Greystone Housing Impact Investors (GHI) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015
Entity Registrant Name	AMERICA FIRST MULTIFAMILY INVESTORS, L.P.
Entity Central Index Key	1059142
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Common Stock, Units Outstanding	0

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
Assets [Abstract]
Cash and cash equivalents	$24,205,247	$49,193,343
Restricted cash	7,836,842	11,685,729
Interest receivable	5,806,290	4,121,486
Mortgage revenue bonds held in trust, at fair value	426,022,847	378,423,092
Mortgage revenue bonds, at fair value	81,875,851	70,601,045
Public housing capital fund trusts, at fair value	60,272,941	61,263,123
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	14,884,339	14,841,558
Real estate assets:
Land and improvements	15,590,493	15,589,893
Buildings and improvements	132,000,442	131,910,221
Real estate assets before accumulated depreciation	147,590,935	147,500,114
Accumulated depreciation	-26,327,145	-24,691,800
Net real estate assets	121,263,790	122,808,314
Other assets	30,564,221	31,301,527
Total assets	772,732,368	744,239,217
Liabilities [Abstract]
Accounts payable, accrued expenses and other liabilities	4,995,537	4,627,089
Distribution payable	7,607,693	7,617,390
Debt financing	379,307,493	345,359,000
Mortgages payable	76,445,451	76,707,834
Derivative Assets (Liabilities), at Fair Value, Net	1,165,855	0
Total Liabilities	469,522,029	434,311,313
Commitments and Contingencies
Partners' Capital
General Partner	512,533	578,238
Beneficial Unit Certificate holders	323,952,314	330,457,117
Unallocated deficit of Consolidated VIEs	-21,237,622	-21,091,456
Total Partners' Capital	303,227,225	309,943,899
Noncontrolling interest	-16,886	-15,995
Total Capital	303,210,339	309,927,904
Total Liabilities and Partners' Capital	$772,732,368	$744,239,217

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues [Abstract]
Property revenues	$5,106,369	$3,951,216
Investment income	7,979,784	6,205,558
Gain on sale of bonds	0	2,835,243
Interest Income, Operating	224,540	208,823
Total Revenues	13,310,693	13,200,840
Expenses [Abstract]
Real estate operating (exclusive of items shown below)	2,958,605	2,100,293
Depreciation and amortization	2,031,898	1,613,346
Interest	3,989,121	2,169,549
General and administrative	1,807,481	1,270,926
Total Expenses	10,787,105	7,154,114
Net income (loss)	2,523,588	6,046,726
Net income (loss) attributable to noncontrolling interest	891	103
Net income (loss) - America First Tax Exempt Investors, L.P.	2,524,479	6,046,829
Net income (loss) allocated to:
General Partner	26,706	742,055
Limited Partners - Unitholders	2,643,939	5,417,545
Unallocated loss of Consolidated VIEs	-146,166	-112,771
Noncontrolling interest	($891)	($103)
Unitholders' interest in net income per unit (basic and diluted):
Net income (loss), basic and diluted, per unit	$0.04	$0.10
Distributions declared, per unit	$0.13	$0.13
Weighted average number of units outstanding, basic and diluted	60,252,928	56,919,595

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations Parenthetical (USD $)	3 Months Ended
	Mar. 31, 2014
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income (loss)	$2,523,588	$6,046,726
Unrealized Gain (Loss) on Securities	-1,057,235	18,041,725
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	576,225	-3,489,237
Net Income (Loss) Allocated to General Partners	26,706	742,055
Net income (loss) allocated to unitholders	2,643,939	5,417,545
Unallocated loss of Consolidated VIEs	-146,166	-112,771
Net income (loss) attributable to noncontrolling interest	891	103
Accumulated Other Comprehensive Income (Loss) [Member]
Net income (loss)	0	0
Unrealized Gain (Loss) on Securities	-1,057,235	18,041,725
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	576,225	-3,489,237
Net Income (Loss) Allocated to General Partners	10,372	957,364
Net income (loss) allocated to unitholders	1,026,813	26,733,198
Unallocated loss of Consolidated VIEs	-146,166	-112,771
Net income (loss) attributable to noncontrolling interest	-891	-103
Comprehensive income - America First Tax Exempt Investors, L.P.	890,128	27,577,688
Mortgage revenue bonds [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized Gain (Loss) on Securities	1,057,235	18,041,725
Commitments [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$576,225	($3,489,237)

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Partners' Capital (USD $)	Total	General Partner	Number of Units	Beneficial Unit Certificate Holders	Unallocated Deficit of Consolidated VIEs	Noncontrolling Interest	Accumulated Other Comprehensive Income (Loss) [Member]
	USD ($)	USD ($)		USD ($)	USD ($)	USD ($)	USD ($)
Balance at Dec. 31, 2013	$203,122,765	$16,671		$223,573,312	($20,455,896)	($11,322)	($20,128,314)
Partners' Capital Account, Units at Dec. 31, 2013			51,052,928
Stock Issued During Period, Shares, New Issues			9,200,000
Proceeds from Issuance of Common Stock	51,367,692			51,367,692		0	0
Available-for-sale Securities, Gross Realized Gain (Loss)	-1,743,088	-17,431		-1,725,657	0		-1,743,088
Distributions paid or accrued	-8,295,025	-763,409		-7,531,616	0	0	0
Net income (loss)	6,046,726	742,055		5,417,545	-112,771	-103	0
Unrealized Gain (Loss) on Securities	18,041,725	180,417		17,861,308	0	0	18,041,725
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	3,489,237	34,892		3,454,345	0	0	3,489,237
Balance at Mar. 31, 2014	272,030,032	193,195		292,416,929	-20,568,667	-11,425	-340,441
Balance at Dec. 31, 2014	309,927,904	578,238		330,457,117	-21,091,456	-15,995	51,698,418
Partners' Capital Account, Units at Dec. 31, 2014			60,252,928
Distributions paid or accrued	-7,607,693	-76,077		-7,531,616	0	0	0
Net income (loss)	2,523,588	26,706		2,643,939	-146,166	-891	0
Unrealized Gain (Loss) on Securities	-1,057,235	-10,572		-1,046,663	0	0	-1,057,235
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	-576,225	-5,762		-570,463	0	0	-576,225
Balance at Mar. 31, 2015	$303,210,339	$512,533		$323,952,314	($21,237,622)	($16,886)	$50,064,958

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income (loss)	$2,523,588	$6,046,726
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Depreciation and amortization expense	2,031,898	1,613,346
Non-cash gain (loss) on derivatives	899,873	182,597
Bond discount and premium amortization and accretion	-36,933	-62,008
Gain on sale of bonds	0	-2,835,243
Changes in operating assets and liabilities, net of effect of acquisitions
Increase (decrease) in interest receivable	-1,684,804	-1,783,906
(Increase) decrease in other assets	127,115	918,897
Increase (decrease) in accounts payable and accrued expenses	311,641	-2,192,953
Net cash provided (used) by operating activities	4,172,378	1,887,456
Cash flows from investing activities:
Capital expenditures	-91,968	-6,323,590
Acquisition of tax-exempt mortgage revenue bonds	-58,945,000	-34,778,800
Proceeds from the sale/redemption of bonds	0	18,744,294
Purchase of rate derivative	10,500	-391,500
Decrease in restricted cash	-46,780	-73,820
Net increase in notes receivable	39,337	0
Restricted cash - debt collateral released	1,370,000	2,000,000
Restricted cash - 2014 TEBS financing facility	2,474,249	0
Principal payments received on taxable bonds	202,888	1,778,734
Net cash provided (used) by investing activities	-55,065,448	-19,044,682
Cash flows from financing activities:
Distributions paid	-7,617,390	-6,446,077
Principal borrowings on mortgages payable	48,285,000	17,250,000
Principal borrowing on line of credit	0	7,976,690
Proceeds from sale of beneficial unit certificates	0	54,740,000
Payments of Stock Issuance Costs	0	-3,372,308
Principal payments on debt and mortgage financing	-25,761,768	-17,013,000
Repayments of Debt	-262,383	-113,919
Net change in line of credit	11,425,261	0
Increase (decrease) in liabilities related to restricted cash	46,780	73,820
Debt financing costs	210,526	557,094
Net cash (used) provided by financing activities	25,904,974	52,538,112
Net increase (decrease) in cash and cash equivalents	-24,988,096	35,380,886
Cash and cash equivalents at beginning of period, including discontinued operations	49,193,343
Cash and cash equivalents at end of period, including discontinued operations	24,205,247	46,698,901
Cash paid during the period for interest	2,833,471	1,798,217
Distributions declared but not paid	7,607,693	8,295,025
Capital expenditures financed through payables	$56,806	$3,475,757

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Basis of Presentation [Abstract]
Basis of Presentation and Significant Accounting Policies [Text Block]	Basis of Presentation
	General
	America First Multifamily Investors, L.P. (the “Partnership”) was formed on April 2, 1998, under the Delaware Revised Uniform Limited Partnership Act for the primary purpose of acquiring, holding, selling and otherwise dealing with a portfolio of mortgage revenue bonds which have been issued to provide construction and/or permanent financing for affordable multifamily, student housing, and senior citizen residential properties (collectively “Residential Properties”) and commercial properties. The Partnership expects and believes the interest earned on these mortgage revenue bonds is excludable from gross income for federal income tax purposes.  As a result, most of the income earned by the Partnership is exempt from federal income taxes.  The Partnership may also invest in other types of securities that may or may not be secured by real estate and may make property loans secured by multifamily residential properties which are financed by mortgage revenue bonds held by the Partnership.  The Partnership generally does not seek to acquire direct interests in real property as long term or permanent investments.  The Partnership may, however, acquire real estate securing its mortgage revenue bonds or property loans through foreclosure in the event of a default.  In addition, the Partnership may acquire interests in multifamily, student, and senior citizen residential properties (“MF Properties”) in order to position itself for future investments in mortgage revenue bonds issued to finance these properties. The Partnership expects to sell its interest in these MF Properties in connection with the future syndication of low income housing tax credits under Section 42 of the Internal Revenue Code (“LIHTCs”) or to a tax-exempt organization and to acquire mortgage revenue bonds on these properties to provide debt financing to the new owners.
	Our general partner is America First Capital Associates Limited Partnership Two (“AFCA 2” or “General Partner”).  The general partner of AFCA2 is The Burlington Capital Group LLC (“Burlington”). The Partnership has issued Beneficial Unit Certificates (“BUCs”) representing assigned limited partner interests to investors (“unitholders”).  The Partnership will terminate on December 31, 2050, unless terminated earlier under provisions of its Agreement of Limited Partnership.
	The “Company” refers to the Partnership and the Consolidated VIEs (defined below). The condensed consolidated financial statements reported in this Form 10-Q include the financial position and results of operations of the Partnership, the MF Properties owned by various limited partnerships in which one of the Partnership’s wholly-owned subsidiaries holds a 99% limited partner interest, and two entities in which the Partnership does not hold an ownership interest but which own multifamily residential properties financed with mortgage revenue bonds held by the Partnership and which are treated as variable interest entities (“VIEs”) of which the Partnership has been determined to be the primary beneficiary (the “Consolidated VIEs”). On March 31, 2015, the consolidated subsidiaries of the Partnership (the “Consolidated Subsidiaries”) consist of:
	•	ATAX TEBS I, LLC, a special purpose entity owned and controlled by the Partnership, created in 2010 to hold mortgage revenue bonds in order to facilitate the Tax Exempt Bond Securitization (“TEBS”) Financing (“M24 TEBS Financing”) with Freddie Mac (Note 9).
	•	ATAX TEBS II, LLC, a special purpose entity owned and controlled by the Partnership, created in 2014 to hold mortgage revenue bonds in order to facilitate the second TEBS Financing (“M31 TEBS Financing”) with Freddie Mac (Note 9).
	•	Nine MF Properties which are either wholly or majority owned by subsidiaries of the Partnership.
	Stand alone financial information of the Partnership reported in this Form 10-Q includes only the assets, liabilities, and results of operations of the Partnership and the MF Properties (hereafter the “Partnership”) without the Consolidated VIEs.  In the Company’s condensed consolidated financial statements, all transactions and accounts between the Partnership, the MF Properties and the Consolidated VIEs have been eliminated in consolidation.  The General Partner does not believe that the consolidation of VIEs for reporting under accounting principles generally accepted in the United States of America (“GAAP”) impacts the Partnership’s status as a partnership for federal income tax purposes or the status of unitholders as partners of the Partnership, the treatment of the mortgage revenue bonds on the properties owned by Consolidated VIEs as debt, the nature of the interest payments, which it believes to be tax-exempt, received on the mortgage revenue bonds secured by the properties owned by Consolidated VIEs or the manner in which the Partnership’s income is reported to unitholders on IRS Form K-1.
	The unallocated deficit of the Consolidated VIEs is primarily comprised of the accumulated historical net losses of the Consolidated VIEs since the applicable consolidation date. The unallocated deficit of the VIEs and the VIEs’ net losses subsequent to that date are not allocated to the General Partner and unitholders as such activity is not contemplated by, or addressed in, the Agreement of Limited Partnership.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.  The accompanying interim unaudited condensed consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. The condensed consolidated financial statements should be read in conjunction with the condensed consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014. These condensed consolidated financial statements and notes have been prepared consistently with the 2014 Form 10-K. In the opinion of management, all adjustments (consisting of normal and recurring accruals) necessary to present fairly the financial position as of March 31, 2015, and the results of operations for the interim periods presented have been made. The results of operations for the interim period are not necessarily indicative of the results to be expected for the full year.

Partnership_Income_Expense_and

Partnership Income, Expense and Cash Distributions	3 Months Ended
	Mar. 31, 2015
Partnership Income, Expenses and Cash Distributions [Abstract]
Partnership Income Expenses and Cash Distributions [Text Block]	Partnership Income, Expenses and Cash Distributions
	The Agreement of Limited Partnership of the Partnership contains provisions for the distribution of Net Interest Income, Net Residual Proceeds and Liquidation Proceeds, for the allocation of income or loss from operations and for the allocation of income and loss arising from a repayment, sale, or liquidation of investments.  Income and losses will be allocated to each unitholder on a periodic basis, as determined by the General Partner, based on the number of BUCs held by each unitholder as of the last day of the period for which such allocation is to be made. Distributions of Net Interest Income and Net Residual Proceeds will be made to each unitholder of record on the last day of each distribution period based on the number of BUCs held by each unitholder as of such date. For purposes of the Agreement of Limited Partnership, cash distributions, if any, received by the Partnership from its investment in MF Properties (Note 7) will be included in the Partnership’s Interest Income and cash distributions received by the Partnership from the sale of such properties will be included in the Partnership’s Residual Proceeds.
	Cash distributions are currently made on a quarterly basis but may be made on a monthly or semiannual basis at the election of AFCA 2.  On each distribution date, Net Interest Income is distributed 99% to the unitholders and 1% to AFCA 2 and Net Residual Proceeds are distributed 100% to unitholders except that Net Interest Income and Net Residual Proceeds representing contingent interest in an amount equal to 0.9% per annum of the principal amount of the mortgage revenue bonds on a cumulative basis (defined as Net Interest Income (Tier 2) and Net Residual Proceeds (Tier 2), respectively) are distributed 75% to the unitholders and 25% to AFCA 2.

Variable_Interest_Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2015
Variable Interest Entities [Abstract]
Variable interest entities [Text Block]	Variable Interest Entities
	The Partnership invests in mortgage revenue bonds which have been issued to provide construction and/or permanent financing for Residential Properties and commercial properties in their market areas.  The Partnership owns 100% of these mortgage revenue bonds and each bond is secured by a first mortgage on the property.  In certain cases, the Partnership has also made property loans to the property owners which are secured by second mortgages on these properties.  Although Residential Properties financed with mortgage revenue bonds held by the Partnership is owned by a separate entity in which the Partnership has no equity ownership interest, the debt financing provided by the Partnership creates a variable interest in these ownership entities that may require the Partnership to report the assets, liabilities, and results of operations of these entities on a consolidated basis under GAAP.  Under consolidation guidance, the Partnership must make an evaluation of these entities to determine if they meet the definition of a VIE.
	At March 31, 2015 and December 31, 2014, the Partnership determined that eleven of the entities financed by mortgage revenue bonds owned by the Partnership were held by VIEs.  These VIEs were Ashley Square, Bent Tree, Bruton Apartments, Cross Creek, Fairmont Oaks, Glenview Apartments, Harden Ranch, Montclair Apartments, Santa Fe Apartments, Tyler Park Apartments, and Westside Village Market. The Partnership then determined that it is the primary beneficiary of two of these VIEs: Bent Tree and Fairmont Oaks and has continued to consolidate these entities.
	The Partnership does not hold an equity interest in these VIEs. Therefore, the assets of the VIEs cannot be used to settle the general commitments of the Partnership and the Partnership is not responsible for the commitments and liabilities of the VIEs.  The primary risks to the Partnership associated with these VIEs relate to the entities’ ability to meet debt service obligations to the Partnership and the valuation of the underlying Residential Properties which serves as bond collateral.
	The following is a discussion of the significant judgments and assumptions made by the Partnership in determining the primary beneficiary of the VIE and, therefore, whether the Partnership must consolidate the VIE.
	Consolidated VIEs
	In determining the primary beneficiary of these VIEs, the Partnership considers the activities of the VIE which most significantly impact the VIEs’ economic performance, who has the power to control such activities, the risks which the entities were designed to create, the variability associated with those risks and the interests which absorb such variability.  The Partnership also considers the related party relationship of the entities involved in the VIEs.  At March 31, 2015 and December 31, 2014, the Partnership determined it is the primary beneficiary of the Bent Tree and Fairmont Oaks VIEs. The capital structure of Bent Tree and Fairmont Oaks VIEs consists of senior debt, subordinated debt, and equity capital. The senior debt is in the form of a mortgage revenue bond and accounts for the majority of the VIEs’ total capital. As the bondholder, the Partnership is entitled to principal and interest payments and has certain protective rights as established by the bond documents. The equity ownership of the consolidated VIEs is ultimately held by corporations which are owned by four individuals, two of which are related parties.  Additionally, each of these properties is managed by an affiliate of the Partnership, America First Properties Management Company, LLC (“Properties Management”) which is an affiliate of Burlington.
	Non-Consolidated VIEs
	The Company did not consolidate nine VIE entities (Ashley Square, Bruton Apartments, Cross Creek, Glenview Apartments Harden Ranch, Montclair Apartments, Santa Fe Apartments, Tyler Park Apartments, and Westside Village Market) as of March 31, 2015 based on its determination of the primary beneficiary of these nine VIE entities. As discussed below, while the capital structures of these VIEs resulted in the Partnership holding a majority of the variable interests in these VIEs, the Partnership determined it does not have the power to direct the activities of these VIEs that most significantly impact the VIEs’ economic performance and, as a result, is not the primary beneficiary of these VIEs.
	The following table presents information regarding the classification of the assets at their carrying value and maximum exposure to loss held by the Partnership as of March 31, 2015, which constitute VIEs:
		31-Mar-15
		Balance Sheet Classification								Maximum Exposure to Loss
		Mortgage Revenue Bond				Property Loan				Mortgage Revenue Bond				Property Loan
	Ashley Square Apartments	$	5,642,269			$	1,482,000			$	5,144,000			$	7,635,520
	Bruton Apartments	19,443,819				—				18,145,000				—
	Cross Creek	8,547,448				3,586,115				6,082,064				3,586,115
	Glenview Apartments	6,855,286				—				6,723,000				—
	Harden Ranch	9,920,953				—				9,300,000				—
	Montclair Apartments	3,606,478				—				3,458,000				—
	Santa Fe Apartments	4,856,631				—				4,736,000				—
	Tyler Park Apartments	8,474,338				—				8,100,000				—
	Westside Village Market	5,644,156				—				5,400,000				—
		$	72,991,378			$	5,068,115			$	67,088,064			$	11,221,635
	The mortgage revenue bonds are classified on the balance sheet as available for sale investments and are carried at fair value while property loans are presented on the balance sheet as Other assets and are carried at the unpaid principal less any loan loss reserves.  See Note 4 for additional information regarding the mortgage revenue bonds and Note 8 for additional information regarding the property loans.  The maximum exposure to loss for the mortgage revenue bonds is equal to the unpaid principal balance as of March 31, 2015.  The difference between the mortgage revenue bond’s carrying value and the maximum exposure to loss is a function of the fair value of the bond.  The difference between the property loan’s carrying value and the maximum exposure is the value of loan loss reserves that have been previously recorded against the outstanding property loan balances.
	The following tables present the effects of the consolidation of the Consolidated VIEs on the Company’s Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Operations.
	Condensed Consolidating Balance Sheets as of March 31, 2015 and December 31, 2014:
			Partnership as of March 31, 2015				Consolidated VIEs as of March 31, 2015				Consolidation -Elimination as of March 31, 2015				Total as of March 31, 2015
	Assets
	Cash and cash equivalents		$	24,180,224			$	25,023			$	—			$	24,205,247
	Restricted cash		7,350,135				486,707				—				7,836,842
	Interest receivable		6,476,392				—				(670,102		)		5,806,290
	Mortgage revenue bonds held in trust, at fair value		442,029,721				—				(16,006,874		)		426,022,847
	Mortgage revenue bonds, at fair value		81,875,851				—				—				81,875,851
	Public housing capital fund trusts, at fair value		60,272,941				—				—				60,272,941
	Mortgage-backed securities, at fair value		14,884,339				—				—				14,884,339
	Real estate assets:
	Land and improvements		13,754,093				1,836,400				—				15,590,493
	Buildings and improvements		110,742,966				21,257,476				—				132,000,442
	Real estate assets before accumulated depreciation		124,497,059				23,093,876				—				147,590,935
	Accumulated depreciation		(15,513,016		)		(10,814,129		)		—				(26,327,145		)
	Net real estate assets		108,984,043				12,279,747				—				121,263,790
	Other assets		41,298,994				377,523				(11,112,296		)		30,564,221
	Total Assets		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
	Liabilities
	Accounts payable, accrued expenses and other liabilities		$	4,623,103			$	22,479,786			$	(22,107,352	)		$	4,995,537
	Distribution payable		7,607,693				—				—				7,607,693
	Debt financing		379,307,493				—				—				379,307,493
	Mortgage payable		76,445,451				14,686,000				(14,686,000		)		76,445,451
	Derivative swap		1,165,855				—				—				1,165,855
	Total Liabilities		469,149,595				37,165,786				(36,793,352		)		469,522,029
	Partners' Capital
	General Partner		512,533				—				—				512,533
	Beneficial Unit Certificate holders		317,707,398				—				6,244,916				323,952,314
	Unallocated loss of Consolidated VIEs		—				(23,996,786		)		2,759,164				(21,237,622		)
	Total Partners' Capital		318,219,931				(23,996,786		)		9,004,080				303,227,225
	Noncontrolling interest		(16,886		)		—				—				(16,886		)
	Total Capital		318,203,045				(23,996,786		)		9,004,080				303,210,339
	Total Liabilities and Partners' Capital		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
			Partnership as of December 31, 2014				Consolidated VIEs as of December 31, 2014				Consolidation -Elimination as of December 31, 2014				Total as of December 31, 2014
	Assets
	Cash and cash equivalents		$	49,157,571			$	35,772			$	—			$	49,193,343
	Restricted cash		11,141,496				544,233				—				11,685,729
	Interest receivable		4,791,828				—				(670,342		)		4,121,486
	Mortgage revenue bonds held in trust, at fair value		394,568,208				—				(16,145,116		)		378,423,092
Mortgage revenue bonds, at fair value		70,601,045				—				—				70,601,045
Public housing capital fund trusts, at fair value		61,263,123				—				—				61,263,123
Mortgage-backed securities, at fair value		14,841,558				—				—				14,841,558
Real estate assets:
Land and improvements		13,753,493				1,836,400				—				15,589,893
Buildings and improvements		110,706,173				21,204,048				—				131,910,221
Real estate assets before accumulated depreciation		124,459,666				23,040,448				—				147,500,114
Accumulated depreciation		(14,108,154		)		(10,583,646		)		—				(24,691,800		)
Net real estate assets		110,351,512				12,456,802				—				122,808,314
Other assets		41,958,914				420,054				(11,077,441		)		31,301,527
Total Assets		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217
Liabilities
Accounts payable, accrued expenses and other liabilities		$	4,123,346			$	22,225,477			$	(21,721,734	)		$	4,627,089
Distribution payable		7,617,390				—				—				7,617,390
Debt financing		345,359,000				—				—				345,359,000
Mortgages payable		76,707,834				14,731,000				(14,731,000		)		76,707,834
Total Liabilities		433,807,570				36,956,477				(36,452,734		)		434,311,313
Partners' Capital
General Partner		578,238				—				—				578,238
Beneficial Unit Certificate holders		324,305,442				—				6,151,675				330,457,117
Unallocated deficit of Consolidated VIEs		—				(23,499,616		)		2,408,160				(21,091,456		)
Total Partners' Capital		324,883,680				(23,499,616		)		8,559,835				309,943,899
Noncontrolling interest		(15,995		)		—				—				(15,995		)
Total Capital		324,867,685				(23,499,616		)		8,559,835				309,927,904
Total Liabilities and Partners' Capital		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217
Condensed Consolidating Statements of Operations for the three months ended March 31, 2015 and 2014:
	Partnership For the Three Months Ended March 31, 2015				Consolidated VIEs For the Three Months Ended March 31, 2015				Consolidation -Elimination For the Three Months Ended March 31, 2015				Total For the Three Months Ended March 31, 2015
Revenues:
Property revenues	$	4,302,301			$	804,068			$	—			$	5,106,369
Investment income	8,210,394				—				(230,610		)		7,979,784
Other interest income	224,540				—				—				224,540
Total revenues	12,737,235				804,068				(230,610		)		13,310,693
Expenses:
Real estate operating (exclusive of items shown below)	2,471,030				487,575				—				2,958,605
Depreciation and amortization	1,794,814				243,729				(6,645		)		2,031,898
Interest	3,994,156				569,934				(574,969		)		3,989,121
General and administrative	1,807,481				—				—				1,807,481
Total expenses	10,067,481				1,301,238				(581,614		)		10,787,105
Net income (loss)	2,669,754				(497,170		)		351,004				2,523,588
Net loss attributable to noncontrolling interest	(891		)		—				—				(891		)
Net income (loss) - America First Multifamily Investors, L. P.	$	2,670,645			$	(497,170	)		$	351,004			$	2,524,479
	Partnership For the Three Months Ended March 31, 2014				Consolidated VIEs For the Three Months Ended March 31, 2014				Consolidation -Elimination For the Three Months Ended March 31, 2014				Total For the Three Months Ended March 31, 2014
Revenues:
Property revenues	$	3,150,344			$	800,872			$	—			$	3,951,216
Investment income	6,438,835				—				(233,277		)		6,205,558
Gain on mortgage revenue bond - redemption	2,835,243				—				—				2,835,243
Other interest income	208,823				—				—				208,823
Total revenues	12,633,245				800,872				(233,277		)		13,200,840
Expenses:
Real estate operating (exclusive of items shown below)	1,650,647				449,646				—				2,100,293
Depreciation and amortization	1,382,626				237,440				(6,720		)		1,613,346
Interest	2,169,549				557,884				(557,884		)		2,169,549
General and administrative	1,270,926				—				—				1,270,926
Total expenses	6,473,748				1,244,970				(564,604		)		7,154,114
Net income (loss)	6,159,497				(444,098		)		331,327				6,046,726
Net loss attributable to noncontrolling interest	(103		)		—				—				(103		)
Net income (loss) - America First Multifamily Investors, L. P.	$	6,159,600			$	(444,098	)		$	331,327			$	6,046,829

Investments_in_Mortgage_Revenu

Investments in Mortgage Revenue Bonds	3 Months Ended
	Mar. 31, 2015
Investments in Mortgage Revenue Bonds [Abstract]
Investments in Debt and Equity Instruments, Cash and Cash Equivalents, Unrealized and Realized Gains (Losses) [Text Block]	Investments in Mortgage Revenue Bonds
	The mortgage revenue bonds owned by the Company have been issued to provide construction and/or permanent financing for Residential Properties and commercial properties and do not include the mortgage revenue bonds issued with respect to properties owned by Consolidated VIEs at March 31, 2015 and December 31, 2014. Mortgage revenue bonds are either held directly by the Company or are held in trusts created in connection with debt financing transactions (Note 9). The Company had the following investments in mortgage revenue bonds as of dates shown:
			March 31, 2015
	Description of Mortgage Revenue Bonds		Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
	Arbors at Hickory Ridge (3)		$	11,569,614	$	1,239,453	$	—		$	12,809,067
	Ashley Square (1)		5,144,000		498,269		—			5,642,269
	Avistar at Chase Hill A Bond (3)		10,000,000		1,226,837		—			11,226,837
	Avistar at the Crest A Bond (3)		9,700,000		1,054,230		—			10,754,230
	Avistar at the Oaks A Bond (3)		7,800,000		802,611		—			8,602,611
	Avistar in 09 A Bond (3)		6,735,000		787,493		—			7,522,493
	Avistar on the Boulevard A Bond (3)		16,525,000		1,795,997		—			18,320,997
	Avistar on the Hills A Bond (3)		5,389,000		554,521		—			5,943,521
	Bella Vista (1)		6,490,000		573,067		—			7,063,067
	Bridle Ridge (1)		7,625,000		595,665		—			8,220,665
	Brookstone (1)		7,469,357		1,652,619		—			9,121,976
	Bruton Apartments (2)		18,145,000		1,298,819		—			19,443,819
	Concord at Gulfgate A Bond (2)		17,060,000		1,417,004		—			18,477,004
	Concord at Little York A Bond (2)		12,480,000		820,061		—			13,300,061
	Concord at Williamcrest A Bond (2)		18,020,000		1,184,094		—			19,204,094
	Copper Gate Apartments (3)		5,220,000		390,143		—			5,610,143
	Cross Creek (1)		6,082,064		2,465,384		—			8,547,448
	Decatur Angle (2)		23,000,000		727,260		—			23,727,260
	Greens Property A Bond (3)		8,348,000		943,736		—			9,291,736
	Harden Ranch A Bond (3)		6,960,000		623,129		—			7,583,129
	Lake Forest (1)		8,856,000		1,037,354		—			9,893,354
	Live 929 Apartments (2)		40,874,690		4,154,777		—			45,029,467
	Pro Nova 2014-1 and 2014-2 (2)		20,092,423		889,777		—			20,982,200
	Ohio Properties A Bonds (1)		14,383,000		2,328,438		—			16,711,438
	Runnymede (1)		10,440,000		1,297,483		—			11,737,483
	Southpark (1)		11,861,623		3,599,239		—			15,460,862
	The Palms at Premier Park Apartments (3)		20,125,232		2,005,005		—			22,130,237
	The Suites on Paseo A Bond (2)		35,450,000		2,901,583		—			38,351,583
	Tyler Park Apartments A Bond (3)		6,075,000		383,329		—			6,458,329
	Westside Village Market A Bond (3)		3,970,000		250,505		—			4,220,505
	Woodlynn Village (1)		4,390,000		244,962		—			4,634,962
	Mortgage revenue bonds held in trust		$	386,280,003	$	39,742,844	$	—		$	426,022,847
	(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
	(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
	(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
			31-Mar-15
	Description of Mortgage Revenue Bonds		Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
	Avistar at Chase Hill B Bond		$	965,000	$	88,486	$	—		$	1,053,486
	Avistar at the Crest B Bond		759,000		69,600		—			828,600
	Avistar at the Oaks B Bond		554,000		50,841		—			604,841
	Avistar in 09 B Bond		457,000		41,939		—			498,939
	Avistar on the Boulevard B Bond		451,000		41,357		—			492,357
	Concord at Gulfgate B Bond		2,125,000		592,323		—			2,717,323
	Concord at Little York B Bond		960,000		252,586		—			1,212,586
	Concord at Williamcrest B Bond		2,800,000		736,708		—			3,536,708
	Glenview Apartments		6,723,000		132,286		—			6,855,286
	Greens Property B Bond		945,059		249,820		—			1,194,879
	Harden Ranch B Bond		2,340,000		—		(2,176		)	2,337,824
	Heritage Square		11,705,000		295,073		—			12,000,073
	Montclair Apartments		3,458,000		148,478		—			3,606,478
	Ohio Properties B Bonds		3,570,720		644,819		—			4,215,539
	Renaissance		12,675,000		762,823		—			13,437,823
	Santa Fe Apartments		4,736,000		120,631		—			4,856,631
	The Suites on Paseo B Bond		5,500,000		—		—			5,500,000
	Tyler Park B Bond		2,025,000		—		(8,991		)	2,016,009
	Vantage at Harlingen		6,692,000		260,386		—			6,952,386
	Vantage at Judson		6,049,000		485,432		—			6,534,432
	Westside Village B Bond		1,430,000		—		(6,349		)	1,423,651
	Mortgage revenue bonds		$	76,919,779	$	4,973,588	$	(17,516	)	$	81,875,851
			31-Dec-14
Description of Mortgage Revenue Bonds		Cost adjusted for pay-downs		Unrealized Gains		Unrealized Loss			Estimated Fair Value
Arbors at Hickory Ridge (3)		$	11,570,933	$	1,792,303	$	—		$	13,363,236
Ashley Square (1)		5,159,000		486,559		—			5,645,559
Avistar at Chase Hill A Bond (3)		10,000,000		1,196,800		—			11,196,800
Avistar at the Crest A Bond (3)		9,700,000		1,419,692		—			11,119,692
Avistar at the Oaks A Bond(3)		7,800,000		869,622		—			8,669,622
Avistar in 09 A Bond (3)		6,735,000		750,885		—			7,485,885
Avistar on the Boulevard A Bond (3)		16,525,000		2,418,599		—			18,943,599
Avistar on the Hills A Bond (3)		5,389,000		743,520		—			6,132,520
Bella Vista (1)		6,490,000		625,571		—			7,115,571
Bridle Ridge (1)		7,655,000		659,249		—			8,314,249
Brookstone (1)		7,468,888		1,360,589		—			8,829,477
Bruton Apartments (2)		18,145,000		1,455,955		—			19,600,955
Copper Gate Apartments (3)		5,220,000		563,656		—			5,783,656
Cross Creek (1)		6,074,817		2,542,262		—			8,617,079
Decatur Angle (2)		23,000,000		919,540		—			23,919,540
Greens Property A Bond (3)		8,366,000		1,005,119		—			9,371,119
Harden Ranch A Bond (3)		6,960,000		511,421		—			7,471,421
Lake Forest (1)		8,886,000		1,003,614		—			9,889,614
Live 929 Apartments (2)		40,895,739		3,797,745		—			44,693,484
Pro Nova 2014-1 and 2014-2 (2)		20,095,169		1,043,431		—			21,138,600
Ohio Properties A Bonds (1)		14,407,000		2,444,034		—			16,851,034
Runnymede (1)		10,440,000		1,385,910		—			11,825,910
Southpark (1)		11,842,206		3,743,692		—			15,585,898
The Palms at Premier Park Apartments (3)		20,152,000		2,680,619		—			22,832,619
The Suites on Paseo (2)		35,450,000		3,193,691		—			38,643,691
Tyler Park Apartments A Bond (3)		6,075,000		345,060		—			6,420,060
Westside Village Market A Bond (3)		3,970,000		225,496		—			4,195,496
Woodlynn Village (1)		4,390,000		376,706		—			4,766,706
Mortgage revenue bonds held in trust		$	338,861,752	$	39,561,340	$	—		$	378,423,092
(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
		31-Dec-14
Description of Mortgage Revenue Bonds		Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Avistar at Chase Hill B Bond		$	965,000	$	144,769	$	—		$	1,109,769
Avistar at the Crest B Bond		759,000		124,286		—			883,286
Avistar at the Oaks B Bond		554,000		54,325		—			608,325
Avistar in 09 B Bond		457,000		50,608		—			507,608
Avistar on the Boulevard B Bond		451,000		73,851		—			524,851
Greens Property B Bond		945,638		376,203		—			1,321,841
Glenview Apartments		6,723,000		—		—			6,723,000
Harden Ranch B Bond		2,340,000		—		(1,501		)	2,338,499
Heritage Square		11,705,000		1,109,125		—			12,814,125
Montclair Apartments		3,458,000		—		—			3,458,000
Ohio Properties B Bonds		3,573,430		668,542		—			4,241,972
Renaissance		12,675,000		1,055,807		—			13,730,807
Santa Fe Apartments		4,736,000		—		—			4,736,000
Tyler Park Apartments B Bond		2,025,000		—		(17,395		)	2,007,605
Vantage at Harlingen		6,692,000		707,813		—			7,399,813
Vantage at Judson		6,049,000		717,230		—			6,766,230
Westside Village Market B Bond		1,430,000		—		(686		)	1,429,314
Mortgage revenue bonds		$	65,538,068	$	5,082,559	$	(19,582	)	$	70,601,045
In March 2015, the Partnership acquired the approximate $35.6 million B bond related to The Suites on Paseo at a fair market value of $5.5 million.
In January 2015, the Partnership acquired six mortgage revenue bonds. They are as follows:
•	The Partnership purchased approximately $17.1 million par value Series 2015A and approximately $2.1 million par value of Series 2015B mortgage revenue bonds. These mortgage revenue bonds are secured by Concord at Gulfgate Apartments, a 288 unit multifamily residential property located in Houston, Texas.
•	The Partnership purchased approximately $12.5 million par value Series 2015A and approximately $1.0 million par value of Series 2015B mortgage revenue bonds. These mortgage revenue bonds are secured by Concord at Little York Apartments, a 276 unit multifamily residential property located in Houston, Texas.
•	The Partnership purchased approximately $18.0 million par value Series 2015A and approximately $2.8 million par value of Series 2015B mortgage revenue bonds. These mortgage revenue bonds are secured by Concord at Williamcrest Apartments, a 288 unit multifamily residential property located in Houston, Texas.
These three Series A mortgage revenue bonds each carry an annual interest rate of 6.0% and mature on February 1, 2032. The three Series B mortgage revenue bonds each carry an annual interest rate of 12.0% and mature on March 1, 2032. In February 2015, the Partnership borrowed approximately $33.3 million under three Tender Option Bond (“TOB”) Trusts under the existing TOB structure securitizing these mortgage revenue bonds (Note 9).
The properties securing the Company’s mortgage revenue bonds are geographically dispersed throughout the United States with significant concentrations in California and Texas. As of March 31, 2015 and December 31, 2014, the concentration in California, as a percentage of principal outstanding, was approximately 19% and 18%, respectively. As of March 31, 2015 and December 31, 2014, the concentration in Texas, as a percentage of principal outstanding, was approximately 45% and 38%, respectively.
Valuation - As all of the Company’s investments in mortgage revenue bonds are classified as available-for-sale securities, they are carried on the balance sheet at their estimated fair values.  As of March 31, 2015, the weighted average base rate of the mortgage revenue bonds reported in the condensed consolidated financial statements was approximately 6.0% per annum. Due to the limited market for the mortgage revenue bonds, these estimates of fair value do not necessarily represent what the Company would actually receive in a sale of the mortgage revenue bonds.  There is no active trading market for the mortgage revenue bonds and price quotes for the mortgage revenue bonds are not generally available.  As of March 31, 2015, all of the Company’s mortgage revenue bonds were valued using discounted cash flow and yield to maturity analyses performed by management.  Management’s valuation encompasses judgment in its application.  The key assumption in management’s yield to maturity analysis is the range of effective yields on the individual mortgage revenue bonds.  The effective yield analysis for each mortgage revenue bond considers the current market yield on similar mortgage revenue bonds as well as the debt service coverage ratio of each underlying property serving as collateral for the mortgage revenue bond. At March 31, 2015, the range of effective yields on the individual mortgage revenue bonds was 4.8% to 9.6% per annum.  At December 31, 2014, the range of effective yields on the individual mortgage revenue bonds was 4.7% to 8.3% per annum. Additionally, the Company calculated the sensitivity of the key assumption used in calculating the fair values of these mortgage revenue bonds.  Assuming a 10% adverse change in the key assumption, the effective yields on the individual mortgage revenue bonds would increase to a range of 5.2% to 10.5% per annum and would result in additional unrealized losses on the mortgage revenue bond portfolio of approximately $32.6 million.  This sensitivity analysis is hypothetical and is as of a specific point in time.  The results of the sensitivity analysis may not be indicative of actual changes in fair value and should be used with caution.  If available, the general partner may also consider price quotes on similar mortgage revenue bonds or other information from external sources, such as pricing services.  Pricing services, broker quotes and management’s analyses provide indicative pricing only.
Unrealized gains or losses on these mortgage revenue bonds are recorded in accumulated other comprehensive income (loss) to reflect changes in their estimated fair values resulting from market conditions and fluctuations in the present value of the expected cash flows from the underlying properties. As of March 31, 2015, Harden Ranch B, Tyler Park Apartments B, and Westside Village Market B mortgage revenue bond investments have been in unrealized loss positions for greater than twelve months.

Public_Housing_Capital_Fund_Tr

Public Housing Capital Fund Trusts	3 Months Ended
	Mar. 31, 2015
Public Housing Capital Fund Trusts [Abstract]
Investments in Debt and Equity Investments, Cash and Cash Equivalents, Unrealized and Realized Gains (Losses), Public Housing Capital Funds Trust [Text Block]	Public Housing Capital (“PHC”) Fund Trust Certificates
	The Company owns 100% of the Residual Participation Receipts (“LIFERs”) in three tender option bond trusts (“PHC TOB Trusts”). At March 31, 2015, the PHC TOB Trusts own approximately $59.3 million of Public Housing Capital Fund Certificates (“PHC Certificates”) issued by three trusts (“PHC Trusts”) sponsored by Deutsche Bank (“DB”). The assets held by the PHC Trusts consist of custodial receipts evidencing loans made to a number of local public housing authorities. Principal and interest on these loans are payable by the respective public housing authorities out of annual appropriations to be made to the public housing authorities by the United States Department of Housing and Urban Development (“HUD”) under HUD’s Capital Fund Program established under the Quality Housing and Work Responsibility Act of 1998 (the “Capital Fund Program”). The PHC Trusts have a first lien on these annual Capital Fund Program payments to secure the public housing authorities’ respective obligations to pay principal and interest on their loans. The loans payable by the public housing authorities are not debts of, or guaranteed by, the United States of America or HUD. Interest payable on the public housing authority debt held by the PHC Trusts is exempt from federal income taxes. The PHC Certificates issued by each of the PHC Trusts have been rated investment grade by Standard & Poor’s.
	The Company determined that the three PHC TOB trusts are VIEs and that the Company was the primary beneficiary of each of the three PHC TOB trusts. As a result, the Company reports the PHC TOB Trusts on a consolidated basis and the SPEARS as debt financing. In determining the primary beneficiary of these specific VIEs, the Company considered who has the power to control the activities of the VIEs which most significantly impact their financial performance, the risks that the entity was designed to create, and how each risk affects the VIE. The indenture for the PHC TOB trusts stipulates that the Company has the sole right to cause the PHC TOB trusts to sell the PHC Certificates. If they were sold, the extent to which the VIEs will be exposed to gains or losses would result from decisions made by the Company.
	The Company had the following investments in the PHC Certificates on March 31, 2015 and December 31, 2014:
	Description of Public Housing Capital Fund Trust Certificates	Cost adjusted for amortization of premium and discounts			Unrealized Gain			Unrealized Loss			Estimated Fair Value at March 31, 2015
	Public Housing Capital Fund Trust I	$	27,379,187		$	484,160		$	—		$	27,863,347
	Public Housing Capital Fund Trust II	12,011,169			—			(40,868		)	11,970,301
	Public Housing Capital Fund Trust III	20,483,912			—			(44,619		)	20,439,293
		$	59,874,268		$	484,160		$	(85,487	)	$	60,272,941
	Description of Public Housing Capital Fund Trust Certificates	Cost adjusted for amortization of premium and discounts			Unrealized Gain			Unrealized Loss			Estimated Fair Value at December 31, 2014
	Public Housing Capital Fund Trust Certificate I	$	27,414,100		$	933,789		$	—		$	28,347,889
	Public Housing Capital Fund Trust Certificate II	11,999,721			152,293			—			12,152,014
	Public Housing Capital Fund Trust Certificate III	20,474,100			289,120			—			20,763,220
		$	59,887,921		$	1,375,202		$	—		$	61,263,123
	Valuation - As all of the Company’s investments in PHC Certificates are classified as available-for-sale securities, they are carried on the balance sheet at their estimated fair values. As of March 31, 2015, the weighted average base rate of the PHC Trust Certificates was approximately 5.0% per annum.  Due to the limited market for the PHC Certificates, these estimates of fair value do not necessarily represent what the Company would actually receive in a sale of the PHC Certificates.  The estimates of the fair values of these PHC certificates is based on a yield to maturity analysis which begins with the current market yield rate for a “AAA” rated tax-free municipal bond for a term consistent with the weighted-average life of each of the Public Housing Capital Fund trusts adjusted largely for unobservable inputs the General Partner believes would be used by market participants. Management’s fair value estimates encompass judgment. Management’s estimates are compared to external pricing services when available.
	At March 31, 2015 and December 31, 2014 the range of effective yields on the PHC Certificates were 4.2% to 5.4% per annum.  Additionally, the Company calculated the sensitivity of the key assumption used in calculating the fair values of these PHC Certificates.  Assuming a 10% adverse change in the key assumption, the effective yields on the PHC Certificates would increase to a range of 4.9% to 6.3% per annum and would result in additional unrealized losses on the PHC Certificates of approximately $2.3 million.  This sensitivity analysis is hypothetical and is as of a specific point in time.  The results of the sensitivity analysis may not be indicative of actual changes in fair value and should be used with caution.  If available, the general partner may also consider other information from external sources, such as pricing services.  Pricing services and management’s analysis provide indicative pricing only.
	The following table sets forth certain information relating to the PHC Certificates held in the PHC TOB Trusts on March 31, 2015 and December 31, 2014:
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life		Principal Outstanding March 31, 2015
	Public Housing Capital Fund Trust Certificate I	10		AA-	5.3	%	$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.47		A+	4.28	%	12,429,186
	Public Housing Capital Fund Trust Certificate III	10.56		BBB	5.42	%	20,898,432
	Total Public Housing Capital Fund Trust Certificates						$	59,308,398
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life		Principal Outstanding December 31, 2014
	Public Housing Capital Fund Trust Certificate I	10.25		AA-	5.33	%	$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.72		A+	4.28	%	12,429,186
	Public Housing Capital Fund Trust Certificate III	10.81		BBB	5.42	%	20,898,432
	Total Public Housing Capital Fund Trust Certificates						$	59,308,398

MortgageBacked_Securities

Mortgage-Backed Securities	3 Months Ended
	Mar. 31, 2015
Mortgage-Backed Securities [Abstract]
Investments in Debt and Equity Investments, Cash and Cash Equivalents, Unrealized and Realized Gains (Losses), Mortgage Backed Securities [Text Block]	Mortgage-Backed Securities (“MBS”)
	At March 31, 2015, the Company held three securitizations of mortgage-backed securities (“MBS TOB Trusts”). The Company owns the LIFERS issued by the three MBS TOB Trusts which were purchased for approximately $2.8 million.
	Each of the three MBS TOB Trusts issued SPEARS to unaffiliated investors. These SPEARS totaled approximately $11.9 million at March 31, 2015. The SPEARS represent senior interests in the MBS TOB Trusts and have been credit enhanced by DB. The LIFERS entitle the Company to all principal and interest payments received by the MBS TOB Trust on the securitized MBS after payments due to the holders of the SPEARs and trust costs. The SPEARS bear interest at a variable rate based on Securities Industry and Financial Markets Association (“SIFMA”) index.
	The Company determined that the three MBS TOB Trusts are VIEs and that the Company was the primary beneficiary of each of them. As a result, the Company reports the MBS TOB Trusts on a consolidated basis and the SPEARS as debt financing. In determining the primary beneficiary of these specific VIEs, the Company considered who has the power to control the activities of the VIEs which most significantly impact their financial performance, the risks that the entity was designed to create, and how each risk affects the VIE. The indenture for the MBS TOB Trusts stipulates that the Company has the sole right to cause the MBS TOB Trusts to sell the MBS. If they were sold, the extent to which the MBS TOB Trusts will be exposed to gains or losses would result from decisions made by the Company.
	The carrying value of the Company’s MBS as of March 31, 2015 and December 31, 2014 as follows:
	Agency Rating of MBS (1)	Cost adjusted for amortization of premium		Unrealized Gain				Unrealized Loss			Estimated Fair Value at March 31, 2015
	“AAA”	$	5,300,637	$	—			$	(251,537	)	$	5,049,100
	“AA”	10,059,739		—				(224,500		)	9,835,239
		$	15,360,376	$	—			$	(476,037	)	$	14,884,339
	(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.
	Agency Rating of MBS (1)	Cost adjusted for amortization of premium		Unrealized Gain				Unrealized Loss			Estimated Fair Value at December 31, 2014
	“AAA”	$	5,304,974	$	—			$	(250,624	)	$	5,054,350
	“AA”	10,062,667		—				(275,459		)	9,787,208
		$	15,367,641	$	—			$	(526,083	)	$	14,841,558
	(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.
	Valuation - The Company values each MBS based upon prices obtained from a third party pricing service, which are indicative of market activity. The valuation methodology of the Company’s third party pricing service incorporates commonly used market pricing methods, incorporates trading activity observed in the market place, and other data inputs. The methodology also considers the underlying characteristics of each security, which are also observable inputs, including: coupon; maturity date; loan age; reset date; collateral type; geography; and prepayment speeds. Management analyzes pricing data received from the third party pricing service by comparing it to valuation information obtained from at least one other third party pricing service and ensuring they are within a tolerable range of difference which the Company estimates as 7.5%. Management also looks at observations of trading activity observed in the market place when available. At March 31, 2015, the range of effective yields on the individual MBS was 3.6% to 5.2% per annum. At December 31, 2014, the range of effective yields on the individual MBS was 3.7% to 5.2% per annum. Additionally, the Company calculated the sensitivity of the key assumption used in calculating the fair values of the MBS which is the effective yield on new issuances of similarly rated MBS.  Assuming a 10% adverse change in that key assumption, the effective yields on the MBS would increase to a range of 4.0% to 5.8% per annum and would result in additional unrealized losses on the bond portfolio of approximately $801,000.  This sensitivity analysis is hypothetical and is as of a specific point in time.  The results of the sensitivity analysis may not be indicative of actual changes in fair value and should be used with caution.  Pricing services and management’s analysis provide indicative pricing only. The MBS have been in an unrealized loss position for more than twelve months and the Company does not believe the investment is other than temporarily impaired as of March 31, 2015 as it has the intent and ability to hold these investments until their estimated fair value recovers to the carrying cost or until final maturity.
	The MBS are backed by residential mortgage loans and interest payable from the MBS is believed and expected to be exempt from federal income taxation. Description of certain terms of the Company’s MBS is as follows:
	Agency Rating of MBS	Principal Outstanding March 31, 2015		Weighted Average Maturity Date		Weighted Average Coupon Interest Rate
	“AAA”	$	5,000,000	July 1, 2032		4.6	%
	“AA”	9,765,000		July 9, 2036		4.2	%
		$	14,765,000

Real_Estate_Assets

Real Estate Assets	3 Months Ended
	Mar. 31, 2015
Real Estate Assets [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	Real Estate Assets
	MF Properties
	To facilitate its investment strategy of acquiring additional mortgage revenue bonds secured by MF Properties, the Company has acquired through its various subsidiaries 99% limited partner positions in two limited partnerships and 100% member positions in six limited liability companies that own the MF Properties. The financial statements of these properties are consolidated with those of the Company.  The general partners of these partnerships are unaffiliated parties and their 1% ownership interest in these limited partnerships is reflected in the Company’s condensed consolidated financial statements as noncontrolling interests.
	Recent Transactions
	On March 30, 2015, a commercial purchase agreement was executed for The Colonial, an MF Property, which is expected to be completed before the end of the second quarter of 2015. The projected proceeds from the sale of the property are expected to be approximately $10.7 million, which is greater than the total assets value of approximately $7.3 million. The Colonial property’s material financial statement components are reported in the condensed consolidated financial statements as follows:
	Financial Statement Descriptions	Amount
	Material Balance Sheet Components
	Net real estate assets	$	7,126,604
	Mortgage payable	$	7,476,799
	Material Statement of Operations Components
	Property revenues	$	449,100
	Real estate operating expenses	$	256,988
	Depreciation and amortization expenses	$	214,519
	Net loss	$	(98,156	)
	The Company had the following investments in MF Properties as of March 31, 2015 and December 31, 2014:
	MF Properties
	Property Name	Location		Number of Units	Land and Land Improvements		Buildings and		Carrying Value at March 31, 2015
							Improvements
	Arboretum	Omaha, NE		145	$	1,748,502	$	19,228,701	$	20,977,203
	Eagle Village	Evansville, IN		511	567,880		12,479,357		13,047,237
	Glynn Place	Brunswick, GA		128	743,996		4,945,091		5,689,087
	Meadowview	Highland Heights, KY		230	688,539		5,482,068		6,170,607
	Residences of DeCordova	Granbury, TX		110	1,137,832		8,015,812		9,153,644
	Residences of Weatherford	Weatherford, TX		76	1,942,229		5,728,977		7,671,206
	The 50/50	Lincoln, NE		475	—		32,820,776		32,820,776
	The Colonial	Omaha, NE		258	1,180,058		7,855,899		9,035,957
	Woodland Park	Topeka, KS		236	1,265,160		14,186,285		15,451,445
									120,017,162
	Less accumulated depreciation (depreciation expense of approximately $1.5 million in 2015)								(15,513,016		)
	Balance at March 31, 2015								$	104,504,146
	MF Properties
	Property Name	Location		Number of Units	Land and Land Improvements		Buildings and		Carrying Value at December 31, 2014
							Improvements
	Arboretum	Omaha, NE		145	$	1,748,502	$	19,216,623	$	20,965,125
	Eagle Village	Evansville, IN		511	567,880		12,472,151		13,040,031
	Glynn Place	Brunswick, GA		128	743,996		4,995,658		5,739,654
	Meadowview	Highland Heights, KY		224	688,539		5,479,342		6,167,881
	Residences of DeCordova	Granbury, TX		110	1,137,832		8,007,390		9,145,222
	Residences of Weatherford	Weatherford, TX		76	1,942,229		5,724,456		7,666,685
	The 50/50	Lincoln, NE		475	—		32,820,776		32,820,776
	The Colonial	Omaha, NE		258	1,180,058		7,822,681		9,002,739
	Woodland Park	Topeka, KS		236	1,265,160		14,167,096		15,432,256
									119,980,369
	Less accumulated depreciation (depreciation expense of approximately $4.8 million in 2014)								(14,108,154		)
	Balance at December 31, 2014								$	105,872,215
	Consolidated VIE Properties
	In addition to the MF Properties, the Company consolidates the assets, liabilities and results of operations of the Consolidated VIEs in accordance with the accounting guidance on consolidations.  Although the assets of these VIEs are consolidated, the Company has no ownership interest in the VIEs other than to the extent they serve as collateral for the mortgage revenue bonds owned by the Partnership.  The results of operations of those properties are recorded by the Company in consolidation and are included in “Unallocated loss of Consolidated Property VIEs”. No net income or loss from these properties accrue to the unitholders or the general partner.
	The Company consolidated the following properties owned by Consolidated VIEs in continuing operations as of March 31, 2015 and December 31, 2014:
	Consolidated VIEs
	Property Name	Location		Number of Units	Land and Improvements		Buildings and Improvements		Carrying Value at March 31, 2015
	Bent Tree Apartments	Columbia, SC		232	$	986,000	$	12,348,139	$	13,334,139
	Fairmont Oaks Apartments	Gainesville, FL		178	850,400		8,909,337		9,759,737
									23,093,876
	Less accumulated depreciation (depreciation expense of approximately $239,000 in 2015)								(10,814,129		)
	Balance at March 31, 2015								$	12,279,747
	Consolidated VIEs
	Property Name	Location		Number of Units	Land and Improvements		Buildings and Improvements		Carrying Value at December 31, 2014
	Bent Tree Apartments	Columbia, SC		232	$	986,000	$	12,303,982	$	13,289,982
	Fairmont Oaks Apartments	Gainesville, FL		178	850,400		8,900,066		9,750,466
									23,040,448
	Less accumulated depreciation (depreciation expense of approximately $940,000 in 2014)								(10,583,646		)
	Balance at December 31, 2014								$	12,456,802
	Land Held for Investment and Development
	At March 31, 2015, the Company reported approximately $4.5 million as land held for investment. The Company plans to develop this land into rental properties.

Other_Assets

Other Assets	3 Months Ended
	Mar. 31, 2015
Other Assets [Abstract]
Other Assets Disclosure [Text Block]	Other Assets
	The Company had the following Other Assets as of dates shown:
		March 31, 2015			December 31, 2014
	Property loans receivable	$	22,230,852		$	22,191,515
	Less: Loan loss reserves	(7,098,814		)	(7,098,814		)
	Deferred financing costs - net	4,535,783			4,659,104
	Fair value of derivative contracts	523,151			267,669
	Taxable bonds at fair value	4,411,214			4,616,565
	Bond purchase commitments - fair value adjustment (Notes 4 & 14)	5,204,188			5,780,413
	Other assets	757,847			885,075
	Total Other assets	$	30,564,221		$	31,301,527
	In addition to the mortgage revenue bonds held by the Company, property loans have been made to the owners of the properties which secure the mortgage revenue bonds and are reported as property loans receivable in Other assets, net of loan loss reserves.  The Company periodically, or as changes in circumstances or operations dictate, evaluates such property loans receivable for impairment.  The value of the underlying property assets is ultimately the most relevant measure of value to support the property loan values.  The Company utilizes a discounted cash flow model in estimating a property’s fair value.  Discounted cash flow models containing varying assumptions are considered.   The various models may assume multiple revenue and expense scenarios, various capitalization rates and multiple discount rates.  Other information, such as independent appraisals, may be considered in estimating a property’s fair value.  If the estimated fair value of the property after deducting the amortized cost basis of any senior mortgage revenue bond exceeds the principal balance of the property loan then no potential loss is indicated and no loan loss reserve for property loans is needed. In estimating the property valuation, the most significant assumptions utilized in the discounted cash flow model remain the same as discussed in the Form 10-K and include revenue and expense projections and capitalization rates.
	Please see the Fair Value Measurement footnote (Note 13) for the detailed description of the fair value estimation process for all taxable mortgage bonds.
	During the first quarter of 2015, the Partnership advanced additional funds to Cross Creek of approximately $57,500. In addition, the Partnership received approximately $18,000 of principal from FAH during the first quarter of 2015. During the first quarter of 2014, the Partnership advanced additional funds to Cross Creek and the Ohio Properties of approximately $42,000 and $29,000, respectively. During the first quarters of 2015 and 2014, the Partnership recorded an allowance on interest equal to the accrued interest on the Ashley Square, Cross Creek, Lake Forest and the Ohio Properties property loans receivable because the Partnership determined they were not reasonably assured.
	The following is a summary of the property loans receivable, accrued interest and loan loss reserves on the amounts due at March 31, 2015 and December 31, 2014, respectively:
		March 31, 2015
		Outstanding Balance			Accrued Interest			Loan Loss Reserves			Interest Allowance			Net Property Loans
	Arbors at Hickory Ridge	$	191,264		$	29,442		$	—		$	—		$	220,706
	Ashley Square	5,078,342			2,557,178			(3,596,342		)	(2,557,178		)	1,482,000
	Avistar (February 2013 portfolio)	274,496			25,199			—			—			299,695
	Avistar (June 2013 portfolio)	251,622			23,099			—			—			274,721
	Cross Creek	7,033,587			2,151,317			(3,447,472		)	(2,151,317		)	3,586,115
	Foundation for Affordable Housing	1,542,391			—			—			—			1,542,391
	Greens Property	850,000			258,376			—			—			1,108,376
	Lake Forest	4,618,704			2,716,910			(55,000		)	(2,696,076		)	4,584,538
	Ohio Properties	2,390,446			976,156			—			(340,093		)	3,026,509
		$	22,230,852		$	8,737,677		$	(7,098,814	)	$	(7,744,664	)	$	16,125,051
		December 31, 2014
		Outstanding Balance			Accrued Interest			Loan Loss Reserves			Interest Allowance			Net Property Loans
	Arbors at Hickory Ridge	$	191,264		$	26,047		$	—		$	—		$	217,311
	Ashley Square	5,078,342			2,455,660			(3,596,342		)	(2,455,660		)	1,482,000
	Avistar (February 2013 portfolio)	274,496			16,470			—			—			290,966
	Avistar (June 2013 portfolio)	251,622			15,097			—			—			266,719
	Cross Creek	6,976,087			2,084,804			(3,447,472		)	(2,084,804		)	3,528,615
	Foundation for Affordable Housing	1,560,553			1,735			—			—			1,562,288
	Greens Property	850,000			231,342			—			—			1,081,342
	Lake Forest	4,618,704			2,599,613			(55,000		)	(2,578,778		)	4,584,539
	Ohio Properties	2,390,447			894,044			—			(307,832		)	2,976,659
		$	22,191,515		$	8,324,812		$	(7,098,814	)	$	(7,427,074	)	$	15,990,439
	The following is a detail of loan loss reserves for the first quarter ended March 31, 2015 and year ended December 31, 2014:
		31-Mar-15			31-Dec-14
	Balance, beginning of year	$	7,098,814		$	7,023,814
	Provision for loan loss	—			75,000
	Balance, end of year	$	7,098,814		$	7,098,814
	Based on the annual impairment analysis, a provision for loan loss and an associated loan loss reserve of $75,000 was recorded against the Cross Creek property loan in 2014. There was no provision for loan loss or associated loan loss reserve during the first quarter of 2015.

Debt_Financing

Debt Financing	3 Months Ended
	Mar. 31, 2015
Debt Financing [Abstract]
Debt Disclosure [Text Block]	Debt Financing
	At March 31, 2015 and December 31, 2014, the Company reported outstanding debt financing of approximately $379.3 million and approximately $345.4 million, respectively, through the use of various credit facilities.
	Other Financings
	In March 2014, the Partnership obtained two $5.0 million unsecured revolving lines of credit (“LOC”). The first revolving LOC carries a variable interest rate which was approximately 3.5% on March 31, 2015, and matures in March 2016. The second revolving LOC also carries a variable interest rate which was approximately 3.4% on March 31, 2015 and matures in March 2016. On March 31, 2015, the Partnership borrowed $5.0 million on each of the LOCs.
	In addition, the Partnership has a $7.5 million promissory note which carries a fixed interest rate of approximately 2.8% per annum plus the 30-day London Interbank Offered Rate ("LIBOR") which was approximately 0.2% per annum at March 31, 2015, resulting in approximately 3.0% per annum. The maturity date is August 1, 2017. The Partnership had approximately $7.5 million borrowed as of March 31, 2015, with approximately $6.1 million related to the Woodland Park property and is reported as part of Mortgage payables (Note 10) and approximately $1.4 million reported in Debt financing on the Balance Sheet at March 31, 2015.
	The LOCs and $1.4 million borrowing was utilized to supplement with short-term working capital needs and to fund new investments during the periods of time that the Company is working with its lender to finalize new TOB and TEBS financings of assets.
	Tender Option Bond Financings
		31-Mar-15
	Description of the Tender Option Bond Financings	Outstanding Debt Financing		Interest Rate		Stated Maturity
	PHC Certificates-TOB Trust	$	44,675,000	2.2	%	Jun-15
	MBS - TOB Trust 1	2,585,000		1.1	%	Apr-15
	MBS - TOB Trust 2	4,090,000		1.1	%	Apr-15
	MBS - TOB Trust 5	5,270,000		1.08	%	Apr-15
	The Suites on Paseo - TOB Trust	15,000,000		4.05	%	Nov-15
	TOB - Decatur Angle - TOB Trust	21,850,000		4.34	%	Oct-16
	Live 929 - TOB Trust	34,960,000		4.47	%	Jul-19
	Bruton Apartments - TOB Trust	17,250,000		4.55	%	Jul-17
	Pro Nova 2014-1 - TOB Trust	9,010,000		4.05	%	Jul-17
	Pro Nova 2014-2 - TOB Trust	9,010,000		4.05	%	Jul-17
	Concord at Gulfgate - TOB Trust	11,940,000		2.8	%	Feb-18
	Concord at Little York - TOB Trust	8,735,000		2.8	%	Feb-18
	Concord at Williamcrest - TOB Trust	12,610,000		2.8	%	Feb-18
	Total Debt Financing	$	196,985,000
		31-Dec-14
	Description of the Tender Option Bond Financings	Outstanding Debt Financing		Interest Rate		Stated Maturity
	PHC Certificates-TOB Trust	$	44,675,000	2.2	%	Jun-15
	MBS - TOB Trust 1	2,585,000		1.12	%	Apr-15
	MBS - TOB Trust 2	4,090,000		1.12	%	Apr-15
	MBS - TOB Trust 5	5,270,000		1.06	%	Apr-15
	The Suites on Paseo - TOB Trust	25,535,000		1.96	%	Jun-15
	TOB - Decatur Angle - TOB Trust	21,850,000		4.34	%	Oct-16
	Live 929 - TOB Trust	34,975,000		4.47	%	Jul-19
	Bruton Apartments - TOB Trust	17,250,000		4.55	%	Jul-17
	Pro Nova 2014-1 - TOB Trust	9,010,000		4.05	%	Jul-17
	Pro Nova 2014-2 - TOB Trust	9,010,000		4.05	%	Jul-17
	Total Debt Financing	$	174,250,000
	In July 2011, the Company executed a Master Trust Agreement with DB which allows the Company to execute multiple TOB Trust structures upon the approval and agreement of terms by DB. Under each TOB Trust structure issued through the Master Trust Agreement, the TOB trustee issues SPEARS and LIFERS. These SPEARS and LIFERS represent beneficial interests in the securitized asset held by the TOB trustee. The Company will purchase the LIFERS from each of these TOB Trusts which will grant them certain rights to the securitized assets. The Master Trust Agreement with DB has covenants with which the Company is required to comply. At March 31, 2015, the most restrictive covenant was that cash available to distribute for the trailing twelve months must be at least two times trailing twelve month interest expense. The Company was in compliance with all covenants as of March 31, 2015. If the Company were to be out of compliance with any of these covenants, it would trigger a termination event of the financing facilities. The Company expects to renew each of the TOB financing facilities at its discretion per the terms of the agreements. DB can require the posting of cash collateral under the terms of the Master Trust Agreement.
	In March 2015, the Partnership executed a new TOB Trust under its credit facility with DB securitizing the Suites on Paseo mortgage revenue bond borrowing $15.0 million. The new TOB Trust facility will mature in November 2015. On the closing date the total fixed TOB Trust facility interest rate was approximately 4.1% per annum. Pursuant to the terms of this TOB Trust the Partnership is required to reimburse DB for any shortfall realized on the contractual cash flows on the SPEARS. This new TOB Trust replaced the December 2013 TOB Trust under its credit facility with DB which had securitized the Suites on Paseo mortgage revenue bond borrowing $25.8 million. The outstanding balance is approximately $15.0 million on March 31, 2015.
	In February 2015, the Partnership executed three new TOB Trusts under its credit facility with DB securitizing the Concord at Gulfgate Apartments, Concord at Little York Apartments, and Concord at Williamcrest Apartments 2015A mortgage revenue bonds borrowing approximately $33.3 million under three TOB Trusts. Each TOB Trust facility has an approximate 2.8% per annum fixed interest rate and each will mature on February 2018. Pursuant to the terms of this TOB Trust the Partnership is required to reimburse DB for any shortfall realized on the contractual cash flows on the SPEARS. The outstanding balance remains at approximately $33.3 million on March 31, 2015.
	As of March 31, 2015, the Company has posted approximately $1.1 million of cash collateral in connection with the MBS TOB Trusts. This collateral is recorded as restricted cash in the condensed consolidated financial statements.
	The Company owns the PHC Certificate LIFERS issued by the PHC TOB Trusts and pledged the LIFERS to the trustee to secure certain reimbursement obligations of the Company as the holder of LIFERS. The Company is consolidating the PHC TOB Trust as it has determined it is the primary beneficiary of these variable interest entities. The PHC TOB Trusts issued SPEARS to unaffiliated investors. The SPEARS represent senior interests in the PHC TOB Trusts and have been credit enhanced by DB. The LIFERS entitle the Company to all principal and interest payments received by the PHC TOB Trusts. The amount owed to the SPEARS owners is approximately $44.7 million at March 31, 2015. As of March 31, 2015 and December 31, 2014, the Company posted approximately $400,000 of cash collateral in connection with one of the PHC TOB Trusts which is recorded as restricted cash.
	The Company is accounting for these TOB Trust financing transactions as secured financing arrangements. As of March 31, 2015, the total cost of borrowing averaged approximately 2.2% and 1.1%, on the PHC TOB Trusts and MBS TOB Trusts, respectively.
	TEBS Financings
	On July 10, 2014, the Partnership and its newly created consolidated subsidiary, ATAX TEBS II, LLC (“2014 Sponsor”), entered into a number of agreements relating to a new long-term debt financing facility provided through the securitization of thirteen mortgage revenue bonds, with a par value of approximately $118.4 million, owned by the the 2014 Sponsor pursuant to the M31 TEBS financing. The M31 TEBS financing facility essentially provides the Partnership with a long-term variable-rate debt facility at interest rates reflecting prevailing short-term tax-exempt rates.
	Effective July 1, 2014, the Partnership transferred the following mortgage revenue bonds to the 2014 Sponsor pursuant to the M31 TEBS financing. The par value of the mortgage revenue bonds included in this financing facility as of March 31, 2015 and December 31, 2014 are as follows:
	Description of Mortgage Revenue Bonds	Outstanding Bond Par Amounts
		31-Mar-15		31-Dec-14			Financial Statement Presentation
	Arbors at Hickory Ridge	$	11,450,000	$	11,450,000		Mortgage revenue bond
	Avistar at Chase Hill A Bond	10,000,000		10,000,000			Mortgage revenue bond
	Avistar at the Crest A Bond	9,700,000		9,700,000			Mortgage revenue bond
	Avistar at the Oaks A Bond	7,800,000		7,800,000			Mortgage revenue bond
	Avistar in 09 A Bond	6,735,000		6,735,000			Mortgage revenue bond
	Avistar on the Boulevard A Bond	16,525,000		16,525,000			Mortgage revenue bond
	Avistar on the Hills A Bond	5,389,000		5,389,000			Mortgage revenue bond
	Copper Gate Apartments	5,220,000		5,220,000			Mortgage revenue bond
	Greens Property A Bond	8,348,000		8,366,000			Mortgage revenue bond
	Harden Ranch A Bond	6,960,000		6,960,000			Mortgage revenue bond
	The Palms at Premier Park Apartments	20,125,232		20,152,000			Mortgage revenue bond
	Tyler Park Apartments A Bond	6,075,000		6,075,000			Mortgage revenue bond
	Westside Village A Bond	3,970,000		3,970,000			Mortgage revenue bond
	Total	$	118,297,232	$	118,342,000
	The mortgage revenue bonds were then securitized by transferring these assets to Freddie Mac in exchange for Class A and Class B Freddie Mac Multifamily Variable Rate Certificates, (collectively, the “M31 TEBS Certificates”). The M31 TEBS Certificates represent beneficial interests in the securitized assets held by Freddie Mac. The Class A TEBS Certificates were issued in an initial principal amount of approximately $94.7 million and were sold through a placement agent to unaffiliated investors. The Class B M31 TEBS Certificates were issued in an initial principal amount of approximately $23.7 million and were retained by the 2014 Sponsor. The gross proceeds from the M31 TEBS financing were approximately $94.7 million. After the payment of transaction expenses, the Partnership received net proceeds from the M31 TEBS financing of approximately $91.6 million. The Partnership applied approximately $72.4 million of these net proceeds to retire the short-term securitization that previously existed on these bonds and approximately $6.3 million to a stabilization escrow. In the first quarter of 2015, $1.9 million of restricted cash on the Avistar at Chase Hill bond was released to the Partnership. Approximately $4.4 million is reported as restricted cash on the March 31, 2015 balance sheet.
	The holders of the Class A M31 TEBS Certificates are entitled to receive regular payments of interest from Freddie Mac at a variable rate which resets periodically based on the weekly SIFMA floating index rate plus certain credit, facility, remarketing, and servicing fees (“Facility Fees”). In order to mitigate its exposure to interest rate fluctuations on the variable rate M31 TEBS financing, the 2014 Sponsor also entered into interest rate cap agreements with Barclays Bank PLC, the Royal Bank of Canada, and Sumitomo Mitsui Banking Corporation, each in an initial notional amount of approximately $31.6 million, which effectively limits the interest payable by the 2014 Sponsor on the Class A M31 TEBS Certificates to a fixed rate of 3.0% per annum on the combined notional amounts of the interest rate cap agreements through August 15, 2019.
	The total Facility Fees are 1.4% per annum, and as of March 31, 2015, the SIFMA rate was equal to approximately 0.0% per annum resulting in a total cost of borrowing of approximately 1.4% per annum on the outstanding balance of the M31 TEBS financing facility of approximately $94.6 million. The M31 TEBS financing and the associated M31 TEBS Trust are presented as secured financings within the condensed consolidated financial statements.
Payment of interest on the Class A M31 TEBS Certificates will be made from the interest payments received by Freddie Mac from the Bonds held by Freddie Mac on designated interest payment dates prior to any payments of interest on the Class B M31 TEBS Certificates held by the 2014 Sponsor. As the holder of the Class B M31 TEBS Certificates, the 2014 Sponsor is not entitled to receive interest payments on the Class B TEBS Certificates at any particular rate, but will be entitled to all payments of principal and interest on the Bonds held by Freddie Mac after payment of principal and interest due on the Class A M31 TEBS Certificates and payment of all Facility Fees and associated expenses. Accordingly, the amount of interest paid to the 2014 Sponsor on the Class B M31 TEBS Certificates is expected to vary over time, and could be eliminated altogether, due to fluctuations in the interest rate payable on the Class A M31 TEBS Certificates, Facility Fees, expenses, and other factors.
Freddie Mac guaranteed payment of scheduled principal and interest payments on the Class A M31 TEBS Certificates and also guaranteed payment of the purchase price of any Class A M31 TEBS Certificates that are tendered to Freddie Mac in accordance with their terms which cannot be remarketed to new holders within five business days.  The 2014 Sponsor is obligated to reimburse Freddie Mac for certain expenses, including any payments made by Freddie Mac under its guaranty. These obligations of the 2014 Sponsor are also guaranteed by the Partnership.  The Partnership also entered into various subordination agreements with Freddie Mac under which the Partnership has subordinated its rights and remedies with respect to the mortgage revenue and taxable bonds and mortgage loans made by it to the owners of properties securing certain of the Bonds to the rights of Freddie Mac as the holder of the Bonds.
The term of the M31 TEBS financing coincides with the terms of the assets securing the M31 TEBS Certificates, except the 2014 Sponsor may elect to purchase all (but not less than all) of the Bonds from Freddie Mac on either July 15, 2019 or July 15, 2024.  The 2014 Sponsor also retains a right to require a Bond to be released from Freddie Mac in the event of a payment default on the Bond which remains uncured for two consecutive scheduled payment dates or 60 days, whichever is shorter, by paying Freddie Mac the unpaid principal and accrued interest on the Bond plus a yield maintenance payment.  In addition, the 2014 Sponsor has a limited right to substitute new bonds for existing Bonds held by Freddie Mac in certain circumstances. Should the Partnership not elect to terminate the TEBS Financing on these dates the full term of the M31 TEBS Financing runs through the final principal payment date associated with the securitized bonds, or August 1, 2050.
As of September 1, 2010, the Partnership and its Consolidated Subsidiary ATAX TEBS I, LLC, entered into a number of agreements relating to a new long-term debt financing facility provided through the securitization of thirteen mortgage revenue bonds owned by the ATAX TEBS I, LLC (“2010 Sponsor”) pursuant to the M24 TEBS financing. The M24 TEBS financing essentially provides the Partnership with a long-term variable-rate debt facility at interest rates reflecting prevailing short-term tax-exempt rates.
In February 2014, the mortgage revenue bond secured by Lost Creek was redeemed for an amount greater than the outstanding principal and accrued base interest. The Company received approximately $18.7 million for the Lost Creek mortgage revenue bond which was used to retire a portion of the M24 TEBS Financing facility. At March 31, 2015 there are twelve mortgage revenue bond owned by the 2010 Sponsor.
In September 2010 the Partnership entered into the M24 TEBs financing transferring certain mortgage revenue bonds to ATAX TEBS I, LLC, a special purpose entity. The par value of the mortgage revenue bonds included in this financing facility as of March 31, 2015 and December 31, 2014 are as follows:
Description of Mortgage Revenue Bonds	Outstanding Bond Par Amounts
	March 31, 2015		December 31, 2014			Financial Statement Presentation
Ashley Square	$	5,144,000	$	5,159,000		Mortgage revenue bond
Bella Vista	6,490,000		6,490,000			Mortgage revenue bond
Bent Tree	7,444,000		7,465,000			Consolidated VIE
Bridle Ridge	7,625,000		7,655,000			Mortgage revenue bond
Brookstone	9,234,633		9,256,001			Mortgage revenue bond
Cross Creek	8,403,534		8,422,997			Mortgage revenue bond
Fairmont Oaks	7,242,000		7,266,000			Consolidated VIE
Lake Forest	8,856,000		8,886,000			Mortgage revenue bond
Runnymede	10,440,000		10,440,000			Mortgage revenue bond
Southpark	13,680,000		13,680,000			Mortgage revenue bond
Woodlynn Village	4,390,000		4,390,000			Mortgage revenue bond
Ohio Series A Bond (1)	14,383,000		14,407,000			Mortgage revenue bond
Total	$	103,332,167	$	103,516,998
(1) Collateralized by Crescent Village, Postwoods, and Willow Bend (Note 2 and Note 9)
The securitization of these assets occurred through two classes of certificates. The Class A TEBS Certificates were issued in an initial principal amount of $95.8 million and were sold through a placement agent to unaffiliated investors. The Class B TEBS Certificates were issued in an initial principal amount of $20.3 million and were retained by the 2010 Sponsor. The holders of the Class A TEBS Certificates are entitled to receive regular payments of interest from Freddie Mac at a variable rate which resets periodically based on the weekly SIFMA floating index rate plus the Facility Fees.
The total Facility Fees are 1.9% per annum, and as of March 31, 2015, the SIFMA rate was equal to approximately 0.1% per annum resulting in a total cost of borrowing of approximately 2.0% per annum on the outstanding balance of the M24 TEBS financing facility of $76.3 million. The M24 TEBS financing and the associated TEBS Trust are presented as secured financings within the condensed consolidated financial statements.
The term of the M24 TEBS financing coincides with the terms of the assets securing the TEBS Certificates, except that the Partnership may terminate the M24 TEBS financing at its option on either September 15, 2017 or September 15, 2020. If the Partnership does not elect to terminate the M24 TEBS financing on these dates, the full term of the M24 TEBS financing runs through the final principal payment date associated with the securitized mortgage revenue bonds, or July 15, 2050.
The Company’s aggregate borrowings as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
2015	$	84,172,098
2016	24,872,528
2017	143,627,104
2018	1,217,740
2019	125,418,023
Thereafter	—
Total	$	379,307,493
MBS TOB Trust 6 and the majority of MBS TOB Trust 5 were collapsed in October 2014. The Company expects to renew each TOB financing facility maturing in 2015 for another six month term as it has the discretion to renew for six month periods per the terms of the agreement with DB.

Mortgages_Payable

Mortgages Payable	3 Months Ended
	Mar. 31, 2015
Mortgages Payable [Abstract]
Mortgage Notes Payable Disclosure [Text Block]	Mortgages Payable
	The Company reports the mortgage loans secured by certain MF Properties on its condensed consolidated financial statements as Mortgages payable.  As of March 31, 2015 and December 31, 2014, the outstanding mortgage loans totaled approximately $76.4 million and $76.7 million, respectively.  These mortgages carry interest rates ranging from 2.9% to 4.8% with maturity dates ranging from September 2015 to March 2020.
	In September 2013, the Partnership executed a $7.0 million promissory note related to the Woodland Park property. This promissory note carries a fixed interest rate of approximately 2.8% per annum plus 30-day LIBOR which was approximately 0.2% per annum, resulting in approximately 3.0% per annum at the date of closing. The maturity date was extended to August 1, 2017 and the maximum borrowing was changed to $7.5 million. The Partnership has borrowed approximately $7.5 million as of March 31, 2015. Approximately $6.1 million is related to the Woodland Park property and is reported as part of Mortgage payables and approximately $1.4 million is reported in Debt financing on the balance sheet at March 31, 2015 (Note 9).
	The Company’s mortgages payable as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
	2015	$	9,130,349
	2016	24,265,268
	2017	13,581,274
	2018	3,968,570
	2019	25,499,990
	Thereafter	—
	Total	$	76,445,451
	The Company plans to either extend or refinance the mortgage on Eagle Village as it matures in 2015.

Transactions_with_Related_Part

Transactions with Related Parties	3 Months Ended
	Mar. 31, 2015
Transactions with Related Parties [Abstract]
Related Party Transactions Disclosure [Text Block]	Transactions with Related Parties
	The general partner of the Partnership, AFCA 2, is entitled to receive an administrative fee from the Partnership equal to 0.45% per annum of the outstanding principal balance of any of its mortgage revenue bonds, property loans collateralized by real property, and other investments for which the owner of the financed property or other third party is not obligated to pay such administrative fee directly to AFCA 2. For the quarters ended March 31, 2015 and 2014 the Partnership paid or accrued administrative fees to AFCA 2 of approximately $620,000 and $473,000, respectively. In addition to the administrative fees paid directly by the Partnership, AFCA 2 receives administrative fees directly from the owners of properties financed by certain of the mortgage revenue bonds held by the Partnership.  These administrative fees also equal 0.45% per annum of the outstanding principal balance of these mortgage revenue bonds and totaled approximately $16,500 and $17,000 for the quarters ended March 31, 2015 and 2014, respectively.
	AFCA 2 earns mortgage placement fees in connection with the acquisition of certain mortgage revenue bonds.  These mortgage placement fees were paid by the owners of the respective properties and, accordingly, have not been reflected in the accompanying condensed consolidated financial statements because these properties are not considered consolidated VIEs.  During the quarters ended March 31, 2015 and 2014, AFCA 2 earned mortgage placement fees of approximately $534,000 and $323,000, respectively.
	An affiliate of AFCA 2, America First Properties Management Company, LLC (“Properties Management”) provided property management services for the nine MF Properties, the two Consolidated VIEs and six of the properties collateralized by the mortgage revenue bonds, earning management fees of approximately $324,000 and $300,000 for the quarters ended March 31, 2015 and 2014, respectively. These property management fees are not Partnership expenses, but are paid in each case by the owner of the Residential Properties.  For properties owned by entities treated as Consolidated VIEs and for MF Properties, the property management fees are reflected as real estate operating expenses on the Company’s condensed consolidated financial statements.  The property management fees are paid out of the revenues generated by the respective property prior to the payment of debt service on the Partnership's mortgage revenue bonds and property loans, if applicable.
	An affiliate of AFCA 2 acts as a origination advisor and consultant to the borrowers when mortgage revenue bonds and financing facilities are acquired by the Company. For the quarters ended March 31, 2015 and 2014, approximately $267,000 and $161,500, respectively, in origination fees were paid by the borrower of certain acquired bonds and have not been reflected in the accompanying condensed consolidated financial statements.
	The Partnership executed a Developer and Construction Management Agreement with two affiliates of AFCA 2 during the second quarter of 2013 in connection with the mixed-use development at the University of Nebraska - Lincoln, The 50/50 (Note 7). Under the terms of this agreement, these affiliates earned approximately $0 and $112,000 in the quarters ended March 31, 2015 and 2014, respectively.
	The owners of two limited-purpose corporations which own multifamily residential properties financed with mortgage revenue bonds and property loans held by the Company are employees of Burlington who are not involved in the operation or management of the Company and who are not executive officers or managers of Burlington.

Interest_Rate_Derivative_Agree

Interest Rate Derivative Agreements	3 Months Ended
	Mar. 31, 2015
Interest Rate Derivative Agreements [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Interest Rate Derivative Agreements
	As of March 31, 2015, the Company has nine derivative agreements in order to mitigate its exposure to increases in interest rates on its variable-rate debt financing.
	At March 31, 2015, the terms of the nine derivative agreements are as follows:
		Date Purchased	Notional Amount		Effective Capped Rate		Maturity Date	Purchase Price		Counterparty
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	921,000	Bank of New York Mellon
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	845,600	Barclays Bank PLC
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	928,000	Royal Bank of Canada
		August 15, 2013	$	93,305,000	1.5	%	September 1, 2017	$	793,000	Deutsche Bank
		February 18, 2014	$	41,250,000	1	%	March 1, 2017	$	230,500	SMBC Capital Markets, Inc
		February 18, 2014	$	11,000,000	1	%	March 1, 2017	$	150,500	SMBC Capital Markets, Inc
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	315,200	Barclays Bank PLC
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	343,000	Royal Bank of Canada
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	333,200	SMBC Capital Markets, Inc
	In February 2014, the Company entered into two interest rate cap agreements with SMBC Capital Markets, Inc. for a notional amount of $70.0 million with an effective start date of March 1, 2014. On March 30, 2015, SMBC Capital Markets, Inc revised and replaced this agreement with the notional amount for the outstanding borrowings on the MBS TOB financing facilities to $11.0 million. These agreements effectively limit the interest component of the TOB financing correlated with the SIFMA index to a maximum of 1.0% on $52.3 million of the outstanding borrowings on the MBS TOB financing facilities and the PHC Certificates TOB financing facilities through a three year term ending March 1, 2017. The Company received $10,500 of cash collateral upon the execution of this revised agreement. These interest rate cap contract revised cost approximately $369,500 and does not qualify for hedge accounting. Therefore, changes in the estimated fair value of the interest rate derivatives are included in earnings.
	The Company contracted for two no-cost interest rate swaps with DB related to the Decatur Angle and Bruton TOB financing facilities collateralized by mortgage revenue bonds that are used to provide financing for the construction of these properties. The swap related to the Decatur Angle TOB financing facility has a $23.0 million notional value, an October 15, 2016 effective date, and an October 15, 2021 termination date. The swap related to the Bruton TOB financing facility has an approximate $18.1 million notional value, an April 15, 2017 effective date, and an April 15, 2022 termination date. Both swaps are in place to mitigate the possible interest rate increases and swaps a variable rate based on LIBOR for an approximate 2% fixed rate. As of March 31, 2015 the fair value of the Decatur Angle swap is a liability of approximately $646,000 and the fair value of the Bruton swap is a liability of approximately $520,000. The fair value of these swaps have been recorded as a liability on the Balance Sheet.
	These interest rate derivatives do not qualify for hedge accounting and, accordingly, they are carried at fair value, with changes in fair value included in current period earnings within interest expense. The change in the fair value of these derivative contracts resulted in an increase in interest expense of approximately $900,000 and $176,000 for the quarters ended March 31, 2015 and 2014, respectively. The valuation methodology used to estimate the fair value of the Company’s interest rate derivative agreements is disclosed in footnote 13.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Fair Value Disclosures [Text Block]	Fair Value of Financial Instruments
	Current accounting guidance on fair value measurements establishes a framework for measuring fair value and provides for expanded disclosures about fair value measurements.  The guidance:
	•	Defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date; and
	•	Establishes a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date.
	Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk.  To increase consistency and comparability in fair value measurements and related disclosures, the fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels.  The three levels of the hierarchy are defined as follows:
	•	Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.
	•	Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.
	•	Level 3 inputs are unobservable inputs for asset or liabilities.
	The categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	Following is a description of the valuation methodologies used for assets and liabilities measured at fair value.
	Investments in Mortgage Revenue Bonds.  The fair values of the Company’s investments in mortgage revenue bonds have each been based on a discounted cash flow or yield to maturity analysis. The Company uses this same valuation methodology to estimate the fair value adjustment for its mortgage bond purchase commitments. There is no active trading market for the mortgage revenue bonds and price quotes for the mortgage revenue bonds are not available.  If available, the General Partner may also consider price quotes on similar mortgage revenue bonds or other information from external sources, such as pricing services.  The estimates of the fair values of these mortgage revenue bonds, whether estimated by the Company or based on external sources, are based largely on unobservable inputs the General Partner believes would be used by market participants.  Additionally, the calculation methodology used by the external sources and the Company encompasses the use of judgment in its application. To validate changes in the fair value of the Company’s investments in mortgage revenue bonds between reporting periods, the General Partner looks at the key inputs such as changes in the current market yields on similar bonds as well as changes in the operating performance of the underlying property serving as collateral for each bond. The General Partner validates that the changes in the estimated fair value of the mortgage revenue bonds move with the changes in these monitored factors. Given these facts the fair value measurement of the Company’s investment in mortgage revenue bonds is categorized as a Level 3 input. There is also an approximately $576,000 estimated fair market value adjustment related to forward bond purchase commitments that are categorized as a Level 3 input which were recorded in other comprehensive loss during the quarter ended March 31, 2015. The fair value of the bond purchase commitment is determined in the same manner as the mortgage revenue bonds.
	Investments in Public Housing Capital Fund Trust Certificates. The fair value of the Company’s investment in Public Housing Capital Fund Trust Certificates has been based on a yield to maturity analysis performed by the General Partner. There is no active trading market for the trusts’ certificates owned by the Company, but the General Partner will look at estimated values as determined by pricing services when available. The estimates of the fair values of these trusts’ certificates begin with the current market yield rate for a “AAA” rated tax-free municipal bond for a term consistent with the weighted-average life of each of the Public Housing Capital Fund trusts, adjusted largely for unobservable inputs the General Partner believes would be used by market participants. Additionally, the calculation methodology used by external pricing services and the Company encompasses the use of judgment in its application. The Company validates that the changes in the estimated fair value of Public Housing Capital Fund Trust Certificates move with the changes in the market yield rates of investment grade rated mortgage revenue municipal bonds with terms of similar length. Given these facts the fair value measurement of the Company’s investment in Public Housing Capital Fund Trust Certificates is categorized as a Level 3 input.
	Investments in Mortgage-Backed Securities. The fair value of the Company’s investment in mortgage-backed securities is based upon prices obtained from a third party pricing service, which are indicative of market activity. The valuation methodology of the Company’s third party pricing service incorporates commonly used market pricing methods, incorporates trading activity observed in the market place, and other data inputs. The methodology also considers the underlying characteristics of each security, which are also observable inputs, including: coupon; maturity date; loan age; reset date; collateral type; geography; and prepayment speeds. The Company analyzes pricing data received from the third party pricing service by comparing it to valuation information obtained from at least one other third party pricing service, ensuring they are within a tolerable range of difference which the Company estimates as 7.5%. The General Partner also looks at observations of trading activity in the market place when available. Given these facts, the fair value measurements of the Company’s investment in mortgage-backed securities are categorized as Level 2 inputs.
	Taxable Bonds. The fair values of the Company’s investments in taxable bonds have each been based on a discounted cash flow or yield to maturity analysis. There is no active trading market for the taxable bonds and price quotes are not available. The estimates of the fair values of these taxable bonds, whether estimated by the Company or based on external sources, are based largely on unobservable inputs the General Partner believes would be used by market participants.  Additionally, the calculation methodology used by the external sources and the Company encompasses the use of judgment in its application. To validate changes in the fair value of the Company’s investments in taxable bonds between reporting periods, management looks at the key inputs such as changes in the current market yields on similar bonds as well as changes in the operating performance of the underlying property serving as collateral for each bond. We validate that the changes in the estimated fair value of the taxable bonds move with the changes in these monitored factors. Given these facts the fair value measurement of the Company’s investment in taxable bonds is categorized as a Level 3 input.
	Interest Rate Derivatives.  The effect of the Company’s interest rate caps is to set a cap, or upper limit, on the base rate of interest paid on the Company’s variable rate debt equal to the notional amount of the derivative agreement.  The effect of the Company’s interest rate swap is to change a variable rate debt obligation to a fixed rate for that portion of the debt equal to the notional amount of the derivative agreement.  The interest rate derivatives are recorded at fair value with changes in fair value included in current period earnings within interest expense.  The fair value of the interest rate derivatives is based on a model whose inputs are not observable and therefore are categorized as a Level 3 input. The inputs in the valuation model include three-month LIBOR rates, unobservable adjustments to account for the SIFMA index, as well as any recent interest rate cap trades with similar terms.
	Assets and liabilities measured at fair value on a recurring basis are summarized below:
			Fair Value Measurements at March 31, 2015
	Description		Assets at Fair Value				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
	Assets
	Mortgage Revenue Bonds		$	507,898,698			$	—			$	—			$	507,898,698
	Bond Purchase Commitment		5,204,188				—				—				5,204,188
	Public Housing Capital Fund Trust Certificates		60,272,941				—				—				60,272,941
	Mortgage-Backed Securities		14,884,339				—				14,884,339				—
	Taxable Mortgage Bonds		4,411,214				—				—				4,411,214
	Interest Rate Derivatives		(642,704		)		—				—				(642,704		)
	Total Assets at Fair Value		$	592,028,676			$	—			$	14,884,339			$	577,144,337
			For Three Months Ended March 31, 2015
			Fair Value Measurements Using Significant
			Unobservable Inputs (Level 3)
			Mortgage Revenue Bonds				Bond Purchase Commitment				Public Housing Capital Fund Trust Certificates				Taxable Bonds			Interest Rate Derivatives			Total
	Beginning Balance January 1, 2015		$	449,024,137			$	5,780,413			$	61,263,123			$	4,616,565		$	267,669		$	520,951,907
	Total gains (losses) (realized/unrealized)
	Included in earnings		—				—				—				—			(899,873		)	(899,873		)
	Included in other comprehensive income (loss)		74,600				(576,225		)		(976,532		)		(205,351		)	—			(1,683,508		)
	Purchases		58,945,000				—				—				—			—			58,945,000
	Refund of interest rate derivative cost		—				—				—				—			(10,500		)	(10,500		)
	Settlements		(145,039		)		—				(13,650		)		—			—			(158,689		)
	Ending Balance March 31, 2015		$	507,898,698			$	5,204,188			$	60,272,941			$	4,411,214		$	(642,704	)	$	577,144,337
	Total amount of losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of March 31, 2015		$	—			$	—			$	—			$	—		$	(899,873	)	$	(899,873	)
			Fair Value Measurements at December 31, 2014
	Description		Assets at Fair Value				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
	Assets
	Mortgage Revenue Bonds		$	449,024,137			$	—			$	—			$	449,024,137
	Bond Purchase Commitment		5,780,413				—				—				5,780,413
	Public Housing Capital Fund Trusts		61,263,123				—				—				61,263,123
	Mortgage-Backed Securities		14,841,558				—				14,841,558				—
	Taxable Mortgage Bonds		4,616,565				—				—				4,616,565
	Interest Rate Derivatives		267,669				—				—				267,669
	Total Assets at Fair Value		$	535,793,465			$	—			$	14,841,558			$	520,951,907
			For Three Months Ended March 31, 2014
			Fair Value Measurements Using Significant
			Unobservable Inputs (Level 3)
			Mortgage Revenue Bonds				Public Housing Capital Fund Trust Certificates				Taxable Bonds				Interest Rate Derivatives			Total
	Beginning Balance January 1, 2014		$	285,318,171			$	62,056,379			$	4,075,953			$	888,120		$	352,338,623
	Total gains (losses) (realized/unrealized)
	Included in earnings		—				—				—				(175,837		)	(175,837		)
	Included in other comprehensive loss		14,073,020				1,657,859				223,004				—			15,953,883
	Purchases		34,778,800				—				—				—			34,778,800
	Purchase interest rate derivative		—				—				—				391,500			391,500
	Mortgage revenue bond redemption		(17,636,138		)		—				—				—			(17,636,138		)
	Settlements		(62,126		)		(1,643,698		)		—				—			(1,705,824		)
	Ending Balance March 31, 2014		$	316,471,727			$	62,070,540			$	4,298,957			$	1,103,783		$	383,945,007
	Total amount of losses for the period included in earning attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of March 31, 2014		$	—			$	—			$	—			$	(175,837	)	$	(175,837	)
	Gains and losses included in earnings for the period shown above are included in interest expense.
The Company calculates a fair value of each financial instrument using a discounted cash flow model based on the debt amortization schedules at the effective rate of interest for each period represented. This estimate of fair value is based on Level 3 inputs. The table below represents the fair value of the debt held on the balance sheet for March 31, 2015 and December 31, 2014, respectively.
	31-Mar-15								31-Dec-14
	Carrying Amount				Fair Value				Carrying Amount				Fair Value
Financial Liabilities:
Debt financing	$	379,307,493			$	380,751,539			$	345,359,000			$	346,813,909
Mortgages payable	$	76,445,451			$	75,876,463			$	76,707,845			$	76,134,465

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingencies
	The Company, from time to time, may be subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are frequently covered by insurance. If it has been determined that a loss is probable, the estimated amount of the loss is accrued in the condensed consolidated financial statements. While the resolution of these matters cannot be predicted with certainty, management believes the final outcome of such matters will not have a material effect on the Company’s condensed consolidated financial statements.
	As part of the Company’s strategy of acquiring mortgage revenue bonds, the Company will enter into forward bond purchase commitments related to mortgage revenue bonds to be issued secured by properties under construction. Upon execution of the forward bond purchase commitment, the proceeds from the mortgage revenue bonds issued will be used to pay off the construction related debt and mortgage revenue bonds. The Partnership accounts for the forward bond purchase agreements as an available-for-sale security and, as such, records the estimated value of the forward bond purchase commitment as an asset or liability with changes in such valuation recorded in other comprehensive income.
	As of March 31, 2015 and December 31, 2014 the forward bond purchase commitments outstanding and the related fair values are as follows:
	Forward Bond Purchase Commitments	Date	Commitment Amount		Rate		Fair Value at March 31, 2015		Fair Value at December 31, 2014
	15 West Apartments	Jul-14	$	9,900,000	6.25	%	$	744,660	$	809,178
	Plano at Gateway Apartments	Dec-14	$	20,000,000	6	%	$	1,005,800	$	1,133,400
	Silver Moon Apartments	Jun-13	$	8,000,000	6	%	$	366,320	$	413,600
	Vantage at Harlingen - B bonds	Aug-13	$	18,000,000	6	%	$	1,278,900	$	1,433,700
	Vantage at Judson - B bonds	Dec-12	$	26,700,000	6	%	$	1,808,508	$	1,990,535
	In December 2014, the Partnership entered into a Forward Delivery Bond Purchase Agreement (“Bond Purchase Commitment”) to purchase an approximately up to $20.0 million new mortgage revenue bond secured by a multifamily residential property, Villas at Plano Gateway Senior Living Apartments, under construction in Plano, Texas. The mortgage revenue bond will have a stated annual interest rate of 6.0% per annum and bond proceeds must be used to pay off the third party construction loan. The Partnership accounts for the Bond Purchase Commitment as an available-for-sale security and, as such, records any changes in estimated fair value of the Bond Purchase Commitment as an asset or liability with changes in such valuation recorded in other comprehensive income.
	In July 2014, the Partnership entered into a Bond Purchase Commitment agreeing to purchase up to approximately $9.9 million new mortgage revenue bond secured by a multifamily residential property, 15 West Apartments, under construction in Vancouver, Washington. The mortgage revenue bond will have a stated annual interest rate of 6.25% and bond proceeds must be used to pay off the third party construction loan. The Partnership accounts for the Bond Purchase Commitment as an available-for-sale security and records any changes in estimated fair value of the Bond Purchase Commitment as an asset or liability with changes in such valuation recorded in other comprehensive income.
	The Company provided a guarantee on the $2.8 million mortgage secured by the Abbington at Stones River, a 96 unit multifamily property located in Tennessee, in addition to providing the approximately $1.6 million property loan to Foundation for Affordable Housing, the not-for-profit owner of the property. Based on the historical financial performance of the property and its estimated fair value, the Company estimates there is no value to record for this mortgage guarantee.
	The Partnership has also executed a Guarantee Agreement with the construction lender for Silver Moon. The terms of the Guarantee Agreement require the Partnership to guarantee that all construction costs are paid when due and pay any remaining outstanding principal and unpaid interest on the construction loan on or before July 1, 2015. No amounts have been accrued for this Guarantee Agreement as the Partnership expects that the construction loan will be sufficient to pay all costs during the construction period and that the proceeds from the mortgage revenue bond, taxable bond, and third party equity contribution to be sufficient to pay off all outstanding principal and interest on the construction loan on or before July 1, 2015.
	As the holder of residual interests issued in connection with its TEBS and TOB bond financing arrangements, the Partnership is required to guarantee certain losses that can be incurred by the trusts created in connection with these financings. These guarantees may result from a downgrade in the investment rating of mortgage revenue bonds held by the trust or of the senior securities issued by the trust, a ratings downgrade of the liquidity provider for the trust, increases in short term interest rates beyond pre-set maximums, an inability to re-market the senior securities or an inability to obtain liquidity for the trust. In the case of the TEBS, Freddie will step in first on an immediate basis and the Partnership will have 10 to 14 days to remedy. In each of these cases, the trust will be collapsed. If the proceeds from the sale of the trust collateral are not sufficient to pay the principal amount of the senior securities with accrued interest and the other expenses of the trusts, the Partnership will be required to fund any such shortfall pursuant to its guarantee. In the event of a shortfall the maximum exposure to loss would be approximately $367.9 million prior to the consideration of the proceeds from the sale of the trust collateral. The Partnership has never been required to reimburse the financing facilities for any shortfall.
	In connection with the sale of the Greens Property, the Company entered into guarantee agreements with the BC Partners under which the Company has guaranteed certain obligations of the general partner of the Greens of Pine Glen limited partnership, including an obligation to repurchase the interests of the BC Partners if certain “repurchase events” occur. A repurchase event is defined as any one of a number of events mainly focused on the completion of the property rehabilitation, property rent stabilization, the delivery of LIHTCs, tax credit recapture and foreclosure. No amount has been accrued for this contingent liability because the likelihood of a repurchase event is remote. The maximum exposure to the Company at March 31, 2015, under the guarantee provision of the repurchase clause is approximately $1.3 million which represents 75% of the equity contributed by BC Partners to date.
	In connection with the Ohio Properties transaction in 2011, the Company entered into guarantee agreements with the BC Partners under which the Company has guaranteed certain obligations of the general partner of these limited partnerships, including an obligation to repurchase the interests of the BC Partners if certain “repurchase events” occur. A repurchase event is defined as any one of a number of events mainly focused on the completion of the property rehabilitation, property rent stabilization, the delivery of LIHTCs, tax credit recapture and foreclosure. Even if a repurchase event should occur, 25% of the BC equity would remain in the Ohio Properties and thus BC, a third party, would have sufficient equity in the Ohio Properties for the Company to recognize the sale discussed in Note 9. No amount has been accrued for this contingent liability because the likelihood of a repurchase event is remote. The maximum exposure to the Company at March 31, 2015, under the guarantee provision of the repurchase clause is approximately $4.9 million which represents 75% of the equity contributed by BC Partners.

Segment_Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Segments
	The Company consists of five reportable segments, Mortgage Revenue Bond Investments, MF Properties, Public Housing Capital Fund Trusts, MBS Investments, and Consolidated VIEs.  In addition to the five reportable segments, the Company also separately reports its consolidation and elimination information because it does not allocate certain items to the segments.
	Mortgage Revenue Bond Investments Segment
	The Mortgage Revenue Bond Investments segment consists of the Company’s portfolio of mortgage revenue bonds which have been issued to provide construction and/or permanent financing for Residential Properties and commercial properties in their market areas.  Such mortgage revenue bonds are held as long-term investments.  As of March 31, 2015, the Company held sixty mortgage revenue bonds not associated with Consolidated VIEs and two mortgage revenue bonds associated with Consolidated VIEs which are bonds that are eliminated in consolidation on the Company’s financial statements. The Residential Properties financed by fifty-seven mortgage revenue bonds contain a total of 7,379 rental units. In addition, three of the bonds’ properties are not operational and are under construction and two bonds are collateralized by commercial real estate (Note 4).
	MF Properties Segment
	The MF Properties segment consists of indirect equity interests in multifamily, student housing, and senior citizen residential properties which are not currently financed by mortgage revenue bonds held by the Partnership but which the Partnership eventually intends to finance by such bonds through a restructuring.  In connection with any such restructuring, the Partnership will be required to dispose of any equity interest held in such MF Properties.  Other than The Colonial property discussed in Note 7, the Partnership’s interests in its current MF Properties are not currently classified as Assets held for sale because the Partnership is not actively marketing them for sale, there is no definitive purchase agreement in existence that, under current guidance, can be recognized as a sale of real estate assets and, therefore, no sale is expected in the next twelve months. During the time the Partnership holds an interest in an MF Property, any net rental income generated by the MF Properties in excess of debt service will be available for distribution to the Partnership in accordance with its interest in the MF Property.  Any such cash distribution will contribute to the Partnership’s CAD.  As of March 31, 2015, the Company consolidated the results of nine MF Properties containing a total of 2,169 rental units (Note 7).
	Other Investments
	The Partnership Agreement authorizes the Company to make investments other than in mortgage revenue bonds provided that these other investments are rated in one of the four highest rating categories by a national securities rating agency and do not constitute more than 25% of the Company’s assets at the time of acquisition as required under the Agreement of Limited Partnership. In addition, the amount of other investments is limited based on the conditions to the exemption from registration under the Investment Company Act of 1940. The Company currently owns other investments, PHC Certificates and MBS, which are reported as two separate segments.
	The PHC Trusts segment consists of the assets, liabilities, and related income and expenses of the PHC Trusts. The Partnership consolidates the PHC Trusts due to its ownership of the LIFERS issued by the three PHC Trusts, which hold custodial receipts evidencing loans made to a number of local public housing authorities. Principal and interest on these loans are payable by the respective public housing authorities out of annual appropriations to be made to the public housing authorities by the HUD under HUD’s Capital Fund Program established under the Capital Fund Program.
	The MBS segment consists of the assets, liabilities, and related income and expenses of the MBS TOB Trusts that the Company consolidated due to its ownership of the LIFERs issued by the MBS TOB Trusts. These MBS TOB Trusts are securitizations of state-issued mortgage-backed securities which are backed by residential mortgage loans. These investments were acquired during the fourth quarter of 2012 through the second quarter of 2013 and all but three MBS were sold in 2014 (Note 6).
	The Consolidated VIE Segment
	The Consolidated VIE segment consists of multifamily residential properties which are financed with mortgage revenue bonds held by the Partnership, the assets, liabilities and operating results of which are consolidated with those of the Partnership as a result of consolidation guidance.  The mortgage revenue bonds on these Consolidated VIE properties are eliminated from the Company’s financial statements as a result of such consolidation, however, such bonds are held as long-term investments by the Partnership which continues to be entitled to receive principal and interest payments on such bonds.  The Company does not actually own an equity position in the Consolidated VIEs or their underlying properties.  As of March 31, 2015, the Company consolidated two VIEs containing a total 410 units (Note 3).
	Management’s goals with respect to the properties constituting the Company’s Consolidated VIE and MF Properties reportable segments is to generate increasing amounts of net rental income from these properties that will allow them to (i) make all payments of base interest, and possibly pay contingent interest, on the properties, and (ii) distribute net rental income to the Partnership from the MF Properties segment until such properties can be refinanced with additional mortgage revenue bonds meeting the Partnership’s investment criteria.  In order to achieve these goals, management of these multifamily residential properties is focused on: (i) maintaining high economic occupancy and increasing rental rates through effective leasing, reduced turnover rates and providing quality maintenance and services to maximize resident satisfaction; (ii) managing operating expenses and achieving cost reductions through operating efficiencies and economies of scale generally inherent in the management of a portfolio of multiple properties; and (iii) emphasizing regular programs of repairs, maintenance and property improvements to enhance the competitive advantage and value of its properties in their respective market areas.
	The following table details certain key financial information for the Company’s reportable segments for the three months ended March 31, 2015 and 2014:
		For the Three Months Ended,
		March 31, 2015			March 31, 2014
	Total revenues
	Mortgage Revenue Bond Investments	$	7,549,171		$	8,260,913
	MF Properties	4,302,301			3,150,344
	Public Housing Capital Fund Trust Certificates	732,903			800,828
	Mortgage-Backed Securities	152,860			421,160
	Consolidated VIEs	804,068			800,872
	Consolidation/eliminations	(230,610		)	(233,277		)
	Total revenues	$	13,310,693		$	13,200,840
	Interest expense
	Mortgage Revenue Bond Investments	$	2,947,100		$	1,149,922
	MF Properties	712,899			563,340
	Public Housing Capital Fund Trust Certificates	296,460			337,557
	Mortgage-Backed Securities	37,697			118,730
	Consolidated VIEs	569,934			557,884
	Consolidation/eliminations	(574,969		)	(557,884		)
	Total interest expense	$	3,989,121		$	2,169,549
	Depreciation expense
	Mortgage Revenue Bond Investments	$	—		$	—
	MF Properties	1,454,179			1,019,366
	Public Housing Capital Fund Trust Certificates	—			—
	Mortgage-Backed Securities	—			—
	Consolidated VIEs	239,120			232,781
	Consolidation/eliminations	—			—
	Total depreciation expense	$	1,693,299		$	1,252,147
	Net income (loss)
	Mortgage Revenue Bond Investments	$	2,520,116		$	5,628,100
	MF Properties	(393,641		)	(224,508		)
	Public Housing Capital Fund Trust Certificates	429,148			456,118
	Mortgage-Backed Securities	115,022			299,890
	Consolidated VIEs	(497,170		)	(444,098		)
	Consolidation/eliminations	351,004			331,327
	Net income - America First Multifamily Investors, L. P.	$	2,524,479		$	6,046,829
	The following table details certain key financial information for the Company’s reportable segments as of March 31, 2015 and December 31, 2014:
		31-Mar-15			31-Dec-14
	Total assets
	Mortgage Revenue Bond Investments	$	723,613,539		$	698,637,412
	MF Properties	111,632,020			101,696,234
	Public Housing Capital Fund Trusts	60,664,767			61,577,848
	Mortgage-Backed Securities	15,104,963			15,101,309
	Consolidated VIEs	13,169,000			13,456,861
	Consolidation/eliminations	(151,451,921		)	(146,230,447		)
	Total assets	$	772,732,368		$	744,239,217
	Total partners’ capital
	Mortgage Revenue Bond Investments	$	344,804,295		$	355,480,225
	MF Properties	(6,379,698		)	18,600,449
	Public Housing Capital Fund Trusts	15,890,718			16,803,457
	Mortgage-Backed Securities	3,105,324			3,095,526
	Consolidated VIEs	(23,996,786		)	(23,499,616		)
Consolidation/eliminations	(30,196,628		)	(60,536,142		)
Total partners’ capital	$	303,227,225		$	309,943,899

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements (Notes)	3 Months Ended
	Mar. 31, 2015
Recent Accounting Pronouncements [Abstract]
Description of New Accounting Pronouncements Adopted and Not yet Adopted [Text Block]	Recently Issued Accounting Pronouncements
	In April 2015, the FASB issued Accounting Standards Update No. 2015-03 (ASU 2015-03), Interest - Imputation of Interest (Subtopic 835-30). ASU 2015-03 changes the presentation of debt issuance costs in the financial statements to present such costs as a direct deduction from the related debt liability rather than as an asset. Amortization of debt issuance costs will be reported as interest expense. This standard is effective for annual reporting periods beginning after December 15, 2015. The Partnership is still evaluating the impact of this pronouncement on the condensed consolidated financial statements.
	In February 2015, the FASB issued Accounting Standards Update No. 2015-02, Consolidations (Topic 810) (ASU 2015-02).  This ASU amends the consolidation requirements in ASC 810 and significantly changes the consolidation analysis required under US GAAP.  The amendments in this ASU are effective for reporting periods beginning after December 15, 2016, with early adoption permitted.  The Partnership is still evaluating the impact of this pronouncement on the condensed consolidated financial statements.
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ASU No. 2014-15, “Presentation of Financial Statements-Going Concern”.   ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. The amendments in this ASU are effective for reporting periods beginning after December 15, 2016, with early adoption permitted. The Partnership is still evaluating the impact of this pronouncement on the condensed consolidated financial statements.
	In May 2014, the FASB issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers (Topic 606). ASU 2014-09 supersedes the revenue recognition guidance in Topic 605, Revenue Recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods and services to customers in an amount that reflects the consideration to which the entity expects to be entitled in the exchange for those goods or services. This standard is effective for annual reporting periods beginning after December 15, 2016. The Partnership is still evaluating the impact of this pronouncement on the condensed consolidated financial statements.

Subsequent_Events_Notes

Subsequent Events (Notes)	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events
	On April 6, 2015, a commission agreement was executed to list the Fairmont Oaks property for sale. The proceeds from the sale are expected to be more than the carrying value of the property’s assets and the sale is expected to be completed before the end of 2015.
	In April 2015, the Company acquired at par an approximate $13.3 million par value Series 2015A mortgage revenue bond with a stated interest rate of 6.0%, which will mature on May 1, 2052. In addition, the Company purchased a $125,000 par value Subordinate Series 2015B mortgage revenue bond with a stated interest rate of 12.0% which will mature on June 1, 2052. These mortgage revenue bonds are secured by Perrin Square, a 236 unit multifamily residential property in San Antonio, Texas.

Variable_Interest_Entities_Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2015
Variable Interest Entities [Abstract]
Variable Interest Entity, Classification of Carrying Amount, Assets [Table Text Block]	The following table presents information regarding the classification of the assets at their carrying value and maximum exposure to loss held by the Partnership as of March 31, 2015, which constitute VIEs:
		31-Mar-15
		Balance Sheet Classification								Maximum Exposure to Loss
		Mortgage Revenue Bond				Property Loan				Mortgage Revenue Bond				Property Loan
	Ashley Square Apartments	$	5,642,269			$	1,482,000			$	5,144,000			$	7,635,520
	Bruton Apartments	19,443,819				—				18,145,000				—
	Cross Creek	8,547,448				3,586,115				6,082,064				3,586,115
	Glenview Apartments	6,855,286				—				6,723,000				—
	Harden Ranch	9,920,953				—				9,300,000				—
	Montclair Apartments	3,606,478				—				3,458,000				—
	Santa Fe Apartments	4,856,631				—				4,736,000				—
	Tyler Park Apartments	8,474,338				—				8,100,000				—
	Westside Village Market	5,644,156				—				5,400,000				—
		$	72,991,378			$	5,068,115			$	67,088,064			$	11,221,635
Schedule of Condensed Income Statement [Table Text Block]	Condensed Consolidating Statements of Operations for the three months ended March 31, 2015 and 2014:
		Partnership For the Three Months Ended March 31, 2015				Consolidated VIEs For the Three Months Ended March 31, 2015				Consolidation -Elimination For the Three Months Ended March 31, 2015				Total For the Three Months Ended March 31, 2015
	Revenues:
	Property revenues	$	4,302,301			$	804,068			$	—			$	5,106,369
	Investment income	8,210,394				—				(230,610		)		7,979,784
	Other interest income	224,540				—				—				224,540
	Total revenues	12,737,235				804,068				(230,610		)		13,310,693
	Expenses:
	Real estate operating (exclusive of items shown below)	2,471,030				487,575				—				2,958,605
	Depreciation and amortization	1,794,814				243,729				(6,645		)		2,031,898
	Interest	3,994,156				569,934				(574,969		)		3,989,121
	General and administrative	1,807,481				—				—				1,807,481
	Total expenses	10,067,481				1,301,238				(581,614		)		10,787,105
	Net income (loss)	2,669,754				(497,170		)		351,004				2,523,588
	Net loss attributable to noncontrolling interest	(891		)		—				—				(891		)
	Net income (loss) - America First Multifamily Investors, L. P.	$	2,670,645			$	(497,170	)		$	351,004			$	2,524,479
		Partnership For the Three Months Ended March 31, 2014				Consolidated VIEs For the Three Months Ended March 31, 2014				Consolidation -Elimination For the Three Months Ended March 31, 2014				Total For the Three Months Ended March 31, 2014
	Revenues:
	Property revenues	$	3,150,344			$	800,872			$	—			$	3,951,216
	Investment income	6,438,835				—				(233,277		)		6,205,558
	Gain on mortgage revenue bond - redemption	2,835,243				—				—				2,835,243
	Other interest income	208,823				—				—				208,823
	Total revenues	12,633,245				800,872				(233,277		)		13,200,840
	Expenses:
	Real estate operating (exclusive of items shown below)	1,650,647				449,646				—				2,100,293
	Depreciation and amortization	1,382,626				237,440				(6,720		)		1,613,346
	Interest	2,169,549				557,884				(557,884		)		2,169,549
	General and administrative	1,270,926				—				—				1,270,926
	Total expenses	6,473,748				1,244,970				(564,604		)		7,154,114
	Net income (loss)	6,159,497				(444,098		)		331,327				6,046,726
	Net loss attributable to noncontrolling interest	(103		)		—				—				(103		)
	Net income (loss) - America First Multifamily Investors, L. P.	$	6,159,600			$	(444,098	)		$	331,327			$	6,046,829
Schedule of Condensed Balance Sheet [Table Text Block]	Condensed Consolidating Balance Sheets as of March 31, 2015 and December 31, 2014:
			Partnership as of March 31, 2015				Consolidated VIEs as of March 31, 2015				Consolidation -Elimination as of March 31, 2015				Total as of March 31, 2015
	Assets
	Cash and cash equivalents		$	24,180,224			$	25,023			$	—			$	24,205,247
	Restricted cash		7,350,135				486,707				—				7,836,842
	Interest receivable		6,476,392				—				(670,102		)		5,806,290
	Mortgage revenue bonds held in trust, at fair value		442,029,721				—				(16,006,874		)		426,022,847
	Mortgage revenue bonds, at fair value		81,875,851				—				—				81,875,851
	Public housing capital fund trusts, at fair value		60,272,941				—				—				60,272,941
	Mortgage-backed securities, at fair value		14,884,339				—				—				14,884,339
	Real estate assets:
	Land and improvements		13,754,093				1,836,400				—				15,590,493
	Buildings and improvements		110,742,966				21,257,476				—				132,000,442
	Real estate assets before accumulated depreciation		124,497,059				23,093,876				—				147,590,935
	Accumulated depreciation		(15,513,016		)		(10,814,129		)		—				(26,327,145		)
	Net real estate assets		108,984,043				12,279,747				—				121,263,790
	Other assets		41,298,994				377,523				(11,112,296		)		30,564,221
	Total Assets		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
	Liabilities
	Accounts payable, accrued expenses and other liabilities		$	4,623,103			$	22,479,786			$	(22,107,352	)		$	4,995,537
	Distribution payable		7,607,693				—				—				7,607,693
	Debt financing		379,307,493				—				—				379,307,493
	Mortgage payable		76,445,451				14,686,000				(14,686,000		)		76,445,451
	Derivative swap		1,165,855				—				—				1,165,855
	Total Liabilities		469,149,595				37,165,786				(36,793,352		)		469,522,029
	Partners' Capital
	General Partner		512,533				—				—				512,533
	Beneficial Unit Certificate holders		317,707,398				—				6,244,916				323,952,314
	Unallocated loss of Consolidated VIEs		—				(23,996,786		)		2,759,164				(21,237,622		)
	Total Partners' Capital		318,219,931				(23,996,786		)		9,004,080				303,227,225
	Noncontrolling interest		(16,886		)		—				—				(16,886		)
	Total Capital		318,203,045				(23,996,786		)		9,004,080				303,210,339
	Total Liabilities and Partners' Capital		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
			Partnership as of December 31, 2014				Consolidated VIEs as of December 31, 2014				Consolidation -Elimination as of December 31, 2014				Total as of December 31, 2014
	Assets
	Cash and cash equivalents		$	49,157,571			$	35,772			$	—			$	49,193,343
	Restricted cash		11,141,496				544,233				—				11,685,729
	Interest receivable		4,791,828				—				(670,342		)		4,121,486
	Mortgage revenue bonds held in trust, at fair value		394,568,208				—				(16,145,116		)		378,423,092
	Mortgage revenue bonds, at fair value		70,601,045				—				—				70,601,045
	Public housing capital fund trusts, at fair value		61,263,123				—				—				61,263,123
	Mortgage-backed securities, at fair value		14,841,558				—				—				14,841,558
	Real estate assets:
	Land and improvements		13,753,493				1,836,400				—				15,589,893
	Buildings and improvements		110,706,173				21,204,048				—				131,910,221
	Real estate assets before accumulated depreciation		124,459,666				23,040,448				—				147,500,114
	Accumulated depreciation		(14,108,154		)		(10,583,646		)		—				(24,691,800		)
	Net real estate assets		110,351,512				12,456,802				—				122,808,314
	Other assets		41,958,914				420,054				(11,077,441		)		31,301,527
	Total Assets		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217
	Liabilities
	Accounts payable, accrued expenses and other liabilities		$	4,123,346			$	22,225,477			$	(21,721,734	)		$	4,627,089
	Distribution payable		7,617,390				—				—				7,617,390
	Debt financing		345,359,000				—				—				345,359,000
	Mortgages payable		76,707,834				14,731,000				(14,731,000		)		76,707,834
	Total Liabilities		433,807,570				36,956,477				(36,452,734		)		434,311,313
	Partners' Capital
	General Partner		578,238				—				—				578,238
	Beneficial Unit Certificate holders		324,305,442				—				6,151,675				330,457,117
	Unallocated deficit of Consolidated VIEs		—				(23,499,616		)		2,408,160				(21,091,456		)
	Total Partners' Capital		324,883,680				(23,499,616		)		8,559,835				309,943,899
	Noncontrolling interest		(15,995		)		—				—				(15,995		)
	Total Capital		324,867,685				(23,499,616		)		8,559,835				309,927,904
	Total Liabilities and Partners' Capital		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217

Investments_in_Mortgage_Revenu1

Investments in Mortgage Revenue Bonds (Tables)	3 Months Ended
	Mar. 31, 2015
Investments in Mortgage Revenue Bonds [Abstract]
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	The Company had the following investments in mortgage revenue bonds as of dates shown:
		March 31, 2015
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
	Arbors at Hickory Ridge (3)	$	11,569,614	$	1,239,453	$	—		$	12,809,067
	Ashley Square (1)	5,144,000		498,269		—			5,642,269
	Avistar at Chase Hill A Bond (3)	10,000,000		1,226,837		—			11,226,837
	Avistar at the Crest A Bond (3)	9,700,000		1,054,230		—			10,754,230
	Avistar at the Oaks A Bond (3)	7,800,000		802,611		—			8,602,611
	Avistar in 09 A Bond (3)	6,735,000		787,493		—			7,522,493
	Avistar on the Boulevard A Bond (3)	16,525,000		1,795,997		—			18,320,997
	Avistar on the Hills A Bond (3)	5,389,000		554,521		—			5,943,521
	Bella Vista (1)	6,490,000		573,067		—			7,063,067
	Bridle Ridge (1)	7,625,000		595,665		—			8,220,665
	Brookstone (1)	7,469,357		1,652,619		—			9,121,976
	Bruton Apartments (2)	18,145,000		1,298,819		—			19,443,819
	Concord at Gulfgate A Bond (2)	17,060,000		1,417,004		—			18,477,004
	Concord at Little York A Bond (2)	12,480,000		820,061		—			13,300,061
	Concord at Williamcrest A Bond (2)	18,020,000		1,184,094		—			19,204,094
	Copper Gate Apartments (3)	5,220,000		390,143		—			5,610,143
	Cross Creek (1)	6,082,064		2,465,384		—			8,547,448
	Decatur Angle (2)	23,000,000		727,260		—			23,727,260
	Greens Property A Bond (3)	8,348,000		943,736		—			9,291,736
	Harden Ranch A Bond (3)	6,960,000		623,129		—			7,583,129
	Lake Forest (1)	8,856,000		1,037,354		—			9,893,354
	Live 929 Apartments (2)	40,874,690		4,154,777		—			45,029,467
	Pro Nova 2014-1 and 2014-2 (2)	20,092,423		889,777		—			20,982,200
	Ohio Properties A Bonds (1)	14,383,000		2,328,438		—			16,711,438
	Runnymede (1)	10,440,000		1,297,483		—			11,737,483
	Southpark (1)	11,861,623		3,599,239		—			15,460,862
	The Palms at Premier Park Apartments (3)	20,125,232		2,005,005		—			22,130,237
	The Suites on Paseo A Bond (2)	35,450,000		2,901,583		—			38,351,583
	Tyler Park Apartments A Bond (3)	6,075,000		383,329		—			6,458,329
	Westside Village Market A Bond (3)	3,970,000		250,505		—			4,220,505
	Woodlynn Village (1)	4,390,000		244,962		—			4,634,962
	Mortgage revenue bonds held in trust	$	386,280,003	$	39,742,844	$	—		$	426,022,847
	(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
	(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
	(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
		31-Mar-15
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
	Avistar at Chase Hill B Bond	$	965,000	$	88,486	$	—		$	1,053,486
	Avistar at the Crest B Bond	759,000		69,600		—			828,600
	Avistar at the Oaks B Bond	554,000		50,841		—			604,841
	Avistar in 09 B Bond	457,000		41,939		—			498,939
	Avistar on the Boulevard B Bond	451,000		41,357		—			492,357
	Concord at Gulfgate B Bond	2,125,000		592,323		—			2,717,323
	Concord at Little York B Bond	960,000		252,586		—			1,212,586
	Concord at Williamcrest B Bond	2,800,000		736,708		—			3,536,708
	Glenview Apartments	6,723,000		132,286		—			6,855,286
	Greens Property B Bond	945,059		249,820		—			1,194,879
	Harden Ranch B Bond	2,340,000		—		(2,176		)	2,337,824
	Heritage Square	11,705,000		295,073		—			12,000,073
	Montclair Apartments	3,458,000		148,478		—			3,606,478
	Ohio Properties B Bonds	3,570,720		644,819		—			4,215,539
	Renaissance	12,675,000		762,823		—			13,437,823
	Santa Fe Apartments	4,736,000		120,631		—			4,856,631
	The Suites on Paseo B Bond	5,500,000		—		—			5,500,000
	Tyler Park B Bond	2,025,000		—		(8,991		)	2,016,009
	Vantage at Harlingen	6,692,000		260,386		—			6,952,386
	Vantage at Judson	6,049,000		485,432		—			6,534,432
	Westside Village B Bond	1,430,000		—		(6,349		)	1,423,651
	Mortgage revenue bonds	$	76,919,779	$	4,973,588	$	(17,516	)	$	81,875,851
		31-Dec-14
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs		Unrealized Gains		Unrealized Loss			Estimated Fair Value
Arbors at Hickory Ridge (3)	$	11,570,933	$	1,792,303	$	—		$	13,363,236
Ashley Square (1)	5,159,000		486,559		—			5,645,559
Avistar at Chase Hill A Bond (3)	10,000,000		1,196,800		—			11,196,800
Avistar at the Crest A Bond (3)	9,700,000		1,419,692		—			11,119,692
Avistar at the Oaks A Bond(3)	7,800,000		869,622		—			8,669,622
Avistar in 09 A Bond (3)	6,735,000		750,885		—			7,485,885
Avistar on the Boulevard A Bond (3)	16,525,000		2,418,599		—			18,943,599
Avistar on the Hills A Bond (3)	5,389,000		743,520		—			6,132,520
Bella Vista (1)	6,490,000		625,571		—			7,115,571
Bridle Ridge (1)	7,655,000		659,249		—			8,314,249
Brookstone (1)	7,468,888		1,360,589		—			8,829,477
Bruton Apartments (2)	18,145,000		1,455,955		—			19,600,955
Copper Gate Apartments (3)	5,220,000		563,656		—			5,783,656
Cross Creek (1)	6,074,817		2,542,262		—			8,617,079
Decatur Angle (2)	23,000,000		919,540		—			23,919,540
Greens Property A Bond (3)	8,366,000		1,005,119		—			9,371,119
Harden Ranch A Bond (3)	6,960,000		511,421		—			7,471,421
Lake Forest (1)	8,886,000		1,003,614		—			9,889,614
Live 929 Apartments (2)	40,895,739		3,797,745		—			44,693,484
Pro Nova 2014-1 and 2014-2 (2)	20,095,169		1,043,431		—			21,138,600
Ohio Properties A Bonds (1)	14,407,000		2,444,034		—			16,851,034
Runnymede (1)	10,440,000		1,385,910		—			11,825,910
Southpark (1)	11,842,206		3,743,692		—			15,585,898
The Palms at Premier Park Apartments (3)	20,152,000		2,680,619		—			22,832,619
The Suites on Paseo (2)	35,450,000		3,193,691		—			38,643,691
Tyler Park Apartments A Bond (3)	6,075,000		345,060		—			6,420,060
Westside Village Market A Bond (3)	3,970,000		225,496		—			4,195,496
Woodlynn Village (1)	4,390,000		376,706		—			4,766,706
Mortgage revenue bonds held in trust	$	338,861,752	$	39,561,340	$	—		$	378,423,092
(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
	31-Dec-14
Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Avistar at Chase Hill B Bond	$	965,000	$	144,769	$	—		$	1,109,769
Avistar at the Crest B Bond	759,000		124,286		—			883,286
Avistar at the Oaks B Bond	554,000		54,325		—			608,325
Avistar in 09 B Bond	457,000		50,608		—			507,608
Avistar on the Boulevard B Bond	451,000		73,851		—			524,851
Greens Property B Bond	945,638		376,203		—			1,321,841
Glenview Apartments	6,723,000		—		—			6,723,000
Harden Ranch B Bond	2,340,000		—		(1,501		)	2,338,499
Heritage Square	11,705,000		1,109,125		—			12,814,125
Montclair Apartments	3,458,000		—		—			3,458,000
Ohio Properties B Bonds	3,573,430		668,542		—			4,241,972
Renaissance	12,675,000		1,055,807		—			13,730,807
Santa Fe Apartments	4,736,000		—		—			4,736,000
Tyler Park Apartments B Bond	2,025,000		—		(17,395		)	2,007,605
Vantage at Harlingen	6,692,000		707,813		—			7,399,813
Vantage at Judson	6,049,000		717,230		—			6,766,230
Westside Village Market B Bond	1,430,000		—		(686		)	1,429,314
Mortgage revenue bonds	$	65,538,068	$	5,082,559	$	(19,582	)	$	70,601,045
The carrying value of the Company’s MBS as of March 31, 2015 and December 31, 2014 as follows:
Agency Rating of MBS (1)	Cost adjusted for amortization of premium		Unrealized Gain		Unrealized Loss			Estimated Fair Value at March 31, 2015
“AAA”	$	5,300,637	$	—	$	(251,537	)	$	5,049,100
“AA”	10,059,739		—		(224,500		)	9,835,239
	$	15,360,376	$	—	$	(476,037	)	$	14,884,339
(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.
Agency Rating of MBS (1)	Cost adjusted for amortization of premium		Unrealized Gain		Unrealized Loss			Estimated Fair Value at December 31, 2014
“AAA”	$	5,304,974	$	—	$	(250,624	)	$	5,054,350
“AA”	10,062,667		—		(275,459		)	9,787,208
	$	15,367,641	$	—	$	(526,083	)	$	14,841,558
(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.

Public_Housing_Capital_Fund_Tr1

Public Housing Capital Fund Trusts Public Housing Capital Fund Trusts (Tables)	3 Months Ended
	Mar. 31, 2015
Public Housing Capital Fund Trusts [Abstract]
Marketable Securities [Table Text Block]	The following table sets forth certain information relating to the PHC Certificates held in the PHC TOB Trusts on March 31, 2015 and December 31, 2014:
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life			Principal Outstanding March 31, 2015
	Public Housing Capital Fund Trust Certificate I	10		AA-	5.3	%		$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.47		A+	4.28	%		12,429,186
	Public Housing Capital Fund Trust Certificate III	10.56		BBB	5.42	%		20,898,432
	Total Public Housing Capital Fund Trust Certificates							$	59,308,398
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life			Principal Outstanding December 31, 2014
	Public Housing Capital Fund Trust Certificate I	10.25		AA-	5.33	%		$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.72		A+	4.28	%		12,429,186
	Public Housing Capital Fund Trust Certificate III	10.81		BBB	5.42	%		20,898,432
	Total Public Housing Capital Fund Trust Certificates							$	59,308,398
	Description of certain terms of the Company’s MBS is as follows:
	Agency Rating of MBS	Principal Outstanding March 31, 2015			Weighted Average Maturity Date		Weighted Average Coupon Interest Rate
	“AAA”	$	5,000,000		July 1, 2032		4.6	%
	“AA”	9,765,000			July 9, 2036		4.2	%
		$	14,765,000
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The Company had the following investments in the PHC Certificates on March 31, 2015 and December 31, 2014:
	Description of Public Housing Capital Fund Trust Certificates	Cost adjusted for amortization of premium and discounts			Unrealized Gain				Unrealized Loss			Estimated Fair Value at March 31, 2015
	Public Housing Capital Fund Trust I	$	27,379,187		$	484,160			$	—		$	27,863,347
	Public Housing Capital Fund Trust II	12,011,169			—				(40,868		)	11,970,301
	Public Housing Capital Fund Trust III	20,483,912			—				(44,619		)	20,439,293
		$	59,874,268		$	484,160			$	(85,487	)	$	60,272,941
	Description of Public Housing Capital Fund Trust Certificates	Cost adjusted for amortization of premium and discounts			Unrealized Gain				Unrealized Loss			Estimated Fair Value at December 31, 2014
	Public Housing Capital Fund Trust Certificate I	$	27,414,100		$	933,789			$	—		$	28,347,889
	Public Housing Capital Fund Trust Certificate II	11,999,721			152,293				—			12,152,014
	Public Housing Capital Fund Trust Certificate III	20,474,100			289,120				—			20,763,220
		$	59,887,921		$	1,375,202			$	—		$	61,263,123

MortgageBacked_Securities_Tabl

Mortgage-Backed Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Mortgage-Backed Securities [Abstract]
Marketable Securities [Table Text Block]	The following table sets forth certain information relating to the PHC Certificates held in the PHC TOB Trusts on March 31, 2015 and December 31, 2014:
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life			Principal Outstanding March 31, 2015
	Public Housing Capital Fund Trust Certificate I	10		AA-	5.3	%		$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.47		A+	4.28	%		12,429,186
	Public Housing Capital Fund Trust Certificate III	10.56		BBB	5.42	%		20,898,432
	Total Public Housing Capital Fund Trust Certificates							$	59,308,398
		Average Remaining Lives (Years)		Investment Rating	Weighted Average Interest Rate over Life			Principal Outstanding December 31, 2014
	Public Housing Capital Fund Trust Certificate I	10.25		AA-	5.33	%		$	25,980,780
	Public Housing Capital Fund Trust Certificate II	9.72		A+	4.28	%		12,429,186
	Public Housing Capital Fund Trust Certificate III	10.81		BBB	5.42	%		20,898,432
	Total Public Housing Capital Fund Trust Certificates							$	59,308,398
	Description of certain terms of the Company’s MBS is as follows:
	Agency Rating of MBS	Principal Outstanding March 31, 2015			Weighted Average Maturity Date		Weighted Average Coupon Interest Rate
	“AAA”	$	5,000,000		July 1, 2032		4.6	%
	“AA”	9,765,000			July 9, 2036		4.2	%
		$	14,765,000
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	The Company had the following investments in mortgage revenue bonds as of dates shown:
		March 31, 2015
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs			Unrealized Gain				Unrealized Loss			Estimated Fair Value
	Arbors at Hickory Ridge (3)	$	11,569,614		$	1,239,453			$	—		$	12,809,067
	Ashley Square (1)	5,144,000			498,269				—			5,642,269
	Avistar at Chase Hill A Bond (3)	10,000,000			1,226,837				—			11,226,837
	Avistar at the Crest A Bond (3)	9,700,000			1,054,230				—			10,754,230
	Avistar at the Oaks A Bond (3)	7,800,000			802,611				—			8,602,611
	Avistar in 09 A Bond (3)	6,735,000			787,493				—			7,522,493
	Avistar on the Boulevard A Bond (3)	16,525,000			1,795,997				—			18,320,997
	Avistar on the Hills A Bond (3)	5,389,000			554,521				—			5,943,521
	Bella Vista (1)	6,490,000			573,067				—			7,063,067
	Bridle Ridge (1)	7,625,000			595,665				—			8,220,665
	Brookstone (1)	7,469,357			1,652,619				—			9,121,976
	Bruton Apartments (2)	18,145,000			1,298,819				—			19,443,819
	Concord at Gulfgate A Bond (2)	17,060,000			1,417,004				—			18,477,004
	Concord at Little York A Bond (2)	12,480,000			820,061				—			13,300,061
	Concord at Williamcrest A Bond (2)	18,020,000			1,184,094				—			19,204,094
	Copper Gate Apartments (3)	5,220,000			390,143				—			5,610,143
	Cross Creek (1)	6,082,064			2,465,384				—			8,547,448
	Decatur Angle (2)	23,000,000			727,260				—			23,727,260
	Greens Property A Bond (3)	8,348,000			943,736				—			9,291,736
	Harden Ranch A Bond (3)	6,960,000			623,129				—			7,583,129
	Lake Forest (1)	8,856,000			1,037,354				—			9,893,354
	Live 929 Apartments (2)	40,874,690			4,154,777				—			45,029,467
	Pro Nova 2014-1 and 2014-2 (2)	20,092,423			889,777				—			20,982,200
	Ohio Properties A Bonds (1)	14,383,000			2,328,438				—			16,711,438
	Runnymede (1)	10,440,000			1,297,483				—			11,737,483
	Southpark (1)	11,861,623			3,599,239				—			15,460,862
	The Palms at Premier Park Apartments (3)	20,125,232			2,005,005				—			22,130,237
	The Suites on Paseo A Bond (2)	35,450,000			2,901,583				—			38,351,583
	Tyler Park Apartments A Bond (3)	6,075,000			383,329				—			6,458,329
	Westside Village Market A Bond (3)	3,970,000			250,505				—			4,220,505
	Woodlynn Village (1)	4,390,000			244,962				—			4,634,962
	Mortgage revenue bonds held in trust	$	386,280,003		$	39,742,844			$	—		$	426,022,847
	(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
	(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
	(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
		31-Mar-15
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs			Unrealized Gain				Unrealized Loss			Estimated Fair Value
	Avistar at Chase Hill B Bond	$	965,000		$	88,486			$	—		$	1,053,486
	Avistar at the Crest B Bond	759,000			69,600				—			828,600
	Avistar at the Oaks B Bond	554,000			50,841				—			604,841
	Avistar in 09 B Bond	457,000			41,939				—			498,939
	Avistar on the Boulevard B Bond	451,000			41,357				—			492,357
	Concord at Gulfgate B Bond	2,125,000			592,323				—			2,717,323
	Concord at Little York B Bond	960,000			252,586				—			1,212,586
	Concord at Williamcrest B Bond	2,800,000			736,708				—			3,536,708
	Glenview Apartments	6,723,000			132,286				—			6,855,286
	Greens Property B Bond	945,059			249,820				—			1,194,879
	Harden Ranch B Bond	2,340,000			—				(2,176		)	2,337,824
	Heritage Square	11,705,000			295,073				—			12,000,073
	Montclair Apartments	3,458,000			148,478				—			3,606,478
	Ohio Properties B Bonds	3,570,720			644,819				—			4,215,539
	Renaissance	12,675,000			762,823				—			13,437,823
	Santa Fe Apartments	4,736,000			120,631				—			4,856,631
	The Suites on Paseo B Bond	5,500,000			—				—			5,500,000
	Tyler Park B Bond	2,025,000			—				(8,991		)	2,016,009
	Vantage at Harlingen	6,692,000			260,386				—			6,952,386
	Vantage at Judson	6,049,000			485,432				—			6,534,432
	Westside Village B Bond	1,430,000			—				(6,349		)	1,423,651
	Mortgage revenue bonds	$	76,919,779		$	4,973,588			$	(17,516	)	$	81,875,851
		31-Dec-14
	Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs			Unrealized Gains				Unrealized Loss			Estimated Fair Value
Arbors at Hickory Ridge (3)	$	11,570,933		$	1,792,303			$	—		$	13,363,236
Ashley Square (1)	5,159,000			486,559				—			5,645,559
Avistar at Chase Hill A Bond (3)	10,000,000			1,196,800				—			11,196,800
Avistar at the Crest A Bond (3)	9,700,000			1,419,692				—			11,119,692
Avistar at the Oaks A Bond(3)	7,800,000			869,622				—			8,669,622
Avistar in 09 A Bond (3)	6,735,000			750,885				—			7,485,885
Avistar on the Boulevard A Bond (3)	16,525,000			2,418,599				—			18,943,599
Avistar on the Hills A Bond (3)	5,389,000			743,520				—			6,132,520
Bella Vista (1)	6,490,000			625,571				—			7,115,571
Bridle Ridge (1)	7,655,000			659,249				—			8,314,249
Brookstone (1)	7,468,888			1,360,589				—			8,829,477
Bruton Apartments (2)	18,145,000			1,455,955				—			19,600,955
Copper Gate Apartments (3)	5,220,000			563,656				—			5,783,656
Cross Creek (1)	6,074,817			2,542,262				—			8,617,079
Decatur Angle (2)	23,000,000			919,540				—			23,919,540
Greens Property A Bond (3)	8,366,000			1,005,119				—			9,371,119
Harden Ranch A Bond (3)	6,960,000			511,421				—			7,471,421
Lake Forest (1)	8,886,000			1,003,614				—			9,889,614
Live 929 Apartments (2)	40,895,739			3,797,745				—			44,693,484
Pro Nova 2014-1 and 2014-2 (2)	20,095,169			1,043,431				—			21,138,600
Ohio Properties A Bonds (1)	14,407,000			2,444,034				—			16,851,034
Runnymede (1)	10,440,000			1,385,910				—			11,825,910
Southpark (1)	11,842,206			3,743,692				—			15,585,898
The Palms at Premier Park Apartments (3)	20,152,000			2,680,619				—			22,832,619
The Suites on Paseo (2)	35,450,000			3,193,691				—			38,643,691
Tyler Park Apartments A Bond (3)	6,075,000			345,060				—			6,420,060
Westside Village Market A Bond (3)	3,970,000			225,496				—			4,195,496
Woodlynn Village (1)	4,390,000			376,706				—			4,766,706
Mortgage revenue bonds held in trust	$	338,861,752		$	39,561,340			$	—		$	378,423,092
(1) Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
(2) Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
(3) Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
	31-Dec-14
Description of Mortgage Revenue Bonds	Cost adjusted for pay-downs			Unrealized Gain				Unrealized Loss			Estimated Fair Value
Avistar at Chase Hill B Bond	$	965,000		$	144,769			$	—		$	1,109,769
Avistar at the Crest B Bond	759,000			124,286				—			883,286
Avistar at the Oaks B Bond	554,000			54,325				—			608,325
Avistar in 09 B Bond	457,000			50,608				—			507,608
Avistar on the Boulevard B Bond	451,000			73,851				—			524,851
Greens Property B Bond	945,638			376,203				—			1,321,841
Glenview Apartments	6,723,000			—				—			6,723,000
Harden Ranch B Bond	2,340,000			—				(1,501		)	2,338,499
Heritage Square	11,705,000			1,109,125				—			12,814,125
Montclair Apartments	3,458,000			—				—			3,458,000
Ohio Properties B Bonds	3,573,430			668,542				—			4,241,972
Renaissance	12,675,000			1,055,807				—			13,730,807
Santa Fe Apartments	4,736,000			—				—			4,736,000
Tyler Park Apartments B Bond	2,025,000			—				(17,395		)	2,007,605
Vantage at Harlingen	6,692,000			707,813				—			7,399,813
Vantage at Judson	6,049,000			717,230				—			6,766,230
Westside Village Market B Bond	1,430,000			—				(686		)	1,429,314
Mortgage revenue bonds	$	65,538,068		$	5,082,559			$	(19,582	)	$	70,601,045
The carrying value of the Company’s MBS as of March 31, 2015 and December 31, 2014 as follows:
Agency Rating of MBS (1)	Cost adjusted for amortization of premium			Unrealized Gain				Unrealized Loss			Estimated Fair Value at March 31, 2015
“AAA”	$	5,300,637		$	—			$	(251,537	)	$	5,049,100
“AA”	10,059,739			—				(224,500		)	9,835,239
	$	15,360,376		$	—			$	(476,037	)	$	14,884,339
(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.
Agency Rating of MBS (1)	Cost adjusted for amortization of premium			Unrealized Gain				Unrealized Loss			Estimated Fair Value at December 31, 2014
“AAA”	$	5,304,974		$	—			$	(250,624	)	$	5,054,350
“AA”	10,062,667			—				(275,459		)	9,787,208
	$	15,367,641		$	—			$	(526,083	)	$	14,841,558
(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.

Real_Estate_Assets_Tables

Real Estate Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Real Estate Assets [Abstract]
Condensed Financial Statements [Table Text Block]	The Colonial property’s material financial statement components are reported in the condensed consolidated financial statements as follows:
	Financial Statement Descriptions		Amount
	Material Balance Sheet Components
	Net real estate assets		$	7,126,604
	Mortgage payable		$	7,476,799
	Material Statement of Operations Components
	Property revenues		$	449,100
	Real estate operating expenses		$	256,988
	Depreciation and amortization expenses		$	214,519
	Net loss		$	(98,156	)
Schedule of Condensed Balance Sheet [Table Text Block]	Condensed Consolidating Balance Sheets as of March 31, 2015 and December 31, 2014:
			Partnership as of March 31, 2015				Consolidated VIEs as of March 31, 2015				Consolidation -Elimination as of March 31, 2015				Total as of March 31, 2015
	Assets
	Cash and cash equivalents		$	24,180,224			$	25,023			$	—			$	24,205,247
	Restricted cash		7,350,135				486,707				—				7,836,842
	Interest receivable		6,476,392				—				(670,102		)		5,806,290
	Mortgage revenue bonds held in trust, at fair value		442,029,721				—				(16,006,874		)		426,022,847
	Mortgage revenue bonds, at fair value		81,875,851				—				—				81,875,851
	Public housing capital fund trusts, at fair value		60,272,941				—				—				60,272,941
	Mortgage-backed securities, at fair value		14,884,339				—				—				14,884,339
	Real estate assets:
	Land and improvements		13,754,093				1,836,400				—				15,590,493
	Buildings and improvements		110,742,966				21,257,476				—				132,000,442
	Real estate assets before accumulated depreciation		124,497,059				23,093,876				—				147,590,935
	Accumulated depreciation		(15,513,016		)		(10,814,129		)		—				(26,327,145		)
	Net real estate assets		108,984,043				12,279,747				—				121,263,790
	Other assets		41,298,994				377,523				(11,112,296		)		30,564,221
	Total Assets		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
	Liabilities
	Accounts payable, accrued expenses and other liabilities		$	4,623,103			$	22,479,786			$	(22,107,352	)		$	4,995,537
	Distribution payable		7,607,693				—				—				7,607,693
	Debt financing		379,307,493				—				—				379,307,493
	Mortgage payable		76,445,451				14,686,000				(14,686,000		)		76,445,451
	Derivative swap		1,165,855				—				—				1,165,855
	Total Liabilities		469,149,595				37,165,786				(36,793,352		)		469,522,029
	Partners' Capital
	General Partner		512,533				—				—				512,533
	Beneficial Unit Certificate holders		317,707,398				—				6,244,916				323,952,314
	Unallocated loss of Consolidated VIEs		—				(23,996,786		)		2,759,164				(21,237,622		)
	Total Partners' Capital		318,219,931				(23,996,786		)		9,004,080				303,227,225
	Noncontrolling interest		(16,886		)		—				—				(16,886		)
	Total Capital		318,203,045				(23,996,786		)		9,004,080				303,210,339
	Total Liabilities and Partners' Capital		$	787,352,640			$	13,169,000			$	(27,789,272	)		$	772,732,368
			Partnership as of December 31, 2014				Consolidated VIEs as of December 31, 2014				Consolidation -Elimination as of December 31, 2014				Total as of December 31, 2014
	Assets
	Cash and cash equivalents		$	49,157,571			$	35,772			$	—			$	49,193,343
	Restricted cash		11,141,496				544,233				—				11,685,729
	Interest receivable		4,791,828				—				(670,342		)		4,121,486
	Mortgage revenue bonds held in trust, at fair value		394,568,208				—				(16,145,116		)		378,423,092
	Mortgage revenue bonds, at fair value		70,601,045				—				—				70,601,045
	Public housing capital fund trusts, at fair value		61,263,123				—				—				61,263,123
	Mortgage-backed securities, at fair value		14,841,558				—				—				14,841,558
	Real estate assets:
	Land and improvements		13,753,493				1,836,400				—				15,589,893
	Buildings and improvements		110,706,173				21,204,048				—				131,910,221
	Real estate assets before accumulated depreciation		124,459,666				23,040,448				—				147,500,114
	Accumulated depreciation		(14,108,154		)		(10,583,646		)		—				(24,691,800		)
	Net real estate assets		110,351,512				12,456,802				—				122,808,314
	Other assets		41,958,914				420,054				(11,077,441		)		31,301,527
	Total Assets		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217
	Liabilities
	Accounts payable, accrued expenses and other liabilities		$	4,123,346			$	22,225,477			$	(21,721,734	)		$	4,627,089
	Distribution payable		7,617,390				—				—				7,617,390
	Debt financing		345,359,000				—				—				345,359,000
	Mortgages payable		76,707,834				14,731,000				(14,731,000		)		76,707,834
	Total Liabilities		433,807,570				36,956,477				(36,452,734		)		434,311,313
	Partners' Capital
	General Partner		578,238				—				—				578,238
	Beneficial Unit Certificate holders		324,305,442				—				6,151,675				330,457,117
	Unallocated deficit of Consolidated VIEs		—				(23,499,616		)		2,408,160				(21,091,456		)
	Total Partners' Capital		324,883,680				(23,499,616		)		8,559,835				309,943,899
	Noncontrolling interest		(15,995		)		—				—				(15,995		)
	Total Capital		324,867,685				(23,499,616		)		8,559,835				309,927,904
	Total Liabilities and Partners' Capital		$	758,675,255			$	13,456,861			$	(27,892,899	)		$	744,239,217
Schedule of Condensed Income Statement [Table Text Block]	Condensed Consolidating Statements of Operations for the three months ended March 31, 2015 and 2014:
		Partnership For the Three Months Ended March 31, 2015				Consolidated VIEs For the Three Months Ended March 31, 2015				Consolidation -Elimination For the Three Months Ended March 31, 2015				Total For the Three Months Ended March 31, 2015
	Revenues:
	Property revenues	$	4,302,301			$	804,068			$	—			$	5,106,369
	Investment income	8,210,394				—				(230,610		)		7,979,784
	Other interest income	224,540				—				—				224,540
	Total revenues	12,737,235				804,068				(230,610		)		13,310,693
	Expenses:
	Real estate operating (exclusive of items shown below)	2,471,030				487,575				—				2,958,605
	Depreciation and amortization	1,794,814				243,729				(6,645		)		2,031,898
	Interest	3,994,156				569,934				(574,969		)		3,989,121
	General and administrative	1,807,481				—				—				1,807,481
	Total expenses	10,067,481				1,301,238				(581,614		)		10,787,105
	Net income (loss)	2,669,754				(497,170		)		351,004				2,523,588
	Net loss attributable to noncontrolling interest	(891		)		—				—				(891		)
	Net income (loss) - America First Multifamily Investors, L. P.	$	2,670,645			$	(497,170	)		$	351,004			$	2,524,479
		Partnership For the Three Months Ended March 31, 2014				Consolidated VIEs For the Three Months Ended March 31, 2014				Consolidation -Elimination For the Three Months Ended March 31, 2014				Total For the Three Months Ended March 31, 2014
	Revenues:
	Property revenues	$	3,150,344			$	800,872			$	—			$	3,951,216
	Investment income	6,438,835				—				(233,277		)		6,205,558
	Gain on mortgage revenue bond - redemption	2,835,243				—				—				2,835,243
	Other interest income	208,823				—				—				208,823
	Total revenues	12,633,245				800,872				(233,277		)		13,200,840
	Expenses:
	Real estate operating (exclusive of items shown below)	1,650,647				449,646				—				2,100,293
	Depreciation and amortization	1,382,626				237,440				(6,720		)		1,613,346
	Interest	2,169,549				557,884				(557,884		)		2,169,549
	General and administrative	1,270,926				—				—				1,270,926
	Total expenses	6,473,748				1,244,970				(564,604		)		7,154,114
	Net income (loss)	6,159,497				(444,098		)		331,327				6,046,726
	Net loss attributable to noncontrolling interest	(103		)		—				—				(103		)
	Net income (loss) - America First Multifamily Investors, L. P.	$	6,159,600			$	(444,098	)		$	331,327			$	6,046,829
Schedule of Variable Interest Entities [Table Text Block]	The Company consolidated the following properties owned by Consolidated VIEs in continuing operations as of March 31, 2015 and December 31, 2014:
	Consolidated VIEs
	Property Name		Location		Number of Units			Land and Improvements				Buildings and Improvements				Carrying Value at March 31, 2015
	Bent Tree Apartments		Columbia, SC		232			$	986,000			$	12,348,139			$	13,334,139
	Fairmont Oaks Apartments		Gainesville, FL		178			850,400				8,909,337				9,759,737
																23,093,876
	Less accumulated depreciation (depreciation expense of approximately $239,000 in 2015)															(10,814,129		)
	Balance at March 31, 2015															$	12,279,747
	Consolidated VIEs
	Property Name		Location		Number of Units			Land and Improvements				Buildings and Improvements				Carrying Value at December 31, 2014
	Bent Tree Apartments		Columbia, SC		232			$	986,000			$	12,303,982			$	13,289,982
	Fairmont Oaks Apartments		Gainesville, FL		178			850,400				8,900,066				9,750,466
																23,040,448
	Less accumulated depreciation (depreciation expense of approximately $940,000 in 2014)															(10,583,646		)
	Balance at December 31, 2014															$	12,456,802
Schedule of Real Estate Properties [Table Text Block]	The Company had the following investments in MF Properties as of March 31, 2015 and December 31, 2014:
	MF Properties
	Property Name		Location		Number of Units			Land and Land Improvements				Buildings and				Carrying Value at March 31, 2015
												Improvements
	Arboretum		Omaha, NE		145			$	1,748,502			$	19,228,701			$	20,977,203
	Eagle Village		Evansville, IN		511			567,880				12,479,357				13,047,237
	Glynn Place		Brunswick, GA		128			743,996				4,945,091				5,689,087
	Meadowview		Highland Heights, KY		230			688,539				5,482,068				6,170,607
	Residences of DeCordova		Granbury, TX		110			1,137,832				8,015,812				9,153,644
	Residences of Weatherford		Weatherford, TX		76			1,942,229				5,728,977				7,671,206
	The 50/50		Lincoln, NE		475			—				32,820,776				32,820,776
	The Colonial		Omaha, NE		258			1,180,058				7,855,899				9,035,957
	Woodland Park		Topeka, KS		236			1,265,160				14,186,285				15,451,445
																120,017,162
	Less accumulated depreciation (depreciation expense of approximately $1.5 million in 2015)															(15,513,016		)
	Balance at March 31, 2015															$	104,504,146
	MF Properties
	Property Name		Location		Number of Units			Land and Land Improvements				Buildings and				Carrying Value at December 31, 2014
												Improvements
	Arboretum		Omaha, NE		145			$	1,748,502			$	19,216,623			$	20,965,125
	Eagle Village		Evansville, IN		511			567,880				12,472,151				13,040,031
	Glynn Place		Brunswick, GA		128			743,996				4,995,658				5,739,654
	Meadowview		Highland Heights, KY		224			688,539				5,479,342				6,167,881
	Residences of DeCordova		Granbury, TX		110			1,137,832				8,007,390				9,145,222
	Residences of Weatherford		Weatherford, TX		76			1,942,229				5,724,456				7,666,685
	The 50/50		Lincoln, NE		475			—				32,820,776				32,820,776
	The Colonial		Omaha, NE		258			1,180,058				7,822,681				9,002,739
	Woodland Park		Topeka, KS		236			1,265,160				14,167,096				15,432,256
																119,980,369
	Less accumulated depreciation (depreciation expense of approximately $4.8 million in 2014)															(14,108,154		)
	Balance at December 31, 2014															$	105,872,215

Other_Assets_Tables

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Other Assets [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	The following is a summary of the property loans receivable, accrued interest and loan loss reserves on the amounts due at March 31, 2015 and December 31, 2014, respectively:
		March 31, 2015
		Outstanding Balance			Accrued Interest			Loan Loss Reserves			Interest Allowance			Net Property Loans
	Arbors at Hickory Ridge	$	191,264		$	29,442		$	—		$	—		$	220,706
	Ashley Square	5,078,342			2,557,178			(3,596,342		)	(2,557,178		)	1,482,000
	Avistar (February 2013 portfolio)	274,496			25,199			—			—			299,695
	Avistar (June 2013 portfolio)	251,622			23,099			—			—			274,721
	Cross Creek	7,033,587			2,151,317			(3,447,472		)	(2,151,317		)	3,586,115
	Foundation for Affordable Housing	1,542,391			—			—			—			1,542,391
	Greens Property	850,000			258,376			—			—			1,108,376
	Lake Forest	4,618,704			2,716,910			(55,000		)	(2,696,076		)	4,584,538
	Ohio Properties	2,390,446			976,156			—			(340,093		)	3,026,509
		$	22,230,852		$	8,737,677		$	(7,098,814	)	$	(7,744,664	)	$	16,125,051
		December 31, 2014
		Outstanding Balance			Accrued Interest			Loan Loss Reserves			Interest Allowance			Net Property Loans
	Arbors at Hickory Ridge	$	191,264		$	26,047		$	—		$	—		$	217,311
	Ashley Square	5,078,342			2,455,660			(3,596,342		)	(2,455,660		)	1,482,000
	Avistar (February 2013 portfolio)	274,496			16,470			—			—			290,966
	Avistar (June 2013 portfolio)	251,622			15,097			—			—			266,719
	Cross Creek	6,976,087			2,084,804			(3,447,472		)	(2,084,804		)	3,528,615
	Foundation for Affordable Housing	1,560,553			1,735			—			—			1,562,288
	Greens Property	850,000			231,342			—			—			1,081,342
	Lake Forest	4,618,704			2,599,613			(55,000		)	(2,578,778		)	4,584,539
	Ohio Properties	2,390,447			894,044			—			(307,832		)	2,976,659
		$	22,191,515		$	8,324,812		$	(7,098,814	)	$	(7,427,074	)	$	15,990,439
Schedule of Other Assets [Table Text Block]	The Company had the following Other Assets as of dates shown:
		March 31, 2015			December 31, 2014
	Property loans receivable	$	22,230,852		$	22,191,515
	Less: Loan loss reserves	(7,098,814		)	(7,098,814		)
	Deferred financing costs - net	4,535,783			4,659,104
	Fair value of derivative contracts	523,151			267,669
	Taxable bonds at fair value	4,411,214			4,616,565
	Bond purchase commitments - fair value adjustment (Notes 4 & 14)	5,204,188			5,780,413
	Other assets	757,847			885,075
	Total Other assets	$	30,564,221		$	31,301,527
Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]	The following is a detail of loan loss reserves for the first quarter ended March 31, 2015 and year ended December 31, 2014:
		31-Mar-15			31-Dec-14
	Balance, beginning of year	$	7,098,814		$	7,023,814
	Provision for loan loss	—			75,000
	Balance, end of year	$	7,098,814		$	7,098,814

Debt_Financing_Tables

Debt Financing (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Financing [Abstract]
Schedule of Debt [Table Text Block]	Tender Option Bond Financings
		31-Mar-15
	Description of the Tender Option Bond Financings	Outstanding Debt Financing		Interest Rate		Stated Maturity
	PHC Certificates-TOB Trust	$	44,675,000	2.2	%	Jun-15
	MBS - TOB Trust 1	2,585,000		1.1	%	Apr-15
	MBS - TOB Trust 2	4,090,000		1.1	%	Apr-15
	MBS - TOB Trust 5	5,270,000		1.08	%	Apr-15
	The Suites on Paseo - TOB Trust	15,000,000		4.05	%	Nov-15
	TOB - Decatur Angle - TOB Trust	21,850,000		4.34	%	Oct-16
	Live 929 - TOB Trust	34,960,000		4.47	%	Jul-19
	Bruton Apartments - TOB Trust	17,250,000		4.55	%	Jul-17
	Pro Nova 2014-1 - TOB Trust	9,010,000		4.05	%	Jul-17
	Pro Nova 2014-2 - TOB Trust	9,010,000		4.05	%	Jul-17
	Concord at Gulfgate - TOB Trust	11,940,000		2.8	%	Feb-18
	Concord at Little York - TOB Trust	8,735,000		2.8	%	Feb-18
	Concord at Williamcrest - TOB Trust	12,610,000		2.8	%	Feb-18
	Total Debt Financing	$	196,985,000
		31-Dec-14
	Description of the Tender Option Bond Financings	Outstanding Debt Financing		Interest Rate		Stated Maturity
	PHC Certificates-TOB Trust	$	44,675,000	2.2	%	Jun-15
	MBS - TOB Trust 1	2,585,000		1.12	%	Apr-15
	MBS - TOB Trust 2	4,090,000		1.12	%	Apr-15
	MBS - TOB Trust 5	5,270,000		1.06	%	Apr-15
	The Suites on Paseo - TOB Trust	25,535,000		1.96	%	Jun-15
	TOB - Decatur Angle - TOB Trust	21,850,000		4.34	%	Oct-16
	Live 929 - TOB Trust	34,975,000		4.47	%	Jul-19
	Bruton Apartments - TOB Trust	17,250,000		4.55	%	Jul-17
	Pro Nova 2014-1 - TOB Trust	9,010,000		4.05	%	Jul-17
	Pro Nova 2014-2 - TOB Trust	9,010,000		4.05	%	Jul-17
	Total Debt Financing	$	174,250,000
Schedule of Maturities of Long-term Debt [Table Text Block]	The Company’s aggregate borrowings as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
	2015	$	84,172,098
	2016	24,872,528
	2017	143,627,104
	2018	1,217,740
	2019	125,418,023
	Thereafter	—
	Total	$	379,307,493
	The Company’s mortgages payable as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
	2015	$	9,130,349
	2016	24,265,268
	2017	13,581,274
	2018	3,968,570
	2019	25,499,990
	Thereafter	—
	Total	$	76,445,451
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]	Effective July 1, 2014, the Partnership transferred the following mortgage revenue bonds to the 2014 Sponsor pursuant to the M31 TEBS financing. The par value of the mortgage revenue bonds included in this financing facility as of March 31, 2015 and December 31, 2014 are as follows:
	Description of Mortgage Revenue Bonds	Outstanding Bond Par Amounts
		31-Mar-15		31-Dec-14			Financial Statement Presentation
	Arbors at Hickory Ridge	$	11,450,000	$	11,450,000		Mortgage revenue bond
	Avistar at Chase Hill A Bond	10,000,000		10,000,000			Mortgage revenue bond
	Avistar at the Crest A Bond	9,700,000		9,700,000			Mortgage revenue bond
	Avistar at the Oaks A Bond	7,800,000		7,800,000			Mortgage revenue bond
	Avistar in 09 A Bond	6,735,000		6,735,000			Mortgage revenue bond
	Avistar on the Boulevard A Bond	16,525,000		16,525,000			Mortgage revenue bond
	Avistar on the Hills A Bond	5,389,000		5,389,000			Mortgage revenue bond
	Copper Gate Apartments	5,220,000		5,220,000			Mortgage revenue bond
	Greens Property A Bond	8,348,000		8,366,000			Mortgage revenue bond
	Harden Ranch A Bond	6,960,000		6,960,000			Mortgage revenue bond
	The Palms at Premier Park Apartments	20,125,232		20,152,000			Mortgage revenue bond
	Tyler Park Apartments A Bond	6,075,000		6,075,000			Mortgage revenue bond
	Westside Village A Bond	3,970,000		3,970,000			Mortgage revenue bond
	Total	$	118,297,232	$	118,342,000
	The par value of the mortgage revenue bonds included in this financing facility as of March 31, 2015 and December 31, 2014 are as follows:
	Description of Mortgage Revenue Bonds	Outstanding Bond Par Amounts
		March 31, 2015		December 31, 2014			Financial Statement Presentation
	Ashley Square	$	5,144,000	$	5,159,000		Mortgage revenue bond
	Bella Vista	6,490,000		6,490,000			Mortgage revenue bond
	Bent Tree	7,444,000		7,465,000			Consolidated VIE
	Bridle Ridge	7,625,000		7,655,000			Mortgage revenue bond
	Brookstone	9,234,633		9,256,001			Mortgage revenue bond
	Cross Creek	8,403,534		8,422,997			Mortgage revenue bond
	Fairmont Oaks	7,242,000		7,266,000			Consolidated VIE
	Lake Forest	8,856,000		8,886,000			Mortgage revenue bond
	Runnymede	10,440,000		10,440,000			Mortgage revenue bond
	Southpark	13,680,000		13,680,000			Mortgage revenue bond
	Woodlynn Village	4,390,000		4,390,000			Mortgage revenue bond
	Ohio Series A Bond (1)	14,383,000		14,407,000			Mortgage revenue bond
	Total	$	103,332,167	$	103,516,998
	(1) Collateralized by Crescent Village, Postwoods, and Willow Bend (Note 2 and Note 9)

Mortgages_Payable_Tables

Mortgages Payable (Tables)	3 Months Ended
	Mar. 31, 2015
Mortgages Payable [Abstract]
Schedule of Maturities of Long-term Debt [Table Text Block]	The Company’s aggregate borrowings as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
	2015	$	84,172,098
	2016	24,872,528
	2017	143,627,104
	2018	1,217,740
	2019	125,418,023
	Thereafter	—
	Total	$	379,307,493
	The Company’s mortgages payable as of March 31, 2015 contractually mature over the next five years and thereafter as follows:
	2015	$	9,130,349
	2016	24,265,268
	2017	13,581,274
	2018	3,968,570
	2019	25,499,990
	Thereafter	—
	Total	$	76,445,451

Interest_Rate_Derivative_Agree1

Interest Rate Derivative Agreements (Tables)	3 Months Ended
	Mar. 31, 2015
Interest Rate Derivative Agreements [Abstract]
Schedule of Derivative Instruments [Table Text Block]	At March 31, 2015, the terms of the nine derivative agreements are as follows:
		Date Purchased	Notional Amount		Effective Capped Rate		Maturity Date	Purchase Price		Counterparty
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	921,000	Bank of New York Mellon
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	845,600	Barclays Bank PLC
		September 2, 2010	$	31,936,667	3	%	September 1, 2017	$	928,000	Royal Bank of Canada
		August 15, 2013	$	93,305,000	1.5	%	September 1, 2017	$	793,000	Deutsche Bank
		February 18, 2014	$	41,250,000	1	%	March 1, 2017	$	230,500	SMBC Capital Markets, Inc
		February 18, 2014	$	11,000,000	1	%	March 1, 2017	$	150,500	SMBC Capital Markets, Inc
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	315,200	Barclays Bank PLC
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	343,000	Royal Bank of Canada
		July 10, 2014	$	31,565,000	3	%	August 15, 2019	$	333,200	SMBC Capital Markets, Inc

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	Assets and liabilities measured at fair value on a recurring basis are summarized below:
			Fair Value Measurements at March 31, 2015
	Description		Assets at Fair Value				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
	Assets
	Mortgage Revenue Bonds		$	507,898,698			$	—			$	—			$	507,898,698
	Bond Purchase Commitment		5,204,188				—				—				5,204,188
	Public Housing Capital Fund Trust Certificates		60,272,941				—				—				60,272,941
	Mortgage-Backed Securities		14,884,339				—				14,884,339				—
	Taxable Mortgage Bonds		4,411,214				—				—				4,411,214
	Interest Rate Derivatives		(642,704		)		—				—				(642,704		)
	Total Assets at Fair Value		$	592,028,676			$	—			$	14,884,339			$	577,144,337
			For Three Months Ended March 31, 2015
			Fair Value Measurements Using Significant
			Unobservable Inputs (Level 3)
			Mortgage Revenue Bonds				Bond Purchase Commitment				Public Housing Capital Fund Trust Certificates				Taxable Bonds			Interest Rate Derivatives			Total
	Beginning Balance January 1, 2015		$	449,024,137			$	5,780,413			$	61,263,123			$	4,616,565		$	267,669		$	520,951,907
	Total gains (losses) (realized/unrealized)
	Included in earnings		—				—				—				—			(899,873		)	(899,873		)
	Included in other comprehensive income (loss)		74,600				(576,225		)		(976,532		)		(205,351		)	—			(1,683,508		)
	Purchases		58,945,000				—				—				—			—			58,945,000
	Refund of interest rate derivative cost		—				—				—				—			(10,500		)	(10,500		)
	Settlements		(145,039		)		—				(13,650		)		—			—			(158,689		)
	Ending Balance March 31, 2015		$	507,898,698			$	5,204,188			$	60,272,941			$	4,411,214		$	(642,704	)	$	577,144,337
	Total amount of losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of March 31, 2015		$	—			$	—			$	—			$	—		$	(899,873	)	$	(899,873	)
			Fair Value Measurements at December 31, 2014
	Description		Assets at Fair Value				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
	Assets
	Mortgage Revenue Bonds		$	449,024,137			$	—			$	—			$	449,024,137
	Bond Purchase Commitment		5,780,413				—				—				5,780,413
	Public Housing Capital Fund Trusts		61,263,123				—				—				61,263,123
	Mortgage-Backed Securities		14,841,558				—				14,841,558				—
	Taxable Mortgage Bonds		4,616,565				—				—				4,616,565
	Interest Rate Derivatives		267,669				—				—				267,669
	Total Assets at Fair Value		$	535,793,465			$	—			$	14,841,558			$	520,951,907
			For Three Months Ended March 31, 2014
			Fair Value Measurements Using Significant
			Unobservable Inputs (Level 3)
			Mortgage Revenue Bonds				Public Housing Capital Fund Trust Certificates				Taxable Bonds				Interest Rate Derivatives			Total
	Beginning Balance January 1, 2014		$	285,318,171			$	62,056,379			$	4,075,953			$	888,120		$	352,338,623
	Total gains (losses) (realized/unrealized)
	Included in earnings		—				—				—				(175,837		)	(175,837		)
	Included in other comprehensive loss		14,073,020				1,657,859				223,004				—			15,953,883
	Purchases		34,778,800				—				—				—			34,778,800
	Purchase interest rate derivative		—				—				—				391,500			391,500
	Mortgage revenue bond redemption		(17,636,138		)		—				—				—			(17,636,138		)
	Settlements		(62,126		)		(1,643,698		)		—				—			(1,705,824		)
	Ending Balance March 31, 2014		$	316,471,727			$	62,070,540			$	4,298,957			$	1,103,783		$	383,945,007
	Total amount of losses for the period included in earning attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of March 31, 2014		$	—			$	—			$	—			$	(175,837	)	$	(175,837	)
Fair Value, by Balance Sheet Grouping [Table Text Block]	This estimate of fair value is based on Level 3 inputs. The table below represents the fair value of the debt held on the balance sheet for March 31, 2015 and December 31, 2014, respectively.
		31-Mar-15								31-Dec-14
		Carrying Amount				Fair Value				Carrying Amount				Fair Value
	Financial Liabilities:
	Debt financing	$	379,307,493			$	380,751,539			$	345,359,000			$	346,813,909
	Mortgages payable	$	76,445,451			$	75,876,463			$	76,707,845			$	76,134,465

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	As of March 31, 2015 and December 31, 2014 the forward bond purchase commitments outstanding and the related fair values are as follows:
	Forward Bond Purchase Commitments	Date	Commitment Amount		Rate		Fair Value at March 31, 2015		Fair Value at December 31, 2014
	15 West Apartments	Jul-14	$	9,900,000	6.25	%	$	744,660	$	809,178
	Plano at Gateway Apartments	Dec-14	$	20,000,000	6	%	$	1,005,800	$	1,133,400
	Silver Moon Apartments	Jun-13	$	8,000,000	6	%	$	366,320	$	413,600
	Vantage at Harlingen - B bonds	Aug-13	$	18,000,000	6	%	$	1,278,900	$	1,433,700
	Vantage at Judson - B bonds	Dec-12	$	26,700,000	6	%	$	1,808,508	$	1,990,535

Segment_Reporting_Tables

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The following table details certain key financial information for the Company’s reportable segments for the three months ended March 31, 2015 and 2014:
		For the Three Months Ended,
		March 31, 2015			March 31, 2014
	Total revenues
	Mortgage Revenue Bond Investments	$	7,549,171		$	8,260,913
	MF Properties	4,302,301			3,150,344
	Public Housing Capital Fund Trust Certificates	732,903			800,828
	Mortgage-Backed Securities	152,860			421,160
	Consolidated VIEs	804,068			800,872
	Consolidation/eliminations	(230,610		)	(233,277		)
	Total revenues	$	13,310,693		$	13,200,840
	Interest expense
	Mortgage Revenue Bond Investments	$	2,947,100		$	1,149,922
	MF Properties	712,899			563,340
	Public Housing Capital Fund Trust Certificates	296,460			337,557
	Mortgage-Backed Securities	37,697			118,730
	Consolidated VIEs	569,934			557,884
	Consolidation/eliminations	(574,969		)	(557,884		)
	Total interest expense	$	3,989,121		$	2,169,549
	Depreciation expense
	Mortgage Revenue Bond Investments	$	—		$	—
	MF Properties	1,454,179			1,019,366
	Public Housing Capital Fund Trust Certificates	—			—
	Mortgage-Backed Securities	—			—
	Consolidated VIEs	239,120			232,781
	Consolidation/eliminations	—			—
	Total depreciation expense	$	1,693,299		$	1,252,147
	Net income (loss)
	Mortgage Revenue Bond Investments	$	2,520,116		$	5,628,100
	MF Properties	(393,641		)	(224,508		)
	Public Housing Capital Fund Trust Certificates	429,148			456,118
	Mortgage-Backed Securities	115,022			299,890
	Consolidated VIEs	(497,170		)	(444,098		)
	Consolidation/eliminations	351,004			331,327
	Net income - America First Multifamily Investors, L. P.	$	2,524,479		$	6,046,829
	The following table details certain key financial information for the Company’s reportable segments as of March 31, 2015 and December 31, 2014:
		31-Mar-15			31-Dec-14
	Total assets
	Mortgage Revenue Bond Investments	$	723,613,539		$	698,637,412
	MF Properties	111,632,020			101,696,234
	Public Housing Capital Fund Trusts	60,664,767			61,577,848
	Mortgage-Backed Securities	15,104,963			15,101,309
	Consolidated VIEs	13,169,000			13,456,861
	Consolidation/eliminations	(151,451,921		)	(146,230,447		)
	Total assets	$	772,732,368		$	744,239,217
	Total partners’ capital
	Mortgage Revenue Bond Investments	$	344,804,295		$	355,480,225
	MF Properties	(6,379,698		)	18,600,449
	Public Housing Capital Fund Trusts	15,890,718			16,803,457
	Mortgage-Backed Securities	3,105,324			3,095,526
	Consolidated VIEs	(23,996,786		)	(23,499,616		)
	Consolidation/eliminations	(30,196,628		)	(60,536,142		)
	Total partners’ capital	$	303,227,225		$	309,943,899

Basis_of_Presentation_Percenta

Basis of Presentation Percentage of Ownership (Details) (Consolidated Properties [Member])	Mar. 31, 2015
	properties
Number of Real Estate Properties	9
Limited Partner [Member]
Noncontrolling Interest, Ownership Percentage by Parent	99.00%
Number of Real Estate Properties	2

Partnership_Income_Expense_and1

Partnership Income, Expense and Cash Distributions Narrative Tagging (Details)	Mar. 31, 2015
Percent of Regular Distributions	100.00%
Penalty on Outstanding Contingent Interest	0.90%
Limited Partner [Member]
Percent of Regular Distributions	99.00%
Special Distribution	75.00%
General Partner [Member]
Percent of Regular Distributions	1.00%
Special Distribution	25.00%

Variable_Interest_Entities_Pro

Variable Interest Entities Property Asset Carrying Value and Maximum Exposure (Details) (USD $)	Mar. 31, 2015
Mortgage revenue bonds [Member]
Maximum Exposure to Loss	$67,088,064
Carrying Value	72,991,378
Property Loan [Member]
Maximum Exposure to Loss	11,221,635
Carrying Value	5,068,115
Ashley Square [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	5,144,000
Carrying Value	5,642,269
Ashley Square [Member] | Property Loan [Member]
Maximum Exposure to Loss	7,635,520
Carrying Value	1,482,000
Bruton Apts [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	18,145,000
Carrying Value	19,443,819
Bruton Apts [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Cross Creek [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	6,082,064
Carrying Value	8,547,448
Cross Creek [Member] | Property Loan [Member]
Maximum Exposure to Loss	3,586,115
Carrying Value	3,586,115
Glenview Apts [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	6,723,000
Carrying Value	6,855,286
Glenview Apts [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Harden Ranch [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	9,300,000
Carrying Value	9,920,953
Harden Ranch [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Montclair Apts [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	3,458,000
Carrying Value	3,606,478
Montclair Apts [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Santa Fe Apts [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	4,736,000
Carrying Value	4,856,631
Santa Fe Apts [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Tyler Park Apartments [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	8,100,000
Carrying Value	8,474,338
Tyler Park Apartments [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	0
Westside Village Market [Member] | Mortgage revenue bonds [Member]
Maximum Exposure to Loss	5,400,000
Carrying Value	5,644,156
Westside Village Market [Member] | Property Loan [Member]
Maximum Exposure to Loss	0
Carrying Value	$0

Variable_Interest_Entities_Con

Variable Interest Entities Consolidating Balance Sheet (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets [Abstract]
Cash and cash equivalents	$24,205,247	$49,193,343
Restricted cash	7,836,842	11,685,729
Interest receivable	5,806,290	4,121,486
Mortgage revenue bonds held in trust, at fair value	426,022,847	378,423,092
Mortgage revenue bonds, at fair value	81,875,851	70,601,045
Public housing capital fund trusts, at fair value	60,272,941	61,263,123
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	14,884,339	14,841,558
Real Estate Assets [Abstract]
Land and improvements	15,590,493	15,589,893
Buildings and improvements	132,000,442	131,910,221
Real estate assets before accumulated depreciation	147,590,935	147,500,114
Accumulated depreciation	-26,327,145	-24,691,800
Net real estate assets	121,263,790	122,808,314
Other assets	30,564,221	31,301,527
Assets	772,732,368	744,239,217
Liabilities [Abstract]
Accounts payable, accrued expenses and other liabilities	4,995,537	4,627,089
Distribution payable	7,607,693	7,617,390
Debt financing	379,307,493	345,359,000
Mortgages payable	76,445,451	76,707,834
Derivative Assets (Liabilities), at Fair Value, Net	1,165,855	0
Liabilities	469,522,029	434,311,313
Partners' Capital
General Partner	512,533	578,238
Beneficial Unit Certificate holders	323,952,314	330,457,117
Unallocated deficit of Consolidated VIEs	-21,237,622	-21,091,456
Total Partners' Capital	303,227,225	309,943,899
Noncontrolling interest	-16,886	-15,995
Total Capital	303,210,339	309,927,904	272,030,032	203,122,765
Total Liabilities and Partners' Capital	772,732,368	744,239,217
Partnership [Member]
Assets [Abstract]
Cash and cash equivalents	24,180,224	49,157,571
Restricted cash	7,350,135	11,141,496
Interest receivable	6,476,392	4,791,828
Mortgage revenue bonds held in trust, at fair value	442,029,721	394,568,208
Mortgage revenue bonds, at fair value	81,875,851	70,601,045
Public housing capital fund trusts, at fair value	60,272,941	61,263,123
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	14,884,339	14,841,558
Real Estate Assets [Abstract]
Land and improvements	13,754,093	13,753,493
Buildings and improvements	110,742,966	110,706,173
Real estate assets before accumulated depreciation	124,497,059	124,459,666
Accumulated depreciation	-15,513,016	-14,108,154
Net real estate assets	108,984,043	110,351,512
Other assets	41,298,994	41,958,914
Assets	787,352,640	758,675,255
Liabilities [Abstract]
Accounts payable, accrued expenses and other liabilities	4,623,103	4,123,346
Distribution payable	7,607,693	7,617,390
Debt financing	379,307,493	345,359,000
Mortgages payable	76,445,451	76,707,834
Derivative Assets (Liabilities), at Fair Value, Net	1,165,855
Liabilities	469,149,595	433,807,570
Partners' Capital
General Partner	512,533	578,238
Beneficial Unit Certificate holders	317,707,398	324,305,442
Unallocated deficit of Consolidated VIEs	0	0
Total Partners' Capital	318,219,931	324,883,680
Noncontrolling interest	-16,886	-15,995
Total Capital	318,203,045	324,867,685
Total Liabilities and Partners' Capital	787,352,640	758,675,255
Consolidated VIEs [Member]
Assets [Abstract]
Cash and cash equivalents	25,023	35,772
Restricted cash	486,707	544,233
Interest receivable	0	0
Mortgage revenue bonds held in trust, at fair value	0	0
Mortgage revenue bonds, at fair value	0	0
Public housing capital fund trusts, at fair value		0
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	0	0
Real Estate Assets [Abstract]
Land and improvements	1,836,400	1,836,400
Buildings and improvements	21,257,476	21,204,048
Real estate assets before accumulated depreciation	23,093,876	23,040,448
Accumulated depreciation	-10,814,129	-10,583,646
Net real estate assets	12,279,747	12,456,802
Other assets	377,523	420,054
Assets	13,169,000	13,456,861
Liabilities [Abstract]
Accounts payable, accrued expenses and other liabilities	22,479,786	22,225,477
Distribution payable	0	0
Debt financing	0	0
Mortgages payable	14,686,000	14,731,000
Derivative Assets (Liabilities), at Fair Value, Net	0
Liabilities	37,165,786	36,956,477
Partners' Capital
General Partner	0	0
Beneficial Unit Certificate holders	0	0
Unallocated deficit of Consolidated VIEs	-23,996,786	-23,499,616
Total Partners' Capital	-23,996,786	-23,499,616
Noncontrolling interest	0	0
Total Capital	-23,996,786	-23,499,616
Total Liabilities and Partners' Capital	13,169,000	13,456,861
Consolidations, Eliminations for VIEs [Member]
Assets [Abstract]
Cash and cash equivalents	0	0
Restricted cash	0	0
Interest receivable	-670,102	-670,342
Mortgage revenue bonds held in trust, at fair value	-16,006,874	-16,145,116
Mortgage revenue bonds, at fair value	0	0
Public housing capital fund trusts, at fair value		0
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	0	0
Real Estate Assets [Abstract]
Land and improvements	0	0
Buildings and improvements	0	0
Real estate assets before accumulated depreciation	0	0
Accumulated depreciation	0	0
Net real estate assets	0	0
Other assets	-11,112,296	-11,077,441
Assets	-27,789,272	-27,892,899
Liabilities [Abstract]
Accounts payable, accrued expenses and other liabilities	-22,107,352	-21,721,734
Distribution payable	0	0
Debt financing	0	0
Mortgages payable	-14,686,000	-14,731,000
Derivative Assets (Liabilities), at Fair Value, Net	0
Liabilities	-36,793,352	-36,452,734
Partners' Capital
General Partner	0	0
Beneficial Unit Certificate holders	6,244,916	6,151,675
Unallocated deficit of Consolidated VIEs	2,759,164	2,408,160
Total Partners' Capital	9,004,080	8,559,835
Noncontrolling interest	0	0
Total Capital	9,004,080	8,559,835
Total Liabilities and Partners' Capital	($27,789,272)	($27,892,899)

Variable_Interest_Entities_Con1

Variable Interest Entities Consolidating Income Statement (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues [Abstract]
Property revenues	$5,106,369	$3,951,216
Investment income	7,979,784	6,205,558
Gain on sale and retirement of bonds	0	2,835,243
Interest Income, Operating	224,540	208,823
Revenues	13,310,693	13,200,840
Expenses [Abstract]
Real estate operating (exclusive of items shown below)	2,958,605	2,100,293
Depreciation and amortization	2,031,898	1,613,346
Interest	3,989,121	2,169,549
General and administrative	1,807,481	1,270,926
Total expenses	10,787,105	7,154,114
Net income (loss)	2,523,588	6,046,726
Net income (loss) attributable to noncontrolling interest	-891	-103
Net income (loss) - America First Tax Exempt Investors, L.P.	2,524,479	6,046,829
Partnership [Member]
Revenues [Abstract]
Property revenues	4,302,301	3,150,344
Investment income	8,210,394	6,438,835
Gain on sale and retirement of bonds		2,835,243
Interest Income, Operating	224,540	208,823
Revenues	12,737,235	12,633,245
Expenses [Abstract]
Real estate operating (exclusive of items shown below)	2,471,030	1,650,647
Depreciation and amortization	1,794,814	1,382,626
Interest	3,994,156	2,169,549
General and administrative	1,807,481	1,270,926
Total expenses	10,067,481	6,473,748
Net income (loss)	2,669,754	6,159,497
Net income (loss) attributable to noncontrolling interest	-891	-103
Net income (loss) - America First Tax Exempt Investors, L.P.	2,670,645	6,159,600
Consolidated VIEs [Member]
Revenues [Abstract]
Property revenues	804,068	800,872
Investment income	0	0
Gain on sale and retirement of bonds		0
Interest Income, Operating	0	0
Revenues	804,068	800,872
Expenses [Abstract]
Real estate operating (exclusive of items shown below)	487,575	449,646
Depreciation and amortization	243,729	237,440
Interest	569,934	557,884
General and administrative	0	0
Total expenses	1,301,238	1,244,970
Net income (loss)	-497,170	-444,098
Net income (loss) attributable to noncontrolling interest	0	0
Net income (loss) - America First Tax Exempt Investors, L.P.	-497,170	-444,098
Consolidations, Eliminations for VIEs [Member]
Revenues [Abstract]
Property revenues	0	0
Investment income	-230,610	-233,277
Gain on sale and retirement of bonds		0
Interest Income, Operating	0	0
Revenues	-230,610	-233,277
Expenses [Abstract]
Real estate operating (exclusive of items shown below)	0	0
Depreciation and amortization	-6,645	-6,720
Interest	-574,969	-557,884
General and administrative	0	0
Total expenses	-581,614	-564,604
Net income (loss)	351,004	331,327
Net income (loss) attributable to noncontrolling interest	0	0
Net income (loss) - America First Tax Exempt Investors, L.P.	$351,004	$331,327

Variable_Interest_Entities_Nar

Variable Interest Entities Narrative Tagging (Details)	3 Months Ended
	Mar. 31, 2015
	properties
Available-for-Sale Securities, Ownership Percentage	100.00%
Number of Variable Interest Entities	11
Total Owners [Member]
Number of Owners	4
Related party owner [Member]
Number of Owners	2
Consolidated VIEs [Member]
Number of Variable Interest Entities	2
Unconsolidated Properties [Member]
Number of Variable Interest Entities	9

Investments_in_Mortgage_Revenu2

Investments in Mortgage Revenue Bonds Investments in Mortgage Revenue Bonds(Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	$386,280,003		$338,861,752
Cost adjusted for pay-downs	76,919,779		65,538,068
Unrealized Gain, held in trust	39,742,844		39,561,340
Unrealized Gain	4,973,588		5,082,559
Unrealized Loss, held in trust	0		0
Unrealized Loss	-17,516		-19,582
Estimated Fair Value, held in trust	426,022,847		378,423,092
Estimated Fair Value	81,875,851		70,601,045
Arbors at Hickory Ridge [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	11,569,614	[1]	11,570,933	[1]
Unrealized Gain, held in trust	1,239,453	[1]	1,792,303	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	12,809,067	[1]	13,363,236	[1]
Ashley Square [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	5,144,000	[2]	5,159,000	[2]
Unrealized Gain, held in trust	498,269	[2]	486,559	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	5,642,269	[2]	5,645,559	[2]
Avistar on the Hills [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust			5,389,000	[1]
Unrealized Gain, held in trust			743,520	[1]
Unrealized Loss, held in trust			0	[1]
Estimated Fair Value, held in trust			6,132,520	[1]
Bella Vista [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	6,490,000	[2]	6,490,000	[2]
Unrealized Gain, held in trust	573,067	[2]	625,571	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	7,063,067	[2]	7,115,571	[2]
Bridle Ridge [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	7,625,000	[2]	7,655,000	[2]
Unrealized Gain, held in trust	595,665	[2]	659,249	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	8,220,665	[2]	8,314,249	[2]
Brookstone [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	7,469,357	[2]	7,468,888	[2]
Unrealized Gain, held in trust	1,652,619	[2]	1,360,589	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	9,121,976	[2]	8,829,477	[2]
Bruton Apts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust			18,145,000	[3]
Unrealized Gain, held in trust			1,455,955	[3]
Unrealized Loss, held in trust			0	[3]
Estimated Fair Value, held in trust			19,600,955	[3]
Bruton Apartments [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	18,145,000	[3]
Unrealized Gain, held in trust	1,298,819	[3]
Unrealized Loss, held in trust	0	[3]
Estimated Fair Value, held in trust	19,443,819	[3]
Glenview Apts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	6,723,000		6,723,000
Unrealized Gain	132,286		0
Unrealized Loss	0		0
Estimated Fair Value	6,855,286		6,723,000
Copper Gate [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	5,220,000	[1]	5,220,000	[1]
Unrealized Gain, held in trust	390,143	[1]	563,656	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	5,610,143	[1]	5,783,656	[1]
Cross Creek [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	6,082,064	[2]	6,074,817	[2]
Unrealized Gain, held in trust	2,465,384	[2]	2,542,262	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	8,547,448	[2]	8,617,079	[2]
Decatur-Angle [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	23,000,000	[3]	23,000,000	[3]
Unrealized Gain, held in trust	727,260	[3]	919,540	[3]
Unrealized Loss, held in trust	0	[3]	0	[3]
Estimated Fair Value, held in trust	23,727,260	[3]	23,919,540	[3]
Heritage Square [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	11,705,000		11,705,000
Unrealized Gain	295,073		1,109,125
Unrealized Loss	0		0
Estimated Fair Value	12,000,073		12,814,125
Montclair Apts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	3,458,000		3,458,000
Unrealized Gain	148,478		0
Unrealized Loss	0		0
Estimated Fair Value	3,606,478		3,458,000
Lake Forest [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	8,856,000	[2]	8,886,000	[2]
Unrealized Gain, held in trust	1,037,354	[2]	1,003,614	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	9,893,354	[2]	9,889,614	[2]
Live 929 Apartments [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	40,874,690	[3]	40,895,739	[3]
Unrealized Gain, held in trust	4,154,777	[3]	3,797,745	[3]
Unrealized Loss, held in trust	0	[3]	0	[3]
Estimated Fair Value, held in trust	45,029,467	[3]	44,693,484	[3]
Pro Nova [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	20,092,423	[3]	20,095,169	[3]
Unrealized Gain, held in trust	889,777	[3]	1,043,431	[3]
Unrealized Loss, held in trust	0	[3]	0	[3]
Estimated Fair Value, held in trust	20,982,200	[3]	21,138,600	[3]
Rennaisance [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	12,675,000		12,675,000
Unrealized Gain	762,823		1,055,807
Unrealized Loss	0		0
Estimated Fair Value	13,437,823		13,730,807
Santa Fe Apts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	4,736,000		4,736,000
Unrealized Gain	120,631		0
Unrealized Loss	0		0
Estimated Fair Value	4,856,631		4,736,000
Runnymede [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	10,440,000	[2]	10,440,000	[2]
Unrealized Gain, held in trust	1,297,483	[2]	1,385,910	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	11,737,483	[2]	11,825,910	[2]
Southpark [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	11,861,623	[2]	11,842,206	[2]
Unrealized Gain, held in trust	3,599,239	[2]	3,743,692	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	15,460,862	[2]	15,585,898	[2]
The Palms at Premier Park [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	20,125,232	[1]	20,152,000	[1]
Unrealized Gain, held in trust	2,005,005	[1]	2,680,619	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	22,130,237	[1]	22,832,619	[1]
The Suites on Paseo [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	35,450,000	[3]	35,450,000	[3]
Unrealized Gain, held in trust	2,901,583	[3]	3,193,691	[3]
Unrealized Loss, held in trust	0	[3]	0	[3]
Estimated Fair Value, held in trust	38,351,583	[3]	38,643,691	[3]
Vantage at Harlingen [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	6,692,000		6,692,000
Unrealized Gain	260,386		707,813
Unrealized Loss	0		0
Estimated Fair Value	6,952,386		7,399,813
Vantage at Judson [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	6,049,000		6,049,000
Unrealized Gain	485,432		717,230
Unrealized Loss	0		0
Estimated Fair Value	6,534,432		6,766,230
Woodlynn Village [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	4,390,000	[2]	4,390,000	[2]
Unrealized Gain, held in trust	244,962	[2]	376,706	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	4,634,962	[2]	4,766,706	[2]
Series A [Member] | Avistar at Chase Hill [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	10,000,000	[1]	10,000,000	[1]
Unrealized Gain, held in trust	1,226,837	[1]	1,196,800	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	11,226,837	[1]	11,196,800	[1]
Series A [Member] | Avistar at the Crest [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	9,700,000	[1]	9,700,000	[1]
Unrealized Gain, held in trust	1,054,230	[1]	1,419,692	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	10,754,230	[1]	11,119,692	[1]
Series A [Member] | Avistar at the Oaks [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	7,800,000	[1]	7,800,000	[1]
Unrealized Gain, held in trust	802,611	[1]	869,622	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	8,602,611	[1]	8,669,622	[1]
Series A [Member] | Avistar in 09 [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	6,735,000	[1]	6,735,000	[1]
Unrealized Gain, held in trust	787,493	[1]	750,885	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	7,522,493	[1]	7,485,885	[1]
Series A [Member] | Avistar on the Boulevard [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	16,525,000	[1]	16,525,000	[1]
Unrealized Gain, held in trust	1,795,997	[1]	2,418,599	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	18,320,997	[1]	18,943,599	[1]
Series A [Member] | Avistar on the Hills [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	5,389,000	[1]
Unrealized Gain, held in trust	554,521	[1]
Unrealized Loss, held in trust	0	[1]
Estimated Fair Value, held in trust	5,943,521	[1]
Series A [Member] | Concord at Gulfgate [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	17,060,000	[3]
Cost adjusted for pay-downs	17,100,000
Unrealized Gain, held in trust	1,417,004	[3]
Unrealized Loss, held in trust	0	[3]
Estimated Fair Value, held in trust	18,477,004	[3]
Series A [Member] | Concord at Little York [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	12,480,000	[3]
Cost adjusted for pay-downs	12,500,000
Unrealized Gain, held in trust	820,061	[3]
Unrealized Loss, held in trust	0	[3]
Estimated Fair Value, held in trust	13,300,061	[3]
Series A [Member] | Concord at Williamcrest [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	18,020,000	[3]
Cost adjusted for pay-downs	18,000,000
Unrealized Gain, held in trust	1,184,094	[3]
Unrealized Loss, held in trust	0	[3]
Estimated Fair Value, held in trust	19,204,094	[3]
Series A [Member] | Greens of Pine Glen [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	8,348,000	[1]	8,366,000	[1]
Unrealized Gain, held in trust	943,736	[1]	1,005,119	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	9,291,736	[1]	9,371,119	[1]
Series A [Member] | Harden Ranch [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	6,960,000	[1]	6,960,000	[1]
Unrealized Gain, held in trust	623,129	[1]	511,421	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	7,583,129	[1]	7,471,421	[1]
Series A [Member] | Ohio Properties [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	14,383,000	[2]	14,407,000	[2]
Unrealized Gain, held in trust	2,328,438	[2]	2,444,034	[2]
Unrealized Loss, held in trust	0	[2]	0	[2]
Estimated Fair Value, held in trust	16,711,438	[2]	16,851,034	[2]
Series A [Member] | Tyler Park Apartments [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	6,075,000	[1]	6,075,000	[1]
Unrealized Gain, held in trust	383,329	[1]	345,060	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	6,458,329	[1]	6,420,060	[1]
Series A [Member] | Westside Village Market [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs, held in trust	3,970,000	[1]	3,970,000	[1]
Unrealized Gain, held in trust	250,505	[1]	225,496	[1]
Unrealized Loss, held in trust	0	[1]	0	[1]
Estimated Fair Value, held in trust	4,220,505	[1]	4,195,496	[1]
Series B [Member] | Avistar at Chase Hill [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	965,000		965,000
Unrealized Gain	88,486		144,769
Unrealized Loss	0		0
Estimated Fair Value	1,053,486		1,109,769
Series B [Member] | Avistar at the Crest [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	759,000		759,000
Unrealized Gain	69,600		124,286
Unrealized Loss	0		0
Estimated Fair Value	828,600		883,286
Series B [Member] | Avistar at the Oaks [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	554,000		554,000
Unrealized Gain	50,841		54,325
Unrealized Loss	0		0
Estimated Fair Value	604,841		608,325
Series B [Member] | Avistar in 09 [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	457,000		457,000
Unrealized Gain	41,939		50,608
Unrealized Loss	0		0
Estimated Fair Value	498,939		507,608
Series B [Member] | Avistar on the Boulevard [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	451,000		451,000
Unrealized Gain	41,357		73,851
Unrealized Loss	0		0
Estimated Fair Value	492,357		524,851
Series B [Member] | Concord at Gulfgate [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	2,125,000
Unrealized Gain	592,323
Unrealized Loss	0
Estimated Fair Value	2,717,323
Series B [Member] | Concord at Little York [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	960,000
Unrealized Gain	252,586
Unrealized Loss	0
Estimated Fair Value	1,212,586
Series B [Member] | Concord at Williamcrest [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	2,800,000
Unrealized Gain	736,708
Unrealized Loss	0
Estimated Fair Value	3,536,708
Series B [Member] | Greens of Pine Glen [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	945,059		945,638
Unrealized Gain	249,820		376,203
Unrealized Loss	0		0
Estimated Fair Value	1,194,879		1,321,841
Series B [Member] | Harden Ranch [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	2,340,000		2,340,000
Unrealized Gain	0		0
Unrealized Loss	-2,176		-1,501
Estimated Fair Value	2,337,824		2,338,499
Series B [Member] | Ohio Properties [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	3,570,720		3,573,430
Unrealized Gain	644,819		668,542
Unrealized Loss	0		0
Estimated Fair Value	4,215,539		4,241,972
Series B [Member] | The Suites on Paseo [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	5,500,000
Unrealized Gain	0
Unrealized Loss	0
Estimated Fair Value	5,500,000
Series B [Member] | Tyler Park Apartments [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	2,025,000		2,025,000
Unrealized Gain	0		0
Unrealized Loss	-8,991		-17,395
Estimated Fair Value	2,016,009		2,007,605
Series B [Member] | Westside Village Market [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for pay-downs	1,430,000		1,430,000
Unrealized Gain	0		0
Unrealized Loss	-6,349		-686
Estimated Fair Value	$1,423,651		$1,429,314
[1]	Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9
[2]	Mortgage revenue bonds owned by ATAX TEBS I, LLC, Note 9
[3]	Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9

Investments_in_Mortgage_Revenu3

Investments in Mortgage Revenue Bonds Narrative Tagging (Details) (USD $)	3 Months Ended			6 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Jun. 30, 2014	Dec. 31, 2014
	Integer
Payments to Acquire Available-for-sale Securities	$58,945,000		$34,778,800
Number of Available for Sale Securities	57
Loans Payable	16,125,051				15,990,439
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	386,280,003				338,861,752
Cost adjusted for pay-downs	76,919,779				65,538,068
Available-For-Sale Securities, Gross Unrealized Loss MTM	17,516				19,582
Mortgage revenue bonds held in trust, at fair value	426,022,847				378,423,092
Proceeds from Sale of Available-for-sale Securities	0		18,744,294
Available-for-sale Securities, Gross Realized Gain (Loss)			-1,743,088
Debt financing	379,307,493				345,359,000
Adverse change rate	10.00%
10% unrealized loss	32,600,000
Concord at Gulfgate [Member]
Number of Units in Real Estate Property	288
Heritage Square [Member]
Cost adjusted for pay-downs	11,705,000				11,705,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Bruton Apartments [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	18,145,000	[1]
Mortgage revenue bonds held in trust, at fair value	19,443,819	[1]
Live 929 Apartments [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	40,874,690	[1]			40,895,739	[1]
Mortgage revenue bonds held in trust, at fair value	45,029,467	[1]			44,693,484	[1]
Decatur-Angle [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	23,000,000	[1]			23,000,000	[1]
Mortgage revenue bonds held in trust, at fair value	23,727,260	[1]			23,919,540	[1]
Lost Creek [Member]
Proceeds from Sale of Available-for-sale Securities				18,700,000
Copper Gate [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	5,220,000	[2]			5,220,000	[2]
Mortgage revenue bonds held in trust, at fair value	5,610,143	[2]			5,783,656	[2]
The Palms at Premier Park [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	20,125,232	[2]			20,152,000	[2]
Mortgage revenue bonds held in trust, at fair value	22,130,237	[2]			22,832,619	[2]
The Suites on Paseo [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	35,450,000	[1]			35,450,000	[1]
Mortgage revenue bonds held in trust, at fair value	38,351,583	[1]			38,643,691	[1]
Vantage at Harlingen [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Cost adjusted for pay-downs	6,692,000				6,692,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Greens of Pine Glen [Member]
Loans Payable	1,108,376				1,081,342
Rennaisance [Member]
Cost adjusted for pay-downs	12,675,000				12,675,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Avistar Portfolio [Member]
Loans Payable	299,695				290,966
Vantage at Judson [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Cost adjusted for pay-downs	6,049,000				6,049,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Concord at Little York [Member]
Number of Units in Real Estate Property	276
Concord at Williamcrest [Member]
Number of Units in Real Estate Property	288
Concord Portfolio [Member]
TOB Financing	33,300,000
Number of Available for Sale Securities, Held in a Trust	3
Series A [Member] | Concord at Gulfgate [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	17,060,000	[1]
Cost adjusted for pay-downs	17,100,000
Mortgage revenue bonds held in trust, at fair value	18,477,004	[1]
Series A [Member] | Harden Ranch [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	6,960,000	[2]			6,960,000	[2]
Mortgage revenue bonds held in trust, at fair value	7,583,129	[2]			7,471,421	[2]
Series A [Member] | Tyler Park Apartments [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	6,075,000	[2]			6,075,000	[2]
Mortgage revenue bonds held in trust, at fair value	6,458,329	[2]			6,420,060	[2]
Series A [Member] | Westside Village Market [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	3,970,000	[2]			3,970,000	[2]
Mortgage revenue bonds held in trust, at fair value	4,220,505	[2]			4,195,496	[2]
Series A [Member] | Greens of Pine Glen [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	8,348,000	[2]			8,366,000	[2]
Mortgage revenue bonds held in trust, at fair value	9,291,736	[2]			9,371,119	[2]
Series A [Member] | Avistar on the Boulevard [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	16,525,000	[2]			16,525,000	[2]
Mortgage revenue bonds held in trust, at fair value	18,320,997	[2]			18,943,599	[2]
Series A [Member] | Avistar at Chase Hill [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	10,000,000	[2]			10,000,000	[2]
Mortgage revenue bonds held in trust, at fair value	11,226,837	[2]			11,196,800	[2]
Series A [Member] | Avistar at the Crest [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	9,700,000	[2]			9,700,000	[2]
Mortgage revenue bonds held in trust, at fair value	10,754,230	[2]			11,119,692	[2]
Series A [Member] | Concord at Little York [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	12,480,000	[1]
Cost adjusted for pay-downs	12,500,000
Mortgage revenue bonds held in trust, at fair value	13,300,061	[1]
Series A [Member] | Concord at Williamcrest [Member]
Available-for-sale Securities, Amortized Cost Basis, Held in Trust	18,020,000	[1]
Cost adjusted for pay-downs	18,000,000
Mortgage revenue bonds held in trust, at fair value	19,204,094	[1]
Series A [Member] | Concord Portfolio [Member]
Debt Instrument, Maturity Date	1-Feb-32
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Series B [Member] | Concord at Gulfgate [Member]
Cost adjusted for pay-downs	2,125,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0
Series B [Member] | Harden Ranch [Member]
Cost adjusted for pay-downs	2,340,000				2,340,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	2,176				1,501
Series B [Member] | Tyler Park Apartments [Member]
Cost adjusted for pay-downs	2,025,000				2,025,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	8,991				17,395
Series B [Member] | Westside Village Market [Member]
Cost adjusted for pay-downs	1,430,000				1,430,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	6,349				686
Series B [Member] | The Suites on Paseo [Member]
Mortgage revenue bonds, at fair value	35,600,000
Cost adjusted for pay-downs	5,500,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0
Series B [Member] | Greens of Pine Glen [Member]
Cost adjusted for pay-downs	945,059				945,638
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Series B [Member] | Avistar on the Boulevard [Member]
Cost adjusted for pay-downs	451,000				451,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Series B [Member] | Avistar at Chase Hill [Member]
Cost adjusted for pay-downs	965,000				965,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Series B [Member] | Avistar at the Crest [Member]
Cost adjusted for pay-downs	759,000				759,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0				0
Series B [Member] | Concord at Little York [Member]
Cost adjusted for pay-downs	960,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0
Series B [Member] | Concord at Williamcrest [Member]
Cost adjusted for pay-downs	2,800,000
Available-For-Sale Securities, Gross Unrealized Loss MTM	0
Series B [Member] | Concord Portfolio [Member]
Debt Instrument, Maturity Date	1-Mar-32
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Minimum [Member] | Woodlynn Village and Avistar at the Crest [Member]
Unrealized Loss Position for Available-for-sale Securities	12 months
Effective rate - maximum [Member]
Effective rate	9.60%				8.30%
Effective rate - minimum [Member]
Effective rate	4.80%				4.70%
10% adverse [Member] | Effective rate - maximum [Member]
Effective rate	10.50%
10% adverse [Member] | Effective rate - minimum [Member]
Effective rate	5.20%
TOB Facility-1 [Member]
Debt, Weighted Average Interest Rate	1.10%
Mortgage revenue bonds [Member]
Debt, Weighted Average Interest Rate	6.00%
Number of Units in Real Estate Property	7,379
Trading Securities [Member]
Debt financing	$196,985,000				$174,250,000
CALIFORNIA
Percentage of Available for Sale Securities by Location	19.00%				18.00%
TEXAS
Percentage of Available for Sale Securities by Location	45.00%				38.00%
[1]	Mortgage revenue bonds held by Deutsche Bank in a secured financing transaction, Note 9
[2]	Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9

Public_Housing_Capital_Fund_Tr2

Public Housing Capital Fund Trusts Narrative Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities	$202,888	$1,778,734
Available for Sale Securities, not Including Premiums			59,308,398
Available-for-Sale Securities, Ownership Percentage	100.00%
Adverse change rate	10.00%
Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt, Weighted Average Interest Rate	5.00%
Number of Available for Sale Securities, Public Housing Authorities	3
Available for Sale Securities, not Including Premiums	59,308,398
Unrealized Loss	-85,487		0
LIFERS [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale Securities, Ownership Percentage	100.00%
Effective rate - minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	4.80%		4.70%
Effective rate - minimum [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	4.20%
Effective rate - maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	9.60%		8.30%
Effective rate - maximum [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	5.40%
10% adverse [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized Loss	$2,300,000
10% adverse [Member] | Effective rate - minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	5.20%
10% adverse [Member] | Effective rate - minimum [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	4.90%
10% adverse [Member] | Effective rate - maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	10.50%
10% adverse [Member] | Effective rate - maximum [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Effective rate	6.30%

Public_Housing_Capital_Fund_Tr3

Public Housing Capital Fund Trusts Information Table on Public Housing Capital Fund Trusts (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Principal Outstanding September 30, 2012		$59,308,398
Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt, Weighted Average Interest Rate	5.00%
Principal Outstanding September 30, 2012	59,308,398
Standard & Poor's, AA- Rating [Member] | Public Housing Capital Fund Trust I [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	10 years 0 months 0 days	10 years 3 months 0 days
Investment Rating	AA-	AA-
Debt, Weighted Average Interest Rate	5.30%	5.33%
Principal Outstanding September 30, 2012	25,980,780	25,980,780
Standard & Poor's, A+ Rating [Member] | Public Housing Capital Fund Trust II [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	9 years 5 months 20 days	9 years 8 months 20 days
Investment Rating	A+	A+
Debt, Weighted Average Interest Rate	4.28%	4.28%
Principal Outstanding September 30, 2012	12,429,186	12,429,186
Standard & Poor's, BBB Rating [Member] | Public Housing Capital Fund Trust III [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	10 years 6 months 22 days	10 years 9 months 21 days
Investment Rating	BBB	BBB
Debt, Weighted Average Interest Rate	5.42%	5.42%
Principal Outstanding September 30, 2012	$20,898,432	$20,898,432

Public_Housing_Capital_Fund_Tr4

Public Housing Capital Fund Trusts Mark to Market PHC (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	$60,272,941	$61,263,123
Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for amortization of premium and discounts	59,874,268	59,887,921
Unrealized Gain	484,160	1,375,202
Unrealized Loss	-85,487	0
Estimated Fair Value	60,272,941	61,263,123
Public Housing Capital Fund Trust I [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for amortization of premium and discounts	27,379,187	27,414,100
Unrealized Gain	484,160	933,789
Unrealized Loss	0	0
Estimated Fair Value	27,863,347	28,347,889
Public Housing Capital Fund Trust II [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for amortization of premium and discounts	12,011,169	11,999,721
Unrealized Gain	0	152,293
Unrealized Loss	-40,868	0
Estimated Fair Value	11,970,301	12,152,014
Public Housing Capital Fund Trust III [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost adjusted for amortization of premium and discounts	20,483,912	20,474,100
Unrealized Gain	0	289,120
Unrealized Loss	-44,619	0
Estimated Fair Value	$20,439,293	$20,763,220

MortgageBacked_Securities_Term

Mortgage-Backed Securities Terms of MBS (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available for Sale Securities, not Including Premiums			59,308,398
Trust Portfolio--MBS Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for Sale Securities, not Including Premiums	14,765,000
Standard & Poor's, AAA Rating [Member] | Trust Portfolio--MBS Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Instrument, Credit Rating	bAAAb	[1]	bAAAb	[1]
Available for Sale Securities, not Including Premiums	5,000,000
Debt Instrument, Weighted Average Maturity Date	1-Jul-32
Debt, Weighted Average Interest Rate	4.60%
Standard & Poor's, AA Rating [Member] | Trust Portfolio--MBS Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Instrument, Credit Rating	bAAb	[1]	bAAb	[1]
Available for Sale Securities, not Including Premiums	$9,765,000
Debt Instrument, Weighted Average Maturity Date	9-Jul-36
Debt, Weighted Average Interest Rate	4.20%
[1]	(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.

MortgageBacked_Securities_Carr

Mortgage-Backed Securities Carrying Value of Asset (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$76,919,779		$65,538,068
Unrealized Gain	4,973,588		5,082,559
Unrealized Loss	-17,516		-19,582
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	14,884,339		14,841,558
Trust Portfolio--MBS Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	15,360,376		15,367,641
Unrealized Gain	0		0
Unrealized Loss	-476,037		-526,083
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	14,884,339		14,841,558
Trust Portfolio--MBS Bonds [Member] | Standard & Poor's, AAA Rating [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Instrument, Credit Rating	bAAAb	[1]	bAAAb	[1]
Available-for-sale Securities, Amortized Cost Basis	5,300,637	[1]	5,304,974	[1]
Unrealized Gain	0	[1]	0	[1]
Unrealized Loss	-251,537	[1]	-250,624	[1]
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	5,049,100	[1]	5,054,350	[1]
Trust Portfolio--MBS Bonds [Member] | Standard & Poor's, AA Rating [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Instrument, Credit Rating	bAAb	[1]	bAAb	[1]
Available-for-sale Securities, Amortized Cost Basis	10,059,739	[1]	10,062,667	[1]
Unrealized Gain	0	[1]	0	[1]
Unrealized Loss	-224,500	[1]	-275,459	[1]
Available-for-sale Securities, Fair Value Disclosure, Mortgage-backed Securities	$9,835,239	[1]	$9,787,208	[1]
[1]	(1) MBS are reported based on the lowest rating issued by a Rating Agency, if more than one rating is issued on the security, at the date presented.

MortgageBacked_Securities_Narr

Mortgage-Backed Securities Narrative Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Tolerable Range of Difference in Valuation	0.00%
Adverse change rate	10.00%
Unrealized Loss	($17,516)	($19,582)
Available for Sale Securities, not Including Premiums		59,308,398
Effective rate - minimum [Member]
Effective rate	4.80%	4.70%
Effective rate - maximum [Member]
Effective rate	9.60%	8.30%
Trust Portfolio--MBS Bonds [Member]
Adverse change rate	10.00%
Unrealized Loss	-476,037	-526,083
Number of Available for Sale Securities, Mortgage Backed Securities	3
Available for Sale Securities, not Including Premiums	14,765,000
Trust Portfolio--MBS Bonds [Member] | Effective rate - minimum [Member]
Effective rate	3.60%	3.70%
Trust Portfolio--MBS Bonds [Member] | Effective rate - maximum [Member]
Effective rate	5.20%	5.20%
10% adverse [Member] | Effective rate - minimum [Member]
Effective rate	5.20%
10% adverse [Member] | Effective rate - maximum [Member]
Effective rate	10.50%
10% adverse [Member] | Trust Portfolio--MBS Bonds [Member]
Available-for-sale Securities, Gross Unrealized Loss	801,000
10% adverse [Member] | Trust Portfolio--MBS Bonds [Member] | Effective rate - minimum [Member]
Effective rate	4.00%
10% adverse [Member] | Trust Portfolio--MBS Bonds [Member] | Effective rate - maximum [Member]
Effective rate	5.80%
LIFERS [Member] | Trust Portfolio--MBS Bonds [Member]
Available for Sale Securities, not Including Premiums	2,800,000
SPEARS [Member] | Trust Portfolio--MBS Bonds [Member]
TOB Financing	$11,900,000

Real_Estate_Assets_Fair_Value_

Real Estate Assets Fair Value of Acquisition (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Real estate assets	$121,263,790	$122,808,314
Total assets	772,732,368	744,239,217
Accounts payable, accrued expenses and other liabilities	4,995,537	4,627,089
Partners' Capital	303,227,225	309,943,899
Total Liabilities and Partners' Capital	$772,732,368	$744,239,217

Real_Estate_Assets_Business_Co

Real Estate Assets Business Combination, Proforma Income Statement (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net income (loss) allocated to unitholders	$2,643,939	$5,417,545
Unitholders' interest in net income (loss) per unit (basic and diluted)	$0.04	$0.10

Real_Estate_Assets_MF_Properti

Real Estate Assets MF Properties (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land and improvements	$15,590,493	$15,589,893
Buildings and improvements	132,000,442	131,910,221
Carrying Value at September 30, 2012	147,590,935	147,500,114
MF Property, Plant and Equipment	120,017,162	119,980,369
Accumulated Depreciation - MF Properties	-15,513,016	-14,108,154
Property, Plant and Equipment, Net	104,504,146	105,872,215
Arboretum [Member]
Property, Plant and Equipment [Line Items]
Number of Units	145	145
Land and improvements	1,748,502	1,748,502
Buildings and improvements	19,228,701	19,216,623
Carrying Value at September 30, 2012	20,977,203	20,965,125
Eagle Village [Member]
Property, Plant and Equipment [Line Items]
Number of Units	511	511
Land and improvements	567,880	567,880
Buildings and improvements	12,479,357	12,472,151
Carrying Value at September 30, 2012	13,047,237	13,040,031
Glynn Place [Member]
Property, Plant and Equipment [Line Items]
Number of Units	128	128
Land and improvements	743,996	743,996
Buildings and improvements	4,945,091	4,995,658
Carrying Value at September 30, 2012	5,689,087	5,739,654
Maples on 97th [Member]
Property, Plant and Equipment [Line Items]
Number of Units	258	258
Land and improvements	1,180,058	1,180,058
Buildings and improvements	7,855,899	7,822,681
Carrying Value at September 30, 2012	9,035,957	9,002,739
Meadowview [Member]
Property, Plant and Equipment [Line Items]
Number of Units	230	224
Land and improvements	688,539	688,539
Buildings and improvements	5,482,068	5,479,342
Carrying Value at September 30, 2012	6,170,607	6,167,881
Residences at DeCordova [Member]
Property, Plant and Equipment [Line Items]
Number of Units	110	110
Land and improvements	1,137,832	1,137,832
Buildings and improvements	8,015,812	8,007,390
Carrying Value at September 30, 2012	9,153,644	9,145,222
Residences at Weatherford [Member]
Property, Plant and Equipment [Line Items]
Number of Units	76	76
Land and improvements	1,942,229	1,942,229
Buildings and improvements	5,728,977	5,724,456
Carrying Value at September 30, 2012	7,671,206	7,666,685
The 50/50 Student Housing--UNL [Member]
Property, Plant and Equipment [Line Items]
Number of Units	475	475
Land and improvements	0	0
Buildings and improvements	32,820,776	32,820,776
Carrying Value at September 30, 2012	32,820,776	32,820,776
Woodland Park [Member]
Property, Plant and Equipment [Line Items]
Number of Units	236	236
Land and improvements	1,265,160	1,265,160
Buildings and improvements	14,186,285	14,167,096
Carrying Value at September 30, 2012	$15,451,445	$15,432,256

Real_Estate_Assets_Parenthetic

Real Estate Assets Parenthetical for Depreciation Expense (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$1,693,299	$1,252,147
Consolidated Entities [Member]
Property, Plant and Equipment [Line Items]
Depreciation	1,500,000		4,800,000
Consolidated VIEs [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$239,000		$940,000

Real_Estate_Assets_Variable_In

Real Estate Assets Variable Interest Entities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land and improvements	$15,590,493	$15,589,893
Buildings and improvements	132,000,442	131,910,221
Carrying Value at September 30, 2012	147,590,935	147,500,114
VIE Property, Plant and Equipment, Gross	23,093,876	23,040,448
Accumulated Depreciation - VIES	-10,814,129	-10,583,646
VIE Property Property, Plant and Equipment, Net	12,279,747	12,456,802
Bent Tree [Member]
Property, Plant and Equipment [Line Items]
Number of Units	232	232
Land and improvements	986,000	986,000
Buildings and improvements	12,348,139	12,303,982
Carrying Value at September 30, 2012	13,334,139	13,289,982
Fairmont Oaks [Member]
Property, Plant and Equipment [Line Items]
Number of Units	178	178
Land and improvements	850,400	850,400
Buildings and improvements	8,909,337	8,900,066
Carrying Value at September 30, 2012	$9,759,737	$9,750,466

Real_Estate_Assets_Narrative_T

Real Estate Assets Narrative Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
	Unit
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			25.00%
Mortgages payable	$76,445,451	$76,707,834
Assets	772,732,368	744,239,217
General Partner [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	1.00%
Limited Liability Company [Member]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Number of Limited Liability Companies	6
Consolidated Properties [Member]
Number of Real Estate Properties	9
Consolidated Properties [Member] | Limited Partner [Member]
Noncontrolling Interest, Ownership Percentage by Parent	99.00%
Number of Real Estate Properties	2
Maples on 97th [Member]
Proceeds from Sale of Property, Plant, and Equipment	10,700,000
Number of Units in Real Estate Property	258	258
Mortgages payable	7,476,799
Assets	7,300,000
Mortgage revenue bonds [Member]
Land	4,500,000
Number of Units in Real Estate Property	7,379
Assets	$723,613,539	$698,637,412

Real_Estate_Assets_Property_Sa

Real Estate Assets Property Sale (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Net real estate assets	$121,263,790		$122,808,314
Mortgages payable	76,445,451		76,707,834
Revenues	13,310,693	13,200,840
Depreciation and amortization	2,031,898	1,613,346
Maples on 97th [Member]
Net real estate assets	7,126,604
Mortgages payable	7,476,799
Revenues	449,100
Operating Expenses	256,988
Depreciation and amortization	214,519
Net Income (Loss) Attributable to Parent	($98,156)

Other_Assets_Other_Assets_Deta

Other Assets Other Assets (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Other Assets [Abstract]
Property loans receivable	$22,230,852	$22,191,515
Less: Loan loss reserves	-7,098,814	-7,098,814
Deferred Finance Costs, Net	4,535,783	4,659,104
Fair value of derivative contracts	523,151	267,669
Taxable bonds at fair market value	4,411,214	4,616,565
Bond Purchase Commitment - Fair Market Value Adjustment	5,204,188	5,780,413
Other assets	757,847	885,075
Total other assets	$30,564,221	$31,301,527

Other_Assets_Loan_Receivable_a

Other Assets Loan Receivable and Allowance (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	$22,230,852	$22,191,515
Accrued interest	8,737,677	8,324,812
Loan loss reserves	-7,098,814	-7,098,814
Interest Allowance	-7,744,664	-7,427,074
Net taxable loans	16,125,051	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	29,442	26,047
Loan loss reserves	0	0
Interest Allowance	0	0
Net taxable loans	220,706	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	2,557,178	2,455,660
Loan loss reserves	-3,596,342	-3,596,342
Interest Allowance	-2,557,178	-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	25,199	16,470
Loan loss reserves	0	0
Interest Allowance	0	0
Net taxable loans	299,695	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	23,099	15,097
Loan loss reserves	0	0
Interest Allowance	0	0
Net taxable loans	274,721	266,719
Cross Creek [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	7,033,587	6,976,087
Accrued interest	2,151,317	2,084,804
Loan loss reserves	-3,447,472	-3,447,472
Interest Allowance	-2,151,317	-2,084,804
Net taxable loans	3,586,115	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	258,376	231,342
Loan loss reserves	0	0
Interest Allowance	0	0
Net taxable loans	1,108,376	1,081,342
Foundation for Affordable Housing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, outstanding balance	1,542,391	1,560,553	1,603,083
Accrued interest	0	1,735
Loan loss reserves	0	0
Interest Allowance	0	0
Net taxable loans	1,542,391	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	2,716,910	2,599,613
Loan loss reserves	-55,000	-55,000
Interest Allowance	-2,696,076	-2,578,778
Net taxable loans	4,584,538	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	976,156	894,044
Loan loss reserves	0	0
Interest Allowance	-340,093	-307,832
Net taxable loans	$3,026,509	$2,976,659

Other_Assets_Schedule_of_Loan_

Other Assets Schedule of Loan Receivable (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Loans and Leases Receivable, at beginning of period	$7,098,814	$7,023,814
Provision for Loan Losses Expensed	0	75,000
Loans and Leases Receivable, at end of period	$7,098,814	$7,098,814

Other_Assets_Narrative_Tagging

Other Assets Narrative Tagging (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Provision for Loan Losses Expensed	$0		$75,000
Loans Payable	16,125,051		15,990,439
Proceeds from Sale of Available-for-sale Securities	0	18,744,294
Property loans receivable	22,230,852		22,191,515
Increase (Decrease) in Accounts and Notes Receivable	-39,337	0
Foundation for Affordable Housing [Member]
Loans Payable	1,542,391		1,562,288
Property loans receivable	1,542,391		1,560,553	1,603,083
Number of Units in Real Estate Property	96
Increase (Decrease) in Accounts and Notes Receivable	18,000
Vantage at Harlingen [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Avistar Portolio-2 [Member]
Loans Payable	274,721		266,719
Property loans receivable	251,622		251,622
Avistar Portfolio [Member]
Loans Payable	299,695		290,966
Property loans receivable	274,496		274,496
Cross Creek [Member]
Provision for Loan Losses Expensed			75,000
Loans Payable	3,586,115		3,528,615
Property loans receivable	7,033,587		6,976,087
Advances to Affiliate	57,500	42,000
Ohio Properties [Member]
Loans Payable	3,026,509		2,976,659
Property loans receivable	2,390,446		2,390,447
Advances to Affiliate		29,000
Ashley Square [Member]
Loans Payable	1,482,000		1,482,000
Property loans receivable	$5,078,342		$5,078,342

Debt_Financing_Debt_Financing_

Debt Financing Debt Financing (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	$118,297,232		$118,342,000
TEB Facility [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	103,332,167		103,516,998
TEB Facility [Member] | Ashley Square [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	5,144,000		5,159,000
TEB Facility [Member] | Bella Vista [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	6,490,000		6,490,000
TEB Facility [Member] | Bent Tree [Member] | Consolidated VIEs [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	7,444,000		7,465,000
TEB Facility [Member] | Bridle Ridge [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	7,625,000		7,655,000
TEB Facility [Member] | Brookstone [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	9,234,633		9,256,001
TEB Facility [Member] | Cross Creek [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	8,403,534		8,422,997
TEB Facility [Member] | Fairmont Oaks [Member] | Consolidated VIEs [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	7,242,000		7,266,000
TEB Facility [Member] | Lake Forest [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	8,856,000		8,886,000
TEB Facility [Member] | Runnymede [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	10,440,000		10,440,000
TEB Facility [Member] | Southpark [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	13,680,000		13,680,000
TEB Facility [Member] | Woodlynn Village [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	4,390,000		4,390,000
TEB Facility [Member] | Series A [Member] | Ohio Properties [Member] | Mortgage revenue bonds [Member]
Debt Instrument [Line Items]
Available for Sale Securities at Par Value	$14,383,000	[1]	$14,407,000	[1]
[1]	(1) Collateralized by Crescent Village, Postwoods, and Willow Bend (Note 2 and Note 9)

Debt_Financing_Contractual_Mat

Debt Financing Contractual Maturities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Debt Financing, Current Maturities	$84,172,098
Debt Financing, Maturities, Repayment of Principal in Year Two	24,872,528
Debt Financing, Maturities, Repayments of Principal in Year Three	143,627,104
Debt Financing, Maturities, Repayments of Principal in Year Four	1,217,740
Debt Financing, Maturities, Repayments of Principal in Year Five	125,418,023
Debt Financing, Maturities, Repayments of Principal after Year Five	0
Debt financing	$379,307,493	$345,359,000

Debt_Financing_Total_Debt_Fina

Debt Financing Total Debt Financing (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Debt financing	$379,307,493	$345,359,000
Trading Securities [Member]
Short-term Debt [Line Items]
Debt financing	196,985,000	174,250,000
Trading Securities [Member] | TOB facility-2 [Member]
Short-term Debt [Line Items]
Debt financing	44,675,000	44,675,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	2.20%	2.20%
Available-for-sale Security, Maturity Date at a point in time	1-Jun-15	1-Jun-15
Trading Securities [Member] | TOB facility-9 [Member]
Short-term Debt [Line Items]
Debt financing	15,000,000	25,535,000	25,800,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.05%
Available-for-sale Security, Maturity Date at a point in time	1-Nov-15	1-Jun-15
Trading Securities [Member] | TOB Facility-12 [Member] [Member]
Short-term Debt [Line Items]
Debt financing	17,250,000	17,250,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.55%	4.55%
Available-for-sale Security, Maturity Date at a point in time	1-Jul-17	1-Jul-17
Trading Securities [Member] | TOB Facility-10 [Member]
Short-term Debt [Line Items]
Debt financing	21,850,000	21,850,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.34%	4.34%
Available-for-sale Security, Maturity Date at a point in time	1-Oct-16	1-Oct-16
Trading Securities [Member] | TOB Facility-11 [Member]
Short-term Debt [Line Items]
Debt financing	34,960,000	34,975,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.47%	4.47%
Available-for-sale Security, Maturity Date at a point in time	1-Jul-19	1-Jul-19
Trading Securities [Member] | TOB facility-13 [Member]
Short-term Debt [Line Items]
Debt financing	9,010,000	9,010,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.05%	4.05%
Available-for-sale Security, Maturity Date at a point in time	1-Jul-17	1-Jul-17
Trading Securities [Member] | TOB facility-14 [Member]
Short-term Debt [Line Items]
Debt financing	9,010,000	9,010,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.05%	4.05%
Available-for-sale Security, Maturity Date at a point in time	1-Jul-17	1-Jul-17
Trading Securities [Member] | TOB facility-15 [Member]
Short-term Debt [Line Items]
Debt financing	11,940,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.80%
Available-for-sale Security, Maturity Date at a point in time	1-Feb-18
Trading Securities [Member] | TOB facility-16 [Member]
Short-term Debt [Line Items]
Debt financing	8,735,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.80%
Available-for-sale Security, Maturity Date at a point in time	1-Feb-18
Trading Securities [Member] | TOB facility-17 [Member]
Short-term Debt [Line Items]
Debt financing	12,610,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.80%
Available-for-sale Security, Maturity Date at a point in time	1-Feb-18
Mortgage Backed Security Trust 1 [Member] | Trading Securities [Member] | TOB facility-3 [Member]
Short-term Debt [Line Items]
Debt financing	2,585,000	2,585,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.10%	1.12%
Available-for-sale Security, Maturity Date at a point in time	1-Apr-15	1-Apr-15
Mortgage Backed Security Trust 2 [Member] | Trading Securities [Member] | TOB facility-3 [Member]
Short-term Debt [Line Items]
Debt financing	4,090,000	4,090,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.10%	1.12%
Available-for-sale Security, Maturity Date at a point in time	1-Apr-15	1-Apr-15
Mortgage Backed Security Trust 5 [Member] [Member] | Trading Securities [Member] | TOB facility-3 [Member]
Short-term Debt [Line Items]
Debt financing	$5,270,000	$5,270,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.08%	1.06%
Available-for-sale Security, Maturity Date at a point in time	1-Apr-15	1-Apr-15
Mortgage Backed Security Trust 5 [Member] [Member] | Trading Securities [Member] | TOB facility-9 [Member]
Short-term Debt [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate		1.96%

Debt_Financing_Narrative_Taggi

Debt Financing Narrative Tagging (Details) (USD $)	3 Months Ended			0 Months Ended	12 Months Ended		6 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Jul. 01, 2014	Dec. 31, 2014		Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2010
Debt financing	$379,307,493				$345,359,000
Available for Sale Securities, not Including Premiums					59,308,398
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities	202,888		1,778,734
Public housing capital fund trusts, at fair value	60,272,941				61,263,123
Mortgage revenue bonds held in trust, at fair value	426,022,847				378,423,092
Proceeds from Sale of Available-for-sale Securities	0		18,744,294
Available for Sale Securities at Par Value, held in trust	118,297,232				118,342,000
Payments to Acquire Available-for-sale Securities	58,945,000		34,778,800
Increase (Decrease) in Restricted Cash	46,780		73,820
Mortgages payable	76,445,451				76,707,834
Five Points Bank [Member]
Debt Instrument, Maturity Date	1-Mar-16
Line of Credit Facility, Maximum Borrowing Capacity	5,000,000
Line of Credit Facility, Interest Rate During Period	3.50%
Line of Credit, Current	1,400,000
Bankers Trust [Member]
Debt Instrument, Maturity Date	1-Mar-16
Line of Credit Facility, Maximum Borrowing Capacity	5,000,000
Line of Credit Facility, Interest Rate During Period	3.40%
TOB facility-2 [Member]
Debt, Weighted Average Interest Rate	2.20%
TOB Facility-1 [Member]
Debt, Weighted Average Interest Rate	1.10%
TEBS II Facility [Member]
Debt financing	94,600,000				94,700,000
Short-term Debt, Percentage Bearing Fixed Interest Rate	1.40%
Debt Instrument, Basis Spread on Variable Rate	0.00%
Debt Instrument, Total Rate of Borrowing	1.40%
Number of Available for Sale Securities, Held in a Trust	13
Mortgage revenue bonds held in trust, at fair value	118,372,000
Debt Financing, Net	91,600,000
Payments to Acquire Available-for-sale Securities	72,400,000
Restricted Cash and Cash Equivalents	4,400,000				6,300,000
Derivative Asset, Notional Amount				31,600,000
Derivative, Fixed Interest Rate				3.00%
Derivative, Maturity Date at a point in time				15-Aug-19
TEB Facility [Member]
Debt financing	76,300,000
Debt Instrument, Basis Spread on Variable Rate	1.90%
Debt Instrument, Interest Rate, Stated Percentage	0.10%
Debt, Weighted Average Interest Rate	2.00%
Number of Available for Sale Securities, Held in a Trust	13
Available for Sale Securities at Par Value, held in trust	103,332,167				103,516,998
Trading Securities [Member]
Debt financing	196,985,000				174,250,000
Trading Securities [Member] | TOB facility-15 [Member]
Debt financing	11,940,000
Available-for-sale Security, Maturity Date at a point in time	1-Feb-18
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.80%
Trading Securities [Member] | TOB facility-9 [Member]
Debt financing	15,000,000				25,535,000			25,800,000
Available-for-sale Security, Maturity Date at a point in time	1-Nov-15				1-Jun-15
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.05%
Trading Securities [Member] | TOB Facility-10 [Member]
Debt financing	21,850,000				21,850,000
Available-for-sale Security, Maturity Date at a point in time	1-Oct-16				1-Oct-16
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.34%				4.34%
Trading Securities [Member] | TOB facility-2 [Member]
Debt financing	44,675,000				44,675,000
Available-for-sale Security, Maturity Date at a point in time	1-Jun-15				1-Jun-15
Trading Securities [Member] | TOB Facility-12 [Member] [Member]
Debt financing	17,250,000				17,250,000
Available-for-sale Security, Maturity Date at a point in time	1-Jul-17				1-Jul-17
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.55%				4.55%
Trading Securities [Member] | TOB Facility-11 [Member]
Debt financing	34,960,000				34,975,000
Available-for-sale Security, Maturity Date at a point in time	1-Jul-19				1-Jul-19
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.47%				4.47%
Trust Portfolio--MBS Bonds [Member]
Available for Sale Securities, not Including Premiums	14,765,000
Number of Available for Sale Securities, Mortgage Backed Securities	3
Cash Collateral for Borrowed Securities	1,100,000
Public housing capital fund trusts [Member]
Available for Sale Securities, not Including Premiums	59,308,398
Debt, Weighted Average Interest Rate	5.00%
Cash Collateral for Borrowed Securities					400,000
Public housing capital fund trusts, at fair value	60,272,941				61,263,123
Woodland Park [Member]
Debt Instrument, Maturity Date	1-Aug-17
Debt Instrument, Basis Spread on Variable Rate	0.20%
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Debt, Weighted Average Interest Rate	3.00%
Proceeds from Notes Payable	7,500,000
Mortgages payable	6,100,000
Avistar at Chase Hill [Member] | TEBS II Facility [Member]
Increase (Decrease) in Restricted Cash	1,900,000
Arbors at Hickory Ridge [Member]
Mortgage revenue bonds held in trust, at fair value	12,809,067	[1]			13,363,236	[1]
Lost Creek [Member]
Proceeds from Sale of Available-for-sale Securities							18,700,000
LIFERS [Member] | Trust Portfolio--MBS Bonds [Member]
Available for Sale Securities, not Including Premiums	2,800,000
SPEARS [Member] | Trust Portfolio--MBS Bonds [Member]
TOB Financing	11,900,000
SPEARS [Member] | Public housing capital fund trusts [Member]
Public housing capital fund trusts, at fair value	44,700,000
Mortgage Backed Security Trust 5 [Member] [Member] | Trading Securities [Member] | TOB facility-3 [Member]
Debt financing	5,270,000				5,270,000
Available-for-sale Security, Maturity Date at a point in time	1-Apr-15				1-Apr-15
Class A TEBS Certificates [Member] | TEB Facility [Member]
Debt financing									95,800,000
Class B TEBS Certificates [Member] | TEB Facility [Member]
Debt financing									20,300,000
Series B [Member] | TEBS II Facility [Member]
Mortgage revenue bonds held in trust, at fair value	23,700,000
Subsequent Event [Member] | Trading Securities [Member] | TOB facility-15, 16, and 17 [Member]
Debt financing	$33,300,000
Subsequent Event [Member] | Trading Securities [Member] | TOB facility-15 [Member]
Debt, Weighted Average Interest Rate	2.80%
Available-for-sale Security, Maturity Date at a point in time	19-Feb-18
[1]	Mortgage revenue bonds owned by ATAX TEBS II, LLC, Note 9

Debt_Financing_2014_TEBS_Finan

Debt Financing 2014 TEBS Financing (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Available for Sale Securities at Par Value, held in trust	$118,297,232	$118,342,000
Mortgage revenue bonds [Member] | Arbors at Hickory Ridge [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	11,450,000	11,450,000
Mortgage revenue bonds [Member] | Copper Gate [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	5,220,000	5,220,000
Mortgage revenue bonds [Member] | The Palms at Premier Park [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	20,125,232	20,152,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar at Chase Hill [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	10,000,000	10,000,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar at the Crest [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	9,700,000	9,700,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar at the Oaks [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	7,800,000	7,800,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar in 09 [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	6,735,000	6,735,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar on the Boulevard [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	16,525,000	16,525,000
Series A [Member] | Mortgage revenue bonds [Member] | Avistar on the Hills [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	5,389,000	5,389,000
Series A [Member] | Mortgage revenue bonds [Member] | Greens of Pine Glen [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	8,348,000	8,366,000
Series A [Member] | Mortgage revenue bonds [Member] | Harden Ranch [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	6,960,000	6,960,000
Series A [Member] | Mortgage revenue bonds [Member] | Tyler Park Apartments [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	6,075,000	6,075,000
Series A [Member] | Mortgage revenue bonds [Member] | Westside Village Market [Member] | TEBS II Facility [Member]
Available for Sale Securities at Par Value, held in trust	$3,970,000	$3,970,000

Mortgages_Payable_Mortgages_Pa

Mortgages Payable Mortgages Payable (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Mortgages Payable [Abstract]
Long-term Debt, Current Maturities	$9,130,349
Long-term Debt, Maturities, Repayments of Principal in Year Two	24,265,268
Long-term Debt, Maturities, Repayments of Principal in Year Three	13,581,274
Long-term Debt, Maturities, Repayments of Principal in Year Four	3,968,570
Long-term Debt, Maturities, Repayments of Principal in Year Five	25,499,990
Long-term Debt, Maturities, Repayments of Principal after Year Five	0
Mortgages Payable	$76,445,451	$76,707,834

Mortgages_Payable_Footnote_Tag

Mortgages Payable Footnote Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Repayments of Long-term Debt	$25,761,768	$17,013,000
Mortgages payable	76,445,451		76,707,834
Consolidated Properties [Member]
Mortgages payable	76,400,000		76,700,000
Woodland Park [Member]
Mortgages payable	6,100,000
Notes Payable, Current				7,000,000
Proceeds from Notes Payable	7,500,000
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Short-term Debt, Percentage Bearing Variable Interest Rate	0.20%
Debt, Weighted Average Interest Rate	3.00%
Debt Instrument, Maturity Date	1-Aug-17
Maples on 97th [Member]
Mortgages payable	7,476,799
Five Points Bank [Member]
Debt Instrument, Maturity Date	1-Mar-16
Long-term Line of Credit	$1,400,000
Minimum [Member] | Long-term Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage	2.90%
Debt Instrument, Maturity Date	1-Sep-15
Maximum [Member] | Long-term Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.80%
Debt Instrument, Maturity Date	1-Mar-20

Transactions_with_Related_Part1

Transactions with Related Parties Narrative Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
	properties
rate for administration fees	0.45%
Fees and Commissions, Other	$534,000	$323,000
Management Fees Revenue	324,000	300,000
Placement Advisory Fees	267,000	161,500
Number of Variable Interest Entities	11
Majority-Owned Subsidiary, Unconsolidated [Member]
Payment for Administrative Fees	620,000	473,000
Affiliated Entity [Member]
Payment for Administrative Fees	16,500	17,000
Consolidated VIEs [Member]
Number of Real Estate Properties	2
Number of Variable Interest Entities	2
MF Properties [Member]
Number of Real Estate Properties	6
UNL Project [Member]
Fees and Commissions	$0	$112,000
Total Owners [Member]
Number of Owners	4
Total Owners [Member] | Consolidated VIEs [Member]
Number of Variable Interest Entities	2
Unconsolidated Properties [Member]
Number of Variable Interest Entities	9

Interest_Rate_Derivative_Agree2

Interest Rate Derivative Agreements (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Bank of New York Mellon [Member]
Derivative [Line Items]
Derivative, Purchase Date	2-Sep-10
Derivative Asset, Notional Amount	$31,936,667
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	1-Sep-17
Deriviative at purchase price	921,000
Barclays Bank PLC [Member]
Derivative [Line Items]
Derivative, Purchase Date	2-Sep-10
Derivative Asset, Notional Amount	31,936,667
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	1-Sep-17
Deriviative at purchase price	845,600
Royal Bank of Canada [Member]
Derivative [Line Items]
Derivative, Purchase Date	2-Sep-10
Derivative Asset, Notional Amount	31,936,667
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	1-Sep-17
Deriviative at purchase price	928,000
Deutsche Bank [Member]
Derivative [Line Items]
Derivative, Purchase Date	15-Aug-13
Derivative Asset, Notional Amount	93,305,000
Derivative, Fixed Interest Rate	1.50%
Derivative, Maturity Date at a point in time	1-Sep-17
Deriviative at purchase price	793,000
SMBC Capital Markets, Inc [Member]
Derivative [Line Items]
Derivative, Purchase Date	18-Feb-14
Derivative Asset, Notional Amount	41,250,000
Derivative, Fixed Interest Rate	1.00%
Derivative, Maturity Date at a point in time	1-Mar-17
Deriviative at purchase price	230,500
SMBC Capital Markets, Inc-2 [Member]
Derivative [Line Items]
Derivative, Purchase Date	18-Feb-14
Derivative Asset, Notional Amount	11,000,000
Derivative, Fixed Interest Rate	1.00%
Derivative, Maturity Date at a point in time	1-Mar-17
Deriviative at purchase price	150,500
Barclays Bank PLC 1 [Member]
Derivative [Line Items]
Derivative, Purchase Date	10-Jul-14
Derivative Asset, Notional Amount	31,565,000
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	15-Aug-19
Deriviative at purchase price	315,200
Royal Bank of Canada-2 [Member]
Derivative [Line Items]
Derivative, Purchase Date	10-Jul-14
Derivative Asset, Notional Amount	31,565,000
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	15-Aug-19
Deriviative at purchase price	343,000
SMBC Capital Markets, Inc-3 [Member]
Derivative [Line Items]
Derivative, Purchase Date	10-Jul-14
Derivative Asset, Notional Amount	31,565,000
Derivative, Fixed Interest Rate	3.00%
Derivative, Maturity Date at a point in time	15-Aug-19
Deriviative at purchase price	$333,200

Interest_Rate_Derivative_Agree3

Interest Rate Derivative Agreements Footnote Tagging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	derivatives
Derivative [Line Items]
Number of Derivatives	9
Derivative, Loss on Derivative	$900,000	$176,000
Payments for Derivative Instrument, Investing Activities	-10,500	391,500
SMBC Capital Markets, Inc 1 and 2 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	52,300,000		70,000,000
Derivative, Maturity Date at a point in time	1-Mar-17
Derivative, Fixed Interest Rate	1.00%
Deriviative at purchase price	369,500
SMBC Capital Markets, Inc-2 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	11,000,000
Derivative, Maturity Date at a point in time	1-Mar-17
Payments for Derivative Instrument, Investing Activities	0
Derivative, Fixed Interest Rate	1.00%
Deriviative at purchase price	150,500
Deutsche Bank [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	93,305,000
Derivative, Maturity Date at a point in time	1-Sep-17
Derivative, Fixed Interest Rate	1.50%
Deriviative at purchase price	793,000
Swap [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	2.00%
Decatur-Angle [Member] | Swap [Member]
Derivative [Line Items]
Derivative, Gain on Derivative	646,000
Derivative, Notional Amount	23,000,000
Document Effective Date	15-Oct-16
Derivative, Maturity Date	15-Oct-21
Bruton Apartments [Member] | Swap [Member]
Derivative [Line Items]
Derivative, Loss on Derivative	520,000
Derivative, Notional Amount	$18,100,000
Document Effective Date	15-Apr-17
Derivative, Maturity Date	15-Apr-22

Fair_Value_Measurements_Availa

Fair Value Measurements Available for sale securities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			$535,793,465
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value	81,875,851		70,601,045
Assets, Fair Value Disclosure	592,028,676		535,793,465
Mortgage revenue bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			449,024,137
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	507,898,698		449,024,137
Bond Purchase Commitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			5,780,413
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	5,204,188		5,780,413
Public housing capital fund trusts [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			61,263,123
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	60,272,941		61,263,123
Trust Portfolio--MBS Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			14,841,558
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	14,884,339		14,841,558
Taxable Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			4,616,565
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	4,411,214		4,616,565
Interest rate derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure			267,669
Total gains (lossses) (realized/unrealized) [Abstract]
Assets, Fair Value Disclosure	-642,704		267,669
Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Mortgage revenue bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Bond Purchase Commitment [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Trust Portfolio--MBS Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Taxable Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 1 [Member] | Interest rate derivatives [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Quoted Market Value	0		0
Fair Value, Inputs, Level 2 [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	14,884,339		14,841,558
Fair Value, Inputs, Level 2 [Member] | Mortgage revenue bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	0		0
Fair Value, Inputs, Level 2 [Member] | Bond Purchase Commitment [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	0		0
Fair Value, Inputs, Level 2 [Member] | Public housing capital fund trusts [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	0		0
Fair Value, Inputs, Level 2 [Member] | Trust Portfolio--MBS Bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	14,884,339		14,841,558
Fair Value, Inputs, Level 2 [Member] | Taxable Bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	0		0
Fair Value, Inputs, Level 2 [Member] | Interest rate derivatives [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value Observable inputs (level 2)	0		0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	520,951,907	352,338,623
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	-899,873	-175,837
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	-1,683,508	15,953,883
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	58,945,000
Deriviative at purchase price	-10,500	391,500
Assets, Fair Value Disclosure	577,144,337	383,945,007
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	-158,689	-1,705,824
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	577,144,337		520,951,907
Fair Value, Inputs, Level 3 [Member] | Mortgage revenue bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	449,024,137	285,318,171
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	0	0
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	74,600	14,073,020
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	58,945,000
Deriviative at purchase price	0	0
Assets, Fair Value Disclosure	507,898,698	316,471,727
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	-145,039	-62,126
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	507,898,698		449,024,137
Fair Value, Inputs, Level 3 [Member] | Bond Purchase Commitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	5,780,413
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	0
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	-576,225
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Deriviative at purchase price	0
Assets, Fair Value Disclosure	5,204,188
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	5,204,188		5,780,413
Fair Value, Inputs, Level 3 [Member] | Public housing capital fund trusts [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	61,263,123	62,056,379
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	0	0
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	-976,532	1,657,859
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Deriviative at purchase price	0	0
Assets, Fair Value Disclosure	60,272,941	62,070,540
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	-13,650	-1,643,698
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	60,272,941		61,263,123
Fair Value, Inputs, Level 3 [Member] | Trust Portfolio--MBS Bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	0		0
Fair Value, Inputs, Level 3 [Member] | Taxable Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	4,616,565	4,075,953
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	0	0
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	-205,351	223,004
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Deriviative at purchase price	0	0
Assets, Fair Value Disclosure	4,411,214	4,298,957
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	4,411,214		4,616,565
Fair Value, Inputs, Level 3 [Member] | Interest rate derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring/Nonrecurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets, Fair Value Disclosure	267,669	888,120
Total gains (lossses) (realized/unrealized) [Abstract]
Gain (Loss) on Investments	-899,873	-175,837
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Deriviative at purchase price	-10,500	391,500
Assets, Fair Value Disclosure	-642,704	1,103,783
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	-642,704		267,669
Greens of Pine Glen [Member] | Fair Value, Inputs, Level 3 [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		34,778,800
Greens of Pine Glen [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage revenue bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		34,778,800
Greens of Pine Glen [Member] | Fair Value, Inputs, Level 3 [Member] | Public housing capital fund trusts [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		0
Greens of Pine Glen [Member] | Fair Value, Inputs, Level 3 [Member] | Taxable Bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		0
Greens of Pine Glen [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate derivatives [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		0
Lost Creek [Member] | Fair Value, Inputs, Level 3 [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value		-17,636,138
Lost Creek [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage revenue bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value		-17,636,138
Lost Creek [Member] | Fair Value, Inputs, Level 3 [Member] | Public housing capital fund trusts [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value		0
Lost Creek [Member] | Fair Value, Inputs, Level 3 [Member] | Taxable Bonds [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value		0
Lost Creek [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate derivatives [Member]
Total gains (lossses) (realized/unrealized) [Abstract]
Mortgage revenue bonds, at fair value		$0

Fair_Value_Measurements_Fair_M

Fair Value Measurements Fair Market Value of Liabilities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Debt financing	$379,307,493	$345,359,000
Mortgages payable	76,445,451	76,707,834
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Debt financing	379,307,493	345,359,000
Mortgages payable	76,445,451	76,707,845
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Debt financing	380,751,539	346,813,909
Mortgages payable	$75,876,463	$76,134,465

Fair_Value_Measurements_Narrat

Fair Value Measurements Narrative Footnote (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	($576,225)	$3,489,237

Commitments_and_Contingencies_1

Commitments and Contingencies Narrative Tagging (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Property loans receivable	$22,230,852	$22,191,515
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure	367,900,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			25.00%
Available-For-Sale Securities, Gross Unrealized Loss MTM	17,516	19,582
Villas at Plano Gateway [Member]
Long-term Purchase Commitment, Amount	20,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.00%
15 West Apartments [Member]
Long-term Purchase Commitment, Amount	9,900,000
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Foundation for Affordable Housing [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted				2,800,000
Number of Units in Real Estate Property	96
Property loans receivable	1,542,391	1,560,553		1,603,083
Greens of Pine Glen [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted	1,300,000
Property loans receivable	850,000	850,000
Percentage of Loss Contingency, Range of Possible Loss, Maximum	75.00%
Ohio Properties [Member]
Property loans receivable	2,390,446	2,390,447
Percentage of Loss Contingency, Range of Possible Loss, Maximum	75.00%
Loss Contingency, Range of Possible Loss, Maximum	4,900,000
Silver Moon [Member]
Long-term Purchase Commitment, Amount	8,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Mortgage revenue bonds [Member]
Number of Units in Real Estate Property	7,379
Mortgage revenue bonds [Member] | Villas at Plano Gateway [Member]
Long-term Purchase Commitment, Amount		20,000,000
Debt Instrument, Interest Rate, Stated Percentage		6.00%
Mortgage revenue bonds [Member] | 15 West Apartments [Member]
Long-term Purchase Commitment, Amount	$9,900,000
Debt Instrument, Interest Rate, Stated Percentage	6.25%

Commitments_and_Contingencies_2

Commitments and Contingencies Fair Market Value Table (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	$17,516	$19,582
15 West Apartments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Long-term Purchase Commitment, Amount	9,900,000
Forward Bond Commitment, Purchase Date	1-Jul-14
Villas at Plano Gateway [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Long-term Purchase Commitment, Amount	20,000,000
Forward Bond Commitment, Purchase Date	1-Dec-14
Silver Moon [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Long-term Purchase Commitment, Amount	8,000,000
Forward Bond Commitment, Purchase Date	1-Jun-13
Vantage at Harlingen [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	0	0
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Long-term Purchase Commitment, Amount	18,000,000
Forward Bond Commitment, Purchase Date	1-Aug-13
Vantage at Judson [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	0	0
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Long-term Purchase Commitment, Amount	26,700,000
Forward Bond Commitment, Purchase Date	1-Dec-12
Bond Purchase Commitment [Member] | 15 West Apartments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	744,660	809,178
Bond Purchase Commitment [Member] | Villas at Plano Gateway [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	1,005,800	1,133,400
Bond Purchase Commitment [Member] | Silver Moon [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	366,320	413,600
Bond Purchase Commitment [Member] | Vantage at Harlingen [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	1,278,900	1,433,700
Bond Purchase Commitment [Member] | Vantage at Judson [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-For-Sale Securities, Gross Unrealized Loss MTM	$1,808,508	$1,990,535

Segment_Reporting_Segment_Repo

Segment Reporting Segment Reporting (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenues [Abstract]
Revenues	$13,310,693	$13,200,840
Interest Expense [Abstract]
Interest expense	3,989,121	2,169,549
Depreciation [Abstract]
Depreciation	1,693,299	1,252,147
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	2,524,479	6,046,829
Assets [Abstract]
Assets	772,732,368		744,239,217
Partners' Capital
Partners' Capital	303,227,225		309,943,899
Mortgage revenue bonds [Member]
Revenues [Abstract]
Revenues	7,549,171	8,260,913
Interest Expense [Abstract]
Interest expense	2,947,100	1,149,922
Depreciation [Abstract]
Depreciation	0	0
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	2,520,116	5,628,100
Assets [Abstract]
Assets	723,613,539		698,637,412
Partners' Capital
Partners' Capital	344,804,295		355,480,225
MF Properties [Member]
Revenues [Abstract]
Revenues	4,302,301	3,150,344
Interest Expense [Abstract]
Interest expense	712,899	563,340
Depreciation [Abstract]
Depreciation	1,454,179	1,019,366
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	-393,641	-224,508
Assets [Abstract]
Assets	111,632,020		101,696,234
Partners' Capital
Partners' Capital	-6,379,698		18,600,449
Public Housing Capital Fund Trust Certificates [Member]
Revenues [Abstract]
Revenues	732,903	800,828
Interest Expense [Abstract]
Interest expense	296,460	337,557
Depreciation [Abstract]
Depreciation	0	0
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	429,148	456,118
Assets [Abstract]
Assets	60,664,767		61,577,848
Partners' Capital
Partners' Capital	15,890,718		16,803,457
Residential Mortgage Backed Securities [Member]
Revenues [Abstract]
Revenues	152,860	421,160
Interest Expense [Abstract]
Interest expense	37,697	118,730
Depreciation [Abstract]
Depreciation	0	0
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	115,022	299,890
Assets [Abstract]
Assets	15,104,963		15,101,309
Partners' Capital
Partners' Capital	3,105,324		3,095,526
Consolidated VIEs [Member]
Revenues [Abstract]
Revenues	804,068	800,872
Interest Expense [Abstract]
Interest expense	569,934	557,884
Depreciation [Abstract]
Depreciation	239,120	232,781
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	-497,170	-444,098
Assets [Abstract]
Assets	13,169,000		13,456,861
Partners' Capital
Partners' Capital	-23,996,786		-23,499,616
Consolidation, Eliminations [Member]
Revenues [Abstract]
Revenues	-230,610	-233,277
Interest Expense [Abstract]
Interest expense	-574,969	-557,884
Depreciation [Abstract]
Depreciation	0	0
Net Income (Loss) Attributable to Parent [Abstract]
Operating Income (Loss)	351,004	331,327
Assets [Abstract]
Assets	-151,451,921		-146,230,447
Partners' Capital
Partners' Capital	($30,196,628)		($60,536,142)

Segment_Reporting_Footnote_Tag

Segment Reporting Footnote Tagging (Details)	3 Months Ended
	Mar. 31, 2015
	Integer
	segments
	properties
Segment Reporting Information [Line Items]
Number of Reportable Segments	5
Number of Available for Sale Securities	57
Number of Variable Interest Entities	11
Mortgage revenue bonds [Member]
Segment Reporting Information [Line Items]
Number of Units in Real Estate Property	7,379
MF Properties [Member]
Segment Reporting Information [Line Items]
Number of Units in Real Estate Property	2,169
Number of Real Estate Properties	6
Consolidated VIEs [Member]
Segment Reporting Information [Line Items]
Number of Units in Real Estate Property	410
Number of Real Estate Properties	2
Number of Variable Interest Entities	2
Public housing capital fund trusts [Member]
Segment Reporting Information [Line Items]
Number of Available for Sale Securities, Public Housing Authorities	3
Unconsolidated Available for Sale Securities [Member]
Segment Reporting Information [Line Items]
Number of Available for Sale Securities	60
Consolidated VIEs [Member]
Segment Reporting Information [Line Items]
Number of Available for Sale Securities	2
Consolidated Properties [Member]
Segment Reporting Information [Line Items]
Number of Real Estate Properties	9
Consolidated Properties [Member] | MF Properties [Member]
Segment Reporting Information [Line Items]
Number of Real Estate Properties	9

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
	Integer	Unit
Subsequent Event [Line Items]
Mortgage revenue bonds, at fair value	$81,875,851		$70,601,045
Number of Available for Sale Securities	57
Available for Sale Securities, not Including Premiums			59,308,398
Trust Portfolio--MBS Bonds [Member]
Subsequent Event [Line Items]
Available for Sale Securities, not Including Premiums	14,765,000
Series A [Member] | Perrin Square [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Mortgage revenue bonds, at fair value		13,300,000
Debt Instrument, Interest Rate, Stated Percentage		6.00%
Debt Instrument, Maturity Date		1-May-52
Number of Units in Real Estate Property		236
Series B [Member] | Perrin Square [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Mortgage revenue bonds, at fair value		$125,000
Debt Instrument, Interest Rate, Stated Percentage		12.00%
Available-for-sale Security, Maturity Date at a point in time		1-Jun-52

Uncategorized_Items

Uncategorized Items	12/31/11
	USD ($)
[us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations]	11,318,015
[us-gaap_PartnersCapitalAccountUnits]		60,252,928	60,252,928