Real Estate Assets MF Properties (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Depreciation	$ 5,741,590	$ 5,171,703		$ 4,029,711
Land and land improvements	15,589,893	11,081,992
Buildings and improvements	131,910,221	111,195,695
Carrying Value	147,500,114	122,277,687
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	4,801,533	3,804,499		2,485,365
Number of Units	2,163
Carrying Value	119,980,369	99,498,848
Accumulated Depreciation - MF Properties	(14,108,154)	(9,386,811)
Property, Plant and Equipment, Net	105,872,215	90,112,037
Real Estate [Member] | Arboretum [Member]
Property, Plant and Equipment [Line Items]
Number of Units	145	145
Land and land improvements	1,748,502	1,739,554
Buildings and improvements	19,216,623	19,123,872
Carrying Value	20,965,125	20,863,426
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	12,472,151	12,336,975
Carrying Value	13,040,031	12,904,855
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	4,995,658	4,937,172
Carrying Value	5,739,654	5,681,168
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	5,479,342	5,416,293
Carrying Value	6,167,881	6,104,832
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	8,007,390	7,965,574
Carrying Value	9,145,222	9,103,406
Real Estate [Member] | Residences at Weatherford [Member]
Property, Plant and Equipment [Line Items]
Number of Units	76	76
Land and land improvements	1,942,229	1,927,701
Buildings and improvements	5,724,456	5,695,600
Carrying Value	7,666,685	7,623,301
Real Estate [Member] | Woodland Park [Member]
Property, Plant and Equipment [Line Items]
Number of Units	236	236
Land and land improvements	1,265,160	1,260,032
Buildings and improvements	14,167,096	14,033,777
Carrying Value	15,432,256	15,293,809
Real Estate [Member] | The 50/50 Student Housing--UNL [Member]
Property, Plant and Equipment [Line Items]
Number of Units	475
Land and land improvements	0	0	[1]
Buildings and improvements	32,820,776	13,130,325	[1]
Carrying Value	32,820,776	13,130,325	[1]
Real Estate [Member] | Maples on 97th [Member]
Property, Plant and Equipment [Line Items]
Number of Units	258	258
Land and land improvements	1,180,058	1,180,058
Buildings and improvements	7,822,681	7,613,668
Carrying Value	$ 9,002,739	$ 8,793,726

[1] (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, which was built above a 1,605 parking stall garage to be constructed at the University of Nebraska-Lincoln.