Basis of Presentation	12 Months Ended
Dec. 31, 2016
Basis Of Presentation [Abstract]
Basis of Presentation	1. Basis of Presentation America First Multifamily Investors, L.P. (the “Company” or “Partnership”) was formed on April 2, 1998, under the Delaware Revised Uniform Limited Partnership Act for the 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 and student housing 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. Thus, 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 may or may not be financed by mortgage revenue bonds held by the Partnership. The Partnership may acquire real estate securing its mortgage revenue bonds or property loans through foreclosure in the event of a default or through the receipt of a fee simple deed in lieu of foreclosure. 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 or to operate the MF Property until its “highest and best use” can be determined by management. 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. The general partner is America First Capital Associates Limited Partnership Two (“AFCA 2” or “General Partner”). The general partner of AFCA 2 is Burlington Capital LLC (“Burlington”). The Partnership has issued Beneficial Unit Certificates (“BUCs”) representing assigned limited partner interests to investors (“Unitholders”). During 2016, the Partnership issued, in private placements, approximately 4.1 million units of non-cumulative, non-voting, non-convertible Series A Preferred Units (“Series A Preferred Units”). The Series A Preferred Units are redeemable in the future and represent limited partnership interests in the Partnership pursuant to a subscription agreement with four financial institutions resulting in approximately $40.9 million in gross aggregate proceeds to the Partnership (Note 21). All disclosures of the number units for properties related to mortgage revenue bonds, taxable bonds and MF Properties are unaudited.

1. Basis of Presentation

America First Multifamily Investors, L.P. (the “Company” or “Partnership”) was formed on April 2, 1998, under the Delaware Revised Uniform Limited Partnership Act for the 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 and student housing 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. Thus, 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 may or may not be financed by mortgage revenue bonds held by the Partnership. The Partnership may acquire real estate securing its mortgage revenue bonds or property loans through foreclosure in the event of a default or through the receipt of a fee simple deed in lieu of foreclosure. 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 or to operate the MF Property until its “highest and best use” can be determined by management. 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.

The general partner is America First Capital Associates Limited Partnership Two (“AFCA 2” or “General Partner”). The general partner of AFCA 2 is Burlington Capital LLC (“Burlington”). The Partnership has issued Beneficial Unit Certificates (“BUCs”) representing assigned limited partner interests to investors (“Unitholders”). During 2016, the Partnership issued, in private placements, approximately 4.1 million units of non-cumulative, non-voting, non-convertible Series A Preferred Units (“Series A Preferred Units”). The Series A Preferred Units are redeemable in the future and represent limited partnership interests in the Partnership pursuant to a subscription agreement with four financial institutions resulting in approximately $40.9 million in gross aggregate proceeds to the Partnership (Note 21).

All disclosures of the number units for properties related to mortgage revenue bonds, taxable bonds and MF Properties are unaudited.