Condensed Consolidated Statements of Partners' Capital (Unaudited) - USD ($)		Total	Tier 2 [Member]	General Partner [Member]	General Partner [Member] Tier 2 [Member]	BUCs - Restricted and Unrestricted [Member]	BUCs - Restricted and Unrestricted [Member] Tier 2 [Member]	Number of BUCs - Restricted and Unrestricted [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2020		$ 359,772,042		$ 934,892		$ 358,837,150			$ 132,594,007
Partners' Capital Account, Units at Dec. 31, 2020								20,274,558
Distributions paid or accrued:
Regular distribution	[1]	(3,401,314)		(34,013)		(3,367,301)
Distribution of (income) loss (Note 3)	[1]		$ (2,809,106)		$ (702,277)		$ (2,106,829)
Net income (loss) allocable to Partners		6,275,091		736,936		5,538,155
Restricted unit compensation expense		78,114		781		77,333
Unrealized gain (loss) on securities		(16,298,797)		(162,988)		(16,135,809)			(16,298,797)
Unrealized loss on bond purchase commitments		(120,970)		(1,210)		(119,760)			(120,970)
Balance at Mar. 31, 2021		343,495,060		772,121		342,722,939			116,174,240
Partners' Capital Account, Units at Mar. 31, 2021								20,274,558
Balance at Dec. 31, 2021		372,412,027		765,550		371,646,477			114,040,260
Partners' Capital Account, Units at Dec. 31, 2021								22,094,159
Distributions paid or accrued:
Distribution of (income) loss (Note 3)	[1]		$ (9,721,430)		$ (2,430,358)		$ (7,291,072)
Net income (loss) allocable to Partners		25,546,274		2,737,044		22,809,230
Restricted unit compensation expense		173,898		1,739		172,159
Unrealized gain (loss) on securities		(47,751,656)		(477,517)		(47,274,139)			(47,751,656)
Unrealized loss on bond purchase commitments		(819,081)		(8,191)		(810,890)			(819,081)
Balance at Mar. 31, 2022		$ 339,840,032		$ 588,267		$ 339,251,765			$ 65,469,523
Partners' Capital Account, Units at Mar. 31, 2022								22,094,159

[1] * On April 1, 2022, the Partnership effected a one-for-three reverse unit split of its outstanding BUCs. Per BUC amounts set forth in the Condensed Consolidated Statements of Partners’ Capital have been adjusted to reflect the one-for-three reverse unit split on a retroactive basis.