Condensed Consolidated Statement of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income	$ 2,531,688	$ 2,523,588
Reversal of net unrealized gain on sale of securities	(236,439)
Unrealized gain (loss) on securities	12,337,427	(1,057,235)
Unrealized gain (loss) on bond purchase commitments	1,587,813	(576,225)
General Partner	67,155	26,706
Limited Partners - Unitholders	2,462,861	2,643,939
Unallocated loss of Consolidated Property VIEs		(146,166)
Accumulated Other Comprehensive Income (Loss) [Member]
Net income	2,531,688	2,523,588
Reversal of net unrealized gain on sale of securities	(236,439)
Unrealized gain (loss) on securities	12,337,427	(1,057,235)
Unrealized gain (loss) on bond purchase commitments	1,587,813	(576,225)
Comprehensive income	16,220,489	890,128
General Partner	204,060	10,372
Limited Partners - Unitholders	16,016,441	1,026,813
Unallocated loss of Consolidated Property VIEs		(146,166)
Comprehensive income - America First Multifamily Investors, L.P.	16,220,501	891,019
Comprehensive loss allocated to noncontrolling interest	(12)	(891)
Commitments [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized gain (loss) on bond purchase commitments	$ 1,587,813	$ (576,225)