XML 32 R42.htm IDEA: XBRL DOCUMENT v2.4.1.9
Variable Interest Entities Narrative Tagging (Details)
 3 Months Ended
Mar. 31, 2015
properties
Available-for-Sale Securities, Ownership Percentage 100.00%atax_AvailableForSaleSecuritiesOwnershipPercentage
Number of Variable Interest Entities 11atax_NumberOfVariableInterestEntities
Total Owners [Member]  
Number of Owners 4atax_NumberOfOwners
/ us-gaap_OtherOwnershipInterestsByNameAxis
= atax_TotalOwnersMember
Related party owner [Member]  
Number of Owners 2atax_NumberOfOwners
/ us-gaap_OtherOwnershipInterestsByNameAxis
= atax_RelatedPartyOwnerMember
Consolidated VIEs [Member]  
Number of Variable Interest Entities 2atax_NumberOfVariableInterestEntities
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Unconsolidated Properties [Member]  
Number of Variable Interest Entities 9atax_NumberOfVariableInterestEntities
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_UnconsolidatedPropertiesMember