Document and Entity Information	9 Months Ended
	Sep. 30, 2015 shares
Entity Registrant Name	AMERICA FIRST MULTIFAMILY INVESTORS, L.P.
Entity Central Index Key	0001059142
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Units Outstanding	0