issuance of common shares, shares		150,824
Issuance of common shares	2,075,445	2,075,445		2,075,445
Contribution of assets in exchange for the issuance of noncontrolling interest shares	7,109,332				7,109,332
Repurchase of shares, shares		(146,620)
Repurchase of shares	(1,847,406)	(1,847,406)		(1,847,406)
Dividends	(5,753,869)		(1,506,605)	(1,506,605)	(4,247,264)
Dividends declared	(2,932,300)		(759,762)	(759,762)	(2,172,538)
Dividends reinvested-stock dividend, shares		104,157
Dividends reinvested-stock dividend	1,385,267	1,385,267		1,385,267
UPREIT units converted to REIT common shares, shares		64,003
UPREIT units converted to REIT common shares		806,449		806,449	(806,449)
Syndication costs	(198,740)		(130,798)	(130,798)	(67,942)
Decrease in fair value of interest rate swap	(246,176)					(246,176)
Net income	4,683,581		1,230,133	1,230,133	3,453,448
Ending balance at Sep. 30, 2011	143,938,308	44,704,238	(8,606,281)	36,097,957	108,281,026	(440,675)
Ending balance, shares at Sep. 30, 2011		3,775,217
Beginning balance at Dec. 31, 2011	144,226,267	45,009,577	(8,873,113)	36,136,464	108,542,389	(452,586)
Beginning balance, shares at Dec. 31, 2011		3,796,223
Issuance of common shares, shares		1,331,680
Issuance of common shares	18,266,125	18,266,125		18,266,125
Contribution of assets in exchange for the issuance of noncontrolling interest shares	4,058,618				4,058,618
Repurchase of shares, shares		(288,564)
Repurchase of shares	(3,658,636)	(3,658,636)		(3,658,636)
Dividends	(6,395,202)		(1,876,560)	(1,876,560)	(4,518,642)
Dividends declared	(3,335,785)		(1,050,398)	(1,050,398)	(2,285,387)
Dividends reinvested-stock dividend, shares		125,084
Dividends reinvested-stock dividend	1,661,236	1,661,236		1,661,236
UPREIT units converted to REIT common shares, shares		122,251
UPREIT units converted to REIT common shares		1,590,961		1,590,961	(1,590,961)
Syndication costs	(1,158,404)		(1,083,178)	(1,083,178)	(75,226)
Decrease in fair value of interest rate swap	(64,364)					(64,364)
Net income	6,554,005		1,892,692	1,892,692	4,661,313
Ending balance at Sep. 30, 2012	$ 160,153,860	$ 62,869,263	$ (10,990,557)	$ 51,878,706	$ 108,792,104	$ (516,950)
Ending balance, shares at Sep. 30, 2012		5,086,674