Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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- Definition

Estimated Total Cost of Construction

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No definition available.

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- Definition

Amount of unrealized gain (loss) before deducting unrealized gain on investments in forward bond commitments.

+ References

No definition available.

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- Definition

Number of Parking Stalls

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No definition available.

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- Definition

The estimated maximum percentage of possible loss from the contingency.

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No definition available.

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- Definition

Property loan receivable, gross - Amount before allowance of loans held in portfolio. Includes principal only.

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No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Regulation S-X (SX)

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Section 50

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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No definition available.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The minimum amount the entity agreed to spend under the long-term purchase commitment.

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No definition available.

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The estimated maximum amount of possible loss from the contingency.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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The number of units in a real estate property owned as of the balance sheet date.

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Commitments and Contingencies Commitments and Contingencies Narrative Tagging (Details) (USD $)	12 Months Ended		3 Months Ended	6 Months Ended
	Dec. 31, 2013 Unit parkingstalls	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2013
Property loan receivable, gross	$ 21,549,927atax_PropertyLoanReceivableGross	$ 22,191,515atax_PropertyLoanReceivableGross
Long-term Debt	57,087,320us-gaap_LongTermDebt	76,707,834us-gaap_LongTermDebt
Foundation for Affordable Housing [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted		2,800,000
Number of Units in Real Estate Property	96	96
Property loan receivable, gross	1,603,083	1,560,553
Debt Instrument, Interest Rate, Stated Percentage	9.00%
Greens of Pine Glen [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted		1,300,000
Property loan receivable, gross	876,000	850,000
Percentage of Loss Contingency, Range of Possible Loss, Maximum		75.00%
Ohio Properties [Member]
Property loan receivable, gross	2,361,447	2,390,447
Percentage of Loss Contingency, Range of Possible Loss, Maximum		75.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		25.00%
Loss Contingency, Range of Possible Loss, Maximum		4,900,000
The 50/50 Student Housing--UNL [Member]
Number of Units in Real Estate Property	475
Operating Leases, Rent Expense	100
Number of Parking Stalls	1,605
Estimated Total Cost of Construction	33,800,000
Available-for-sale Securities [Member] \| Villas at Plano Gateway [Member]
Debt Instrument, Interest Rate, Stated Percentage		6.00%
Available-For-Sale Securities, Gross Unrealized Loss MTM		1,100,000
Long-term Purchase Commitment, Amount		20,000,000
Available-for-sale Securities [Member] \| 15 West Apartments [Member]
Debt Instrument, Interest Rate, Stated Percentage			6.30%
Available-For-Sale Securities, Gross Unrealized Loss MTM			809,000
Long-term Purchase Commitment, Amount			9,900,000
Available-for-sale Securities [Member] \| Silver Moon [Member]
Debt Instrument, Interest Rate, Stated Percentage				6.00%
Long-term Purchase Commitment, Amount				8,000,000
Forward Bond Commitment, Gross Unrealized Loss	(600,000)	400,000
Taxable Municipal Bonds [Member] \| Silver Moon [Member]
Debt Instrument, Interest Rate, Stated Percentage				12.00%
Long-term Purchase Commitment, Amount				$ 500,000