Other Assets Loan Receivable and Allowance (Details) - USD ($)	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	$ 24,995,110		$ 22,191,515
Accrued interest	9,655,577		8,324,812
Loan loss reserves	(7,098,814)		(7,098,814)
Interest Allowance	(8,390,341)		(7,427,074)
Net taxable loans	19,161,532		15,990,439
Arbors at Hickory Ridge [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	191,264		191,264
Accrued interest	36,393		26,047
Loan loss reserves	0		0
Interest Allowance	0		0
Net taxable loans	227,657		217,311
Ashley Square [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	5,078,342		5,078,342
Accrued interest	2,761,407		2,455,660
Loan loss reserves	(3,596,342)		(3,596,342)
Interest Allowance	(2,761,407)		(2,455,660)
Net taxable loans	1,482,000		1,482,000
Avistar Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	274,496		274,496
Accrued interest	42,657		16,470
Loan loss reserves	0		0
Interest Allowance	0		0
Net taxable loans	317,153		290,966
Avistar Portolio-2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	251,622		251,622
Accrued interest	39,102		15,097
Loan loss reserves	0		0
Interest Allowance	0		0
Net taxable loans	290,724		266,719
Cross Creek [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	7,066,588		6,976,087
Accrued interest	2,285,460		2,084,804
Loan loss reserves	(3,447,472)		(3,447,472)
Interest Allowance	(2,285,460)		(2,084,804)
Net taxable loans	3,619,116		3,528,615
Greens of Pine Glen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	850,000		850,000
Accrued interest	380,981		231,342
Loan loss reserves	0		0
Interest Allowance	0		0
Net taxable loans	1,230,981		1,081,342
Foundation for Affordable Housing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	1,460,196		1,560,553	$ 1,603,083
Accrued interest	0		1,735
Loan loss reserves	0		0
Interest Allowance	0		0
Net taxable loans	1,460,196		1,562,288
Lake Forest [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	4,618,704		4,618,704
Accrued interest	2,957,255		2,599,613
Loan loss reserves	(55,000)		(55,000)
Interest Allowance	(2,936,420)		(2,578,778)
Net taxable loans	4,584,539		4,584,539
Ohio Properties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	2,390,446		2,390,447
Accrued interest	1,146,591		894,044
Loan loss reserves	0		0
Interest Allowance	(407,054)		(307,832)
Net taxable loans	3,129,983		$ 2,976,659
Silver Moon [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	2,813,452
Accrued interest	5,731
Loan loss reserves	0
Interest Allowance	0
Net taxable loans	2,819,183
The Suites on Paseo [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	$ 1,100,000	$ 567,340