Real Estate Assets MF Properties (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Depreciation	$ 5,171,703		$ 4,029,711		$ 3,135,155
Land and land improvements	11,081,992		11,202,876
Buildings and improvements	111,195,695		93,615,479
Carrying Value	122,277,687		104,818,355
Maples on 97th [Member]
Property, Plant and Equipment [Line Items]
Number of Units			258
Land and land improvements			1,154,425
Buildings and improvements			5,912,345
Carrying Value			7,066,770
The 50/50 Student Housing--UNL [Member]
Property, Plant and Equipment [Line Items]
Number of Units	475
Real Estate [Member]
Property, Plant and Equipment [Line Items]
Depreciation	3,804,499		2,485,365		1,451,875
Number of Units	1,582
Carrying Value	99,498,848		62,575,160
Accumulated Depreciation - MF Properties	(9,386,811)		(5,458,961)
Property, Plant and Equipment, Net	90,112,037		57,116,199
Real Estate [Member] | Arboretum [Member]
Property, Plant and Equipment [Line Items]
Number of Units	145		145
Land and land improvements	1,739,554		1,733,259
Buildings and improvements	19,123,872		18,985,031
Carrying Value	20,863,426		20,718,290
Real Estate [Member] | Eagle Village [Member]
Property, Plant and Equipment [Line Items]
Number of Units	511		511
Land and land improvements	567,880		567,880
Buildings and improvements	12,336,975		12,274,056
Carrying Value	12,904,855		12,841,936
Real Estate [Member] | Maples on 97th [Member]
Property, Plant and Equipment [Line Items]
Number of Units	258
Land and land improvements	1,180,058
Buildings and improvements	7,613,668
Carrying Value	8,793,726
Real Estate [Member] | Glynn Place [Member]
Property, Plant and Equipment [Line Items]
Number of Units	128		128
Land and land improvements	743,996		743,996
Buildings and improvements	4,937,172		4,750,267
Carrying Value	5,681,168		5,494,263
Real Estate [Member] | Meadowview [Member]
Property, Plant and Equipment [Line Items]
Number of Units	118		118
Land and land improvements	688,539		688,539
Buildings and improvements	5,416,293		5,214,306
Carrying Value	6,104,832		5,902,845
Real Estate [Member] | Residences at DeCordova [Member]
Property, Plant and Equipment [Line Items]
Number of Units	110		110
Land and land improvements	1,137,832		1,137,832
Buildings and improvements	7,965,574		7,932,742
Carrying Value	9,103,406		9,070,574
Real Estate [Member] | Residences at Weatherford [Member]
Property, Plant and Equipment [Line Items]
Number of Units	76		76
Land and land improvements	1,927,701		1,926,901
Buildings and improvements	5,695,600		5,683,519
Carrying Value	7,623,301		7,610,420
Real Estate [Member] | Woodland Park [Member]
Property, Plant and Equipment [Line Items]
Number of Units	236
Land and land improvements	1,260,032
Buildings and improvements	14,033,777
Carrying Value	15,293,809
Real Estate [Member] | The 50/50 Student Housing--UNL [Member]
Property, Plant and Equipment [Line Items]
Land and land improvements	0	[1]	0	[2]
Buildings and improvements	13,130,325	[1]	936,832	[2]
Carrying Value	$ 13,130,325	[1]	$ 936,832	[2]

[1] (1) The construction work in process represents the costs related to The 50/50 Student Housing at UNL, a 475 student bed mixed-use project, to be built above a 1,605 parking stall garage to be constructed at the University of Nebraska-Lincoln.

[2] (1) The construction work in process represents pre-development architecture and engineering costs related to The 50/50 Student Housing at UNL, a 475 bed student housing project, to be built above a 1,605 parking stall garage to be constructed at the University of Nebraska-Lincoln.