CONDENSED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Income
Interest income	$ 13,934	$ 12,813
Other income	87,713	128,173
Revenues	101,647	140,986
Share of income (loss) from Operating Partnerships (Note D)	4,529,631	7,788,656
Expenses
Professional fees	129,367	186,023
Fund management fee, net (Note C)	520,374	587,049
General and administrative expenses	107,022	120,712
Operating expenses	756,763	893,784
NET INCOME (LOSS)	3,874,515	7,035,858
Net income (loss) allocated to assignees	3,835,770	6,965,499
Net income (loss) allocated to general partner	$ 38,745	$ 70,359
Net income (loss) per BAC (in dollars per unit)	$ 0.05	$ 0.08
Series Twenty [Member]
Income
Interest income	$ 35	$ 104
Other income	0	0
Revenues	35	104
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	2,980	3,063
Fund management fee, net (Note C)	3,718	7,538
General and administrative expenses	4,238	4,992
Operating expenses	10,936	15,593
NET INCOME (LOSS)	(10,901)	(15,489)
Net income (loss) allocated to assignees	(10,792)	(15,334)
Net income (loss) allocated to general partner	$ (109)	$ (155)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.00)
Series Twenty One [Member]
Income
Interest income	$ 29	$ 224
Other income	0	0
Revenues	29	224
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	2,630	2,982
Fund management fee, net (Note C)	2,256	2,255
General and administrative expenses	3,506	3,588
Operating expenses	8,392	8,825
NET INCOME (LOSS)	(8,363)	(8,601)
Net income (loss) allocated to assignees	(8,279)	(8,515)
Net income (loss) allocated to general partner	$ (84)	$ (86)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.00)
Series Twenty Two [Member]
Income
Interest income	$ 84	$ 106
Other income	0	0
Revenues	84	106
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	2,980	3,355
Fund management fee, net (Note C)	6,803	6,802
General and administrative expenses	3,832	4,197
Operating expenses	13,615	14,354
NET INCOME (LOSS)	(13,531)	(14,248)
Net income (loss) allocated to assignees	(13,396)	(14,106)
Net income (loss) allocated to general partner	$ (135)	$ (142)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Twenty Three [Member]
Income
Interest income	$ 866	$ 91
Other income	1,977	0
Revenues	2,843	91
Share of income (loss) from Operating Partnerships (Note D)	959,665	3,550
Expenses
Professional fees	3,755	5,081
Fund management fee, net (Note C)	3,806	7,472
General and administrative expenses	4,137	4,863
Operating expenses	11,698	17,416
NET INCOME (LOSS)	950,810	(13,775)
Net income (loss) allocated to assignees	941,302	(13,637)
Net income (loss) allocated to general partner	$ 9,508	$ (138)
Net income (loss) per BAC (in dollars per unit)	$ 0.28	$ (0.00)
Series Twenty Four [Member]
Income
Interest income	$ 82	$ 105
Other income	0	1,680
Revenues	82	1,785
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	3,325	3,519
Fund management fee, net (Note C)	11,421	9,398
General and administrative expenses	3,784	4,730
Operating expenses	18,530	17,647
NET INCOME (LOSS)	(18,448)	(15,862)
Net income (loss) allocated to assignees	(18,264)	(15,703)
Net income (loss) allocated to general partner	$ (184)	$ (159)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Twenty Five [Member]
Income
Interest income	$ 71	$ 88
Other income	0	0
Revenues	71	88
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	2,980	3,030
Fund management fee, net (Note C)	5,934	5,934
General and administrative expenses	4,043	5,645
Operating expenses	12,957	14,609
NET INCOME (LOSS)	(12,886)	(14,521)
Net income (loss) allocated to assignees	(12,757)	(14,376)
Net income (loss) allocated to general partner	$ (129)	$ (145)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.00)
Series Twenty Six [Member]
Income
Interest income	$ 136	$ 349
Other income	420	420
Revenues	556	769
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	4,725	5,665
Fund management fee, net (Note C)	21,545	23,717
General and administrative expenses	4,513	6,931
Operating expenses	30,783	36,313
NET INCOME (LOSS)	(30,227)	(35,544)
Net income (loss) allocated to assignees	(29,925)	(35,189)
Net income (loss) allocated to general partner	$ (302)	$ (355)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Twenty Seven [Member]
Income
Interest income	$ 4,338	$ 1,236
Other income	0	0
Revenues	4,338	1,236
Share of income (loss) from Operating Partnerships (Note D)	3,291,567	2,995,000
Expenses
Professional fees	17,770	34,369
Fund management fee, net (Note C)	14,968	26,358
General and administrative expenses	3,832	3,850
Operating expenses	36,570	64,577
NET INCOME (LOSS)	3,259,335	2,931,659
Net income (loss) allocated to assignees	3,226,742	2,902,342
Net income (loss) allocated to general partner	$ 32,593	$ 29,317
Net income (loss) per BAC (in dollars per unit)	$ 1.32	$ 1.18
Series Twenty Eight [Member]
Income
Interest income	$ 148	$ 302
Other income	446	7,976
Revenues	594	8,278
Share of income (loss) from Operating Partnerships (Note D)	0	5,000
Expenses
Professional fees	4,025	4,415
Fund management fee, net (Note C)	6,844	10,147
General and administrative expenses	4,283	6,320
Operating expenses	15,152	20,882
NET INCOME (LOSS)	(14,558)	(7,604)
Net income (loss) allocated to assignees	(14,412)	(7,528)
Net income (loss) allocated to general partner	$ (146)	$ (76)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.00)
Series Twenty Nine [Member]
Income
Interest income	$ 92	$ 278
Other income	0	0
Revenues	92	278
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	3,675	39,049
Fund management fee, net (Note C)	20,546	20,546
General and administrative expenses	4,351	5,065
Operating expenses	28,572	64,660
NET INCOME (LOSS)	(28,480)	(64,382)
Net income (loss) allocated to assignees	(28,195)	(63,738)
Net income (loss) allocated to general partner	$ (285)	$ (644)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.02)
Series Thirty [Member]
Income
Interest income	$ 57	$ 218
Other income	1,243	1,243
Revenues	1,300	1,461
Share of income (loss) from Operating Partnerships (Note D)	263,893	0
Expenses
Professional fees	3,675	4,384
Fund management fee, net (Note C)	(31,900)	9,605
General and administrative expenses	3,764	3,919
Operating expenses	(24,461)	17,908
NET INCOME (LOSS)	289,654	(16,447)
Net income (loss) allocated to assignees	286,757	(16,283)
Net income (loss) allocated to general partner	$ 2,897	$ (164)
Net income (loss) per BAC (in dollars per unit)	$ 0.11	$ (0.01)
Series Thirty One [Member]
Income
Interest income	$ 1,017	$ 754
Other income	476	476
Revenues	1,493	1,230
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	5,425	5,839
Fund management fee, net (Note C)	20,199	35,021
General and administrative expenses	4,285	4,978
Operating expenses	29,909	45,838
NET INCOME (LOSS)	(28,416)	(44,608)
Net income (loss) allocated to assignees	(28,132)	(44,162)
Net income (loss) allocated to general partner	$ (284)	$ (446)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Thirty Two [Member]
Income
Interest income	$ 323	$ 626
Other income	0	1,800
Revenues	323	2,426
Share of income (loss) from Operating Partnerships (Note D)	14,506	0
Expenses
Professional fees	4,025	4,455
Fund management fee, net (Note C)	19,870	33,580
General and administrative expenses	4,391	5,142
Operating expenses	28,286	43,177
NET INCOME (LOSS)	(13,457)	(40,751)
Net income (loss) allocated to assignees	(13,322)	(40,343)
Net income (loss) allocated to general partner	$ (135)	$ (408)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.01)
Series Thirty Three [Member]
Income
Interest income	$ 91	$ 599
Other income	0	1,800
Revenues	91	2,399
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	3,150	3,685
Fund management fee, net (Note C)	9,898	9,898
General and administrative expenses	3,692	3,811
Operating expenses	16,740	17,394
NET INCOME (LOSS)	(16,649)	(14,995)
Net income (loss) allocated to assignees	(16,483)	(14,845)
Net income (loss) allocated to general partner	$ (166)	$ (150)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Thirty Four [Member]
Income
Interest income	$ 339	$ 472
Other income	0	11,691
Revenues	339	12,163
Share of income (loss) from Operating Partnerships (Note D)	0	27,500
Expenses
Professional fees	3,675	4,400
Fund management fee, net (Note C)	12,366	11,317
General and administrative expenses	3,993	4,432
Operating expenses	20,034	20,149
NET INCOME (LOSS)	(19,695)	19,514
Net income (loss) allocated to assignees	(19,498)	19,319
Net income (loss) allocated to general partner	$ (197)	$ 195
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ 0.01
Series Thirty Five [Member]
Income
Interest income	$ 1,454	$ 1,321
Other income	0	4,893
Revenues	1,454	6,214
Share of income (loss) from Operating Partnerships (Note D)	0	2,294,803
Expenses
Professional fees	3,500	4,057
Fund management fee, net (Note C)	17,481	(7,607)
General and administrative expenses	3,977	4,409
Operating expenses	24,958	859
NET INCOME (LOSS)	(23,504)	2,300,158
Net income (loss) allocated to assignees	(23,269)	2,277,156
Net income (loss) allocated to general partner	$ (235)	$ 23,002
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ 0.69
Series Thirty Six [Member]
Income
Interest income	$ 1,405	$ 563
Other income	2,674	1,146
Revenues	4,079	1,709
Share of income (loss) from Operating Partnerships (Note D)	0	2,417,303
Expenses
Professional fees	3,675	3,835
Fund management fee, net (Note C)	5,716	(18,208)
General and administrative expenses	3,570	3,483
Operating expenses	12,961	(10,890)
NET INCOME (LOSS)	(8,882)	2,429,902
Net income (loss) allocated to assignees	(8,793)	2,405,603
Net income (loss) allocated to general partner	$ (89)	$ 24,299
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ 1.16
Series Thirty Seven [Member]
Income
Interest income	$ 1,161	$ 172
Other income	11,225	4,811
Revenues	12,386	4,983
Share of income (loss) from Operating Partnerships (Note D)	0	2,500
Expenses
Professional fees	3,325	3,509
Fund management fee, net (Note C)	4,483	28,812
General and administrative expenses	3,631	3,658
Operating expenses	11,439	35,979
NET INCOME (LOSS)	947	(28,496)
Net income (loss) allocated to assignees	938	(28,211)
Net income (loss) allocated to general partner	$ 9	$ (285)
Net income (loss) per BAC (in dollars per unit)	$ 0.00	$ (0.01)
Series Thirty Eight [Member]
Income
Interest income	$ 735	$ 154
Other income	386	31,791
Revenues	1,121	31,945
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	4,025	4,036
Fund management fee, net (Note C)	18,234	27,782
General and administrative expenses	3,692	3,753
Operating expenses	25,951	35,571
NET INCOME (LOSS)	(24,830)	(3,626)
Net income (loss) allocated to assignees	(24,582)	(3,590)
Net income (loss) allocated to general partner	$ (248)	$ (36)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.00)
Series Thirty Nine [Member]
Income
Interest income	$ 247	$ 127
Other income	386	660
Revenues	633	787
Share of income (loss) from Operating Partnerships (Note D)	0	22,500
Expenses
Professional fees	3,675	3,845
Fund management fee, net (Note C)	1,709	17,017
General and administrative expenses	3,560	3,487
Operating expenses	8,944	24,349
NET INCOME (LOSS)	(8,311)	(1,062)
Net income (loss) allocated to assignees	(8,228)	(1,051)
Net income (loss) allocated to general partner	$ (83)	$ (11)
Net income (loss) per BAC (in dollars per unit)	$ (0.00)	$ (0.00)
Series Forty [Member]
Income
Interest income	$ 29	$ 132
Other income	1,660	0
Revenues	1,689	132
Share of income (loss) from Operating Partnerships (Note D)	0	20,500
Expenses
Professional fees	4,900	5,079
Fund management fee, net (Note C)	29,766	37,216
General and administrative expenses	3,714	3,712
Operating expenses	38,380	46,007
NET INCOME (LOSS)	(36,691)	(25,375)
Net income (loss) allocated to assignees	(36,324)	(25,121)
Net income (loss) allocated to general partner	$ (367)	$ (254)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Forty One [Member]
Income
Interest income	$ 151	$ 223
Other income	11,143	0
Revenues	11,294	223
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	5,599	5,627
Fund management fee, net (Note C)	52,990	50,199
General and administrative expenses	3,944	4,039
Operating expenses	62,533	59,865
NET INCOME (LOSS)	(51,239)	(59,642)
Net income (loss) allocated to assignees	(50,727)	(59,046)
Net income (loss) allocated to general partner	$ (512)	$ (596)
Net income (loss) per BAC (in dollars per unit)	$ (0.02)	$ (0.02)
Series Forty Two [Member]
Income
Interest income	$ 345	$ 2,039
Other income	0	0
Revenues	345	2,039
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	5,018	5,945
Fund management fee, net (Note C)	41,835	42,002
General and administrative expenses	3,775	3,798
Operating expenses	50,628	51,745
NET INCOME (LOSS)	(50,283)	(49,706)
Net income (loss) allocated to assignees	(49,780)	(49,209)
Net income (loss) allocated to general partner	$ (503)	$ (497)
Net income (loss) per BAC (in dollars per unit)	$ (0.02)	$ (0.02)
Series Forty Three [Member]
Income
Interest income	$ 99	$ 2,046
Other income	34,072	1,759
Revenues	34,171	3,805
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	5,843	6,332
Fund management fee, net (Note C)	44,950	31,651
General and administrative expenses	4,113	4,387
Operating expenses	54,906	42,370
NET INCOME (LOSS)	(20,735)	(38,565)
Net income (loss) allocated to assignees	(20,528)	(38,179)
Net income (loss) allocated to general partner	$ (207)	$ (386)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ 0.01
Series Forty Four [Member]
Income
Interest income	$ 7	$ 12
Other income	0	13,649
Revenues	7	13,661
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	4,025	4,301
Fund management fee, net (Note C)	56,826	61,470
General and administrative expenses	3,786	3,794
Operating expenses	64,637	69,565
NET INCOME (LOSS)	(64,630)	(55,904)
Net income (loss) allocated to assignees	(63,984)	(55,345)
Net income (loss) allocated to general partner	$ (646)	$ (559)
Net income (loss) per BAC (in dollars per unit)	$ (0.02)	$ (0.02)
Series Forty Five [Member]
Income
Interest income	$ 366	$ 311
Other income	21,605	28,826
Revenues	21,971	29,137
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	12,087	7,234
Fund management fee, net (Note C)	65,811	40,120
General and administrative expenses	4,632	5,366
Operating expenses	82,530	52,720
NET INCOME (LOSS)	(60,559)	(23,583)
Net income (loss) allocated to assignees	(59,953)	(23,347)
Net income (loss) allocated to general partner	$ (606)	$ (236)
Net income (loss) per BAC (in dollars per unit)	$ (0.01)	$ (0.01)
Series Forty Six [Member]
Income
Interest income	$ 227	$ 161
Other income	0	13,552
Revenues	227	13,713
Share of income (loss) from Operating Partnerships (Note D)	0	0
Expenses
Professional fees	4,900	4,932
Fund management fee, net (Note C)	52,299	57,007
General and administrative expenses	3,984	4,363
Operating expenses	61,183	66,302
NET INCOME (LOSS)	(60,956)	(52,589)
Net income (loss) allocated to assignees	(60,346)	(52,063)
Net income (loss) allocated to general partner	$ (610)	$ (526)
Net income (loss) per BAC (in dollars per unit)	$ (0.02)	$ (0.02)