XML 73 R65.htm IDEA: XBRL DOCUMENT
v3.25.1

Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($) | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 997,159,975 |  | $ 994,958,009 |
Cumulative Unrealized Gain |  | 30,612,431 |  | 35,493,084 |
Cumulative Unrealized Loss |  | (5,208,442) |  | (3,967,297) |
Estimated Fair Value |  | $ 1,022,563,964 |  | $ 1,026,483,796 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Safford [Member] | Series A [Member] | AZ [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 43,075,176 | [1] | $ 37,435,466 | [2]
Cumulative Unrealized Gain |  | 1,457,148 | [1] | 1,523,170 | [2]
Estimated Fair Value |  | $ 44,532,324 | [1] | $ 38,958,636 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
40rty on Colony - Series P [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,961,756 | [1] | $ 5,962,217 | [2]
Cumulative Unrealized Gain |  | 445,276 | [1] | 459,328 | [2]
Estimated Fair Value |  | $ 6,407,032 | [1] | $ 6,421,545 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Courtyard [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,641,225 | [3] | $ 9,668,469 | [4]
Cumulative Unrealized Gain |  | 424,065 | [3] | 449,017 | [4]
Estimated Fair Value |  | $ 10,065,290 | [3] | $ 10,117,486 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Glenview Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,231,560 | [5] | $ 4,248,118 | [6]
Cumulative Unrealized Gain |  | 170,523 | [5] | 170,362 | [6]
Estimated Fair Value |  | $ 4,402,083 | [5] | $ 4,418,480 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harmony Court Bakersfield [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,515,325 | [3] | $ 3,525,258 | [4]
Cumulative Unrealized Gain |  | 128,377 | [3] | 127,289 | [4]
Estimated Fair Value |  | $ 3,643,702 | [3] | $ 3,652,547 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harmony Terrace [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,509,030 | [3] | $ 6,527,329 | [4]
Cumulative Unrealized Gain |  | 270,654 | [3] | 288,190 | [4]
Estimated Fair Value |  | $ 6,779,684 | [3] | $ 6,815,519 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harden Ranch [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,230,374 | [7] | $ 6,256,135 | [8]
Cumulative Unrealized Gain |  | 250,823 | [7] | 260,476 | [8]
Estimated Fair Value |  | $ 6,481,197 | [7] | $ 6,516,611 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Las Palmas II [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 1,594,406 | [3] | $ 1,598,957 | [4]
Cumulative Unrealized Gain |  | 62,032 | [3] | 61,427 | [4]
Estimated Fair Value |  | $ 1,656,438 | [3] | $ 1,660,384 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Lutheran Gardens [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  |  |  | $ 10,352,000 |
Estimated Fair Value |  |  |  | $ 10,352,000 |
Investment, Type [Extensible Enumeration] |  |  |  | Mortgage Revenue Bonds [Member] |
Montclair Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,292,473 | [5] | $ 2,301,443 | [6]
Cumulative Unrealized Gain |  | 98,170 | [5] | 98,596 | [6]
Estimated Fair Value |  | $ 2,390,643 | [5] | $ 2,400,039 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Montecito at Williams Ranch Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,356,436 | [7] | $ 7,374,111 | [8]
Cumulative Unrealized Gain |  | 381,634 | [7] | 424,400 | [8]
Estimated Fair Value |  | $ 7,738,070 | [7] | $ 7,798,511 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Montevista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,543,640 | [7] | $ 6,556,878 | [8]
Cumulative Unrealized Gain |  | 529,700 | [7] | 602,131 | [8]
Estimated Fair Value |  | $ 7,073,340 | [7] | $ 7,159,009 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Ocotillo Springs [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,446,769 | [7],[9] | $ 3,455,419 | [8],[10]
Cumulative Unrealized Loss |  | (277,352) | [7],[9] | (224,262) | [8],[10]
Estimated Fair Value |  | $ 3,169,417 | [7],[9] | $ 3,231,157 | [8],[10]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Ocotillo Springs [Member] | Series A-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 495,631 | [7] | $ 496,351 | [8]
Cumulative Unrealized Gain |  | 54,122 | [7] | 64,598 | [8]
Estimated Fair Value |  | $ 549,753 | [7] | $ 560,949 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
CCBA Senior Garden Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,710,681 | [7],[11] | $ 3,720,209 | [8],[12]
Cumulative Unrealized Loss |  | (117,519) | [7],[11] | (58,814) | [8],[12]
Estimated Fair Value |  | $ 3,593,162 | [7],[11] | $ 3,661,395 | [8],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Copper Gate Apartments [Member] | IN [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,715,000 | [7] | $ 4,715,000 | [8]
Estimated Fair Value |  | $ 4,715,000 | [7] | $ 4,715,000 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Residency at Empire - Series BB-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,105,551 | [1] | $ 14,109,248 | [2]
Cumulative Unrealized Gain |  | 497,953 | [1] | 491,616 | [2]
Estimated Fair Value |  | $ 14,603,504 | [1] | $ 14,600,864 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-2 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,000,000 | [1] | $ 4,000,000 | [2]
Cumulative Unrealized Gain |  | 172,430 | [1] | 171,675 | [2]
Estimated Fair Value |  | $ 4,172,430 | [1] | $ 4,171,675 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-3 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,000,000 | [1] | $ 14,000,000 | [2]
Cumulative Unrealized Gain |  | 525,382 | [1] | 510,453 | [2]
Estimated Fair Value |  | $ 14,525,382 | [1] | $ 14,510,453 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-4 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 28,650,000 | [1] | $ 21,200,000 | [2]
Cumulative Unrealized Gain |  | 318,949 | [1] | 275,702 | [2]
Estimated Fair Value |  | $ 28,968,949 | [1] | $ 21,475,702 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,076,709 | [1],[11] | $ 9,078,496 | [2],[12]
Cumulative Unrealized Loss |  | (414,154) | [1],[11] | (194,816) | [2],[12]
Estimated Fair Value |  | $ 8,662,555 | [1],[11] | $ 8,883,680 | [2],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-2 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,500,000 | [1],[11] | $ 7,500,000 | [2],[12]
Cumulative Unrealized Loss |  | (281,205) | [1],[11] | (96,933) | [2],[12]
Estimated Fair Value |  | $ 7,218,795 | [1],[11] | $ 7,403,067 | [2],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-3 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 26,080,000 | [1],[11] | $ 26,080,000 | [2],[12]
Cumulative Unrealized Loss |  | (517,655) | [1],[11] | (99,928) | [2],[12]
Estimated Fair Value |  | $ 25,562,345 | [1],[11] | $ 25,980,072 | [2],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-4 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 16,420,000 | [1] | $ 16,420,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 0 |
Estimated Fair Value |  | $ 16,420,000 | [1] | $ 16,420,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-5 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,000,000 | [1] | $ 5,000,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 0 |
Estimated Fair Value |  | $ 5,000,000 | [1] | $ 5,000,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Solano Vista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,586,308 | [7] | $ 2,591,588 | [8]
Cumulative Unrealized Gain |  | 201,005 | [7] | 172,312 | [8]
Estimated Fair Value |  | $ 2,787,313 | [7] | $ 2,763,900 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Residency at the Mayer [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 29,555,807 | [1] | $ 29,556,596 | [2]
Estimated Fair Value |  | $ 29,555,807 | [1] | $ 29,556,596 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Mayer [Member] | Series M [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,500,000 | [1] | $ 11,500,000 | [2]
Estimated Fair Value |  | $ 11,500,000 | [1] | $ 11,500,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
San Vicente [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,287,580 | [3] | $ 3,296,965 | [4]
Cumulative Unrealized Gain |  | 127,907 | [3] | 135,060 | [4]
Estimated Fair Value |  | $ 3,415,487 | [3] | $ 3,432,025 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Santa Fe Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,777,245 | [5] | $ 2,788,112 | [6]
Cumulative Unrealized Gain |  | 122,443 | [5] | 123,270 | [6]
Estimated Fair Value |  | $ 2,899,688 | [5] | $ 2,911,382 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons at Simi Valley [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,011,049 | [3] | $ 4,025,911 | [4]
Cumulative Unrealized Gain |  | 268,179 | [3] | 272,883 | [4]
Estimated Fair Value |  | $ 4,279,228 | [3] | $ 4,298,794 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons Lakewood [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,933,532 | [3] | $ 6,953,024 | [4]
Cumulative Unrealized Gain |  | 288,306 | [3] | 306,985 | [4]
Estimated Fair Value |  | $ 7,221,838 | [3] | $ 7,260,009 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons San Juan Capistrano [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,673,803 | [3] | $ 11,706,622 | [4]
Cumulative Unrealized Gain |  | 485,413 | [3] | 516,863 | [4]
Estimated Fair Value |  | $ 12,159,216 | [3] | $ 12,223,485 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Summerhill [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,053,332 | [3] | $ 6,070,437 | [4]
Cumulative Unrealized Gain |  | 14,945 | [3] | 20,122 | [4]
Estimated Fair Value |  | $ 6,068,277 | [3] | $ 6,090,559 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Sycamore Walk [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,317,142 | [3] | $ 3,330,230 | [4]
Cumulative Unrealized Gain |  | 88,329 | [3] | 44,181 | [4]
Estimated Fair Value |  | $ 3,405,471 | [3] | $ 3,374,411 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Village at Madera [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,907,447 | [3] | $ 2,915,662 | [4]
Cumulative Unrealized Gain |  | 106,177 | [3] | 112,779 | [4]
Estimated Fair Value |  | $ 3,013,624 | [3] | $ 3,028,441 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Tyler Park Townhomes [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,422,984 | [7] | $ 5,445,686 | [8]
Cumulative Unrealized Gain | [8] |  |  | 0 |
Estimated Fair Value |  | $ 5,422,984 | [7] | $ 5,445,686 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at Hanford Square [Member] | Series H [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,400,000 | [1] | $ 10,400,000 | [2]
Cumulative Unrealized Gain |  | 603,812 | [1] | 619,721 | [2]
Estimated Fair Value |  | $ 11,003,812 | [1] | $ 11,019,721 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Vineyard Gardens | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,830,894 | [7] | $ 3,839,951 | [8]
Cumulative Unrealized Gain |  | 253,969 | [7] | 281,057 | [8]
Estimated Fair Value |  | $ 4,084,863 | [7] | $ 4,121,008 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Westside Village Market [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,543,911 | [7] | $ 3,558,747 | [8]
Cumulative Unrealized Gain |  | 133,672 | [7] | 132,773 | [8]
Estimated Fair Value |  | $ 3,677,583 | [7] | $ 3,691,520 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Handsel Morgan Village Apartments [Member] | GA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,150,000 | [1] | $ 2,150,000 | [2]
Cumulative Unrealized Gain |  | 127,938 | [1] | 162,887 | [2]
Estimated Fair Value |  | $ 2,277,938 | [1] | $ 2,312,887 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
MaryAlice Circle Apartments [Member] | GA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,900,000 | [1] | $ 5,900,000 | [2]
Cumulative Unrealized Gain |  | 399,128 | [1] | 496,763 | [2]
Estimated Fair Value |  | $ 6,299,128 | [1] | $ 6,396,763 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Renaissance [Member] | Series A [Member] | LA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,220,816 | [5],[11] | $ 10,263,789 | [6],[12]
Cumulative Unrealized Loss |  | (1,120,559) | [5],[11] | (836,645) | [6],[12]
Estimated Fair Value |  | $ 9,100,257 | [5],[11] | $ 9,427,144 | [6],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Live 929 Apartments [Member] | Series 2022A [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 58,616,475 | [1] | $ 58,560,655 | [2]
Cumulative Unrealized Gain |  | 3,807,770 | [1] | 3,547,694 | [2]
Estimated Fair Value |  | $ 62,424,245 | [1] | $ 62,108,349 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Woodington Gardens Apartments [Member] | Series A-1 [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 31,150,000 | [1] | $ 31,150,000 | [2]
Cumulative Unrealized Gain |  | 3,043,049 | [1] | 3,112,265 | [2]
Estimated Fair Value |  | $ 34,193,049 | [1] | $ 34,262,265 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Meadow Valley [Member] | MI [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 42,157,948 | [1],[13] | $ 41,162,263 | [2],[14]
Cumulative Unrealized Loss |  | (1,698,936) | [1],[13] | (1,859,135) | [2],[14]
Estimated Fair Value |  | $ 40,459,012 | [1],[13] | $ 39,303,128 | [2],[14]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Jackson Manor Apartments [member] | MS [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,769,999 | [7],[11] | $ 4,781,136 | [8]
Cumulative Unrealized Gain | [8] |  |  | 19,919 |
Cumulative Unrealized Loss | [7],[11] | (61,666) |  |  |
Estimated Fair Value |  | $ 4,708,333 | [7],[11] | $ 4,801,055 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village Point [Member] | NJ [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 23,000,000 | [9],[15] | $ 23,000,000 | [12],[16]
Cumulative Unrealized Loss |  | (416,949) | [9],[15] | (447,248) | [12],[16]
Estimated Fair Value |  | $ 22,583,051 | [9],[15] | $ 22,552,752 | [12],[16]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Wellspring Apartments [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,850,860 | [7] | $ 3,880,455 | [8]
Cumulative Unrealized Gain |  | 60,569 | [7] | 119,584 | [8]
Estimated Fair Value |  | $ 3,911,429 | [7] | $ 4,000,039 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Silver Moon [Member] | Series A [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,377,683 | [5] | $ 7,398,857 | [6]
Cumulative Unrealized Gain |  | 549,683 | [5] | 571,694 | [6]
Estimated Fair Value |  | $ 7,927,366 | [5] | $ 7,970,551 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at Avalon [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 15,628,902 | [7] | $ 15,665,803 | [8]
Cumulative Unrealized Gain |  | 1,108,750 | [7] | 1,241,389 | [8]
Estimated Fair Value |  | $ 16,737,652 | [7] | $ 16,907,192 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Columbia Gardens [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,098,098 | [3] | $ 12,150,488 | [4]
Cumulative Unrealized Gain |  | 501,376 | [3] | 502,113 | [4]
Estimated Fair Value |  | $ 12,599,474 | [3] | $ 12,652,601 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Companion at Thornhill Apartments [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,443,818 | [3] | $ 10,484,096 | [4]
Cumulative Unrealized Gain |  | 331,310 | [3] | 338,831 | [4]
Estimated Fair Value |  | $ 10,775,128 | [3] | $ 10,822,927 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Ivy Apartments [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 30,555,975 | [1],[9] | $ 30,558,423 | [2]
Cumulative Unrealized Gain | [2] |  |  | 822,638 |
Cumulative Unrealized Loss | [1],[9] | (55,975) |  |  |
Estimated Fair Value |  | $ 30,500,000 | [1],[9] | $ 31,381,061 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Palms at Premier Park Apartment [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 17,517,830 | [7] | $ 17,590,997 | [8]
Cumulative Unrealized Gain | [8] |  |  | 27,389 |
Estimated Fair Value |  | $ 17,517,830 | [7] | $ 17,618,386 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Park at Sondrio [Member] | Series 2022A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 38,100,000 | [1] | $ 38,100,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 1,260,209 |
Estimated Fair Value |  | $ 38,100,000 | [1] | $ 39,360,209 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Park at Vietti [Member] | Series 2022A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 26,985,000 | [1] | $ 26,985,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 952,281 |
Estimated Fair Value |  | $ 26,985,000 | [1] | $ 27,937,281 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at River's Edge [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,454,389 | [3] | $ 9,477,407 | [4]
Cumulative Unrealized Gain |  | 757,578 | [3] | 832,313 | [4]
Estimated Fair Value |  | $ 10,211,967 | [3] | $ 10,309,720 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Willow Run [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,929,967 | [3] | $ 11,981,345 | [4]
Cumulative Unrealized Gain |  | 493,859 | [3] | 494,536 | [4]
Estimated Fair Value |  | $ 12,423,826 | [3] | $ 12,475,881 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Windsor Shores Apartments [Member] | Series A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 21,545,000 | [1] | $ 21,545,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 718,755 |
Estimated Fair Value |  | $ 21,545,000 | [1] | $ 22,263,755 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Copperfield [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 13,172,704 | [1] | $ 13,215,029 | [2]
Cumulative Unrealized Gain |  | 493,187 | [1] | 485,574 | [2]
Estimated Fair Value |  | $ 13,665,891 | [1] | $ 13,700,603 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Crest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 8,584,243 | [1] | $ 8,621,036 | [2]
Cumulative Unrealized Gain |  | 458,591 | [1] | 471,417 | [2]
Estimated Fair Value |  | $ 9,042,834 | [1] | $ 9,092,453 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Crest [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 709,460 |  | $ 711,315 |
Cumulative Unrealized Gain |  | 24,394 |  | 24,748 |
Estimated Fair Value |  | $ 733,854 |  | $ 736,063 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Oaks [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,951,864 | [1] | $ 6,980,721 | [2]
Cumulative Unrealized Gain |  | 320,427 | [1] | 333,795 | [2]
Estimated Fair Value |  | $ 7,272,291 | [1] | $ 7,314,516 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Oaks [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 520,080 |  | $ 521,384 |
Cumulative Unrealized Gain |  | 13,701 |  | 14,194 |
Estimated Fair Value |  | $ 533,781 |  | $ 535,578 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Parkway [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,057,789 | [5] | $ 12,101,645 | [6]
Cumulative Unrealized Gain |  | 435,839 | [5] | 422,358 | [6]
Estimated Fair Value |  | $ 12,493,628 | [5] | $ 12,524,003 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Parkway [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 122,021 |  | $ 122,165 |
Cumulative Unrealized Gain |  | 12,776 |  | 13,232 |
Estimated Fair Value |  | $ 134,797 |  | $ 135,397 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Wilcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,992,188 | [1] | $ 5,008,228 | [2]
Cumulative Unrealized Gain |  | 159,910 | [1] | 155,503 | [2]
Estimated Fair Value |  | $ 5,152,098 | [1] | $ 5,163,731 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Wood Hollow [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 37,905,570 | [1] | $ 38,027,363 | [2]
Cumulative Unrealized Gain |  | 1,419,186 | [1] | 1,397,281 | [2]
Estimated Fair Value |  | $ 39,324,756 | [1] | $ 39,424,644 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar in 09 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,002,660 | [1] | $ 6,027,577 | [2]
Cumulative Unrealized Gain |  | 290,413 | [1] | 302,568 | [2]
Estimated Fair Value |  | $ 6,293,073 | [1] | $ 6,330,145 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar in 09 [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 429,019 |  | $ 430,095 |
Cumulative Unrealized Gain |  | 12,210 |  | 12,653 |
Estimated Fair Value |  | $ 441,229 |  | $ 442,748 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Boulevard [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,624,193 | [1] | $ 14,686,873 | [2]
Cumulative Unrealized Gain |  | 655,850 | [1] | 671,717 | [2]
Estimated Fair Value |  | $ 15,280,043 | [1] | $ 15,358,590 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Boulevard [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 421,563 |  | $ 422,666 |
Cumulative Unrealized Gain |  | 11,969 |  | 12,072 |
Estimated Fair Value |  | $ 433,532 |  | $ 434,738 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Hills [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,759,400 | [1] | $ 4,779,156 | [2]
Cumulative Unrealized Gain |  | 241,182 | [1] | 251,307 | [2]
Estimated Fair Value |  | $ 5,000,582 | [1] | $ 5,030,463 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Bruton Apartments [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 17,006,277 | [3],[11] | $ 17,050,526 | [4]
Cumulative Unrealized Loss | [3],[11] | (78,262) |  |  |
Estimated Fair Value |  | $ 16,928,015 | [3],[11] | $ 17,050,526 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Gulfgate [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 17,904,269 | [3] | $ 17,963,286 | [4]
Cumulative Unrealized Gain |  | 906,412 | [3] | 938,146 | [4]
Estimated Fair Value |  | $ 18,810,681 | [3] | $ 18,901,432 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Little York [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,542,787 | [3] | $ 12,584,132 | [4]
Cumulative Unrealized Gain |  | 691,831 | [3] | 716,639 | [4]
Estimated Fair Value |  | $ 13,234,618 | [3] | $ 13,300,771 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Williamcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 19,430,121 | [3] | $ 19,494,168 | [4]
Cumulative Unrealized Gain |  | 1,027,636 | [3] | 1,064,065 | [4]
Estimated Fair Value |  | $ 20,457,757 | [3] | $ 20,558,233 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Crossing at 1415 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,964,949 | [3] | $ 6,989,209 | [4]
Cumulative Unrealized Gain |  | 184,075 | [3] | 179,154 | [4]
Estimated Fair Value |  | $ 7,149,024 | [3] | $ 7,168,363 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Decatur-Angle [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 21,352,014 | [3],[11] | $ 21,412,592 | [4],[12]
Cumulative Unrealized Loss |  | (168,210) | [3],[11] | (149,516) | [4],[12]
Estimated Fair Value |  | $ 21,183,804 | [3],[11] | $ 21,263,076 | [4],[12]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Esperanza at Palo Alto [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 18,531,400 | [3] | $ 18,576,657 | [4]
Cumulative Unrealized Gain |  | 984,117 | [3] | 1,168,859 | [4]
Estimated Fair Value |  | $ 19,515,517 | [3] | $ 19,745,516 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Heights at 515 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,376,531 | [3] | $ 6,398,741 | [4]
Cumulative Unrealized Gain |  | 309,803 | [3] | 312,241 | [4]
Estimated Fair Value |  | $ 6,686,334 | [3] | $ 6,710,982 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Heritage Square [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,000,817 | [5] | $ 10,039,053 | [6]
Cumulative Unrealized Gain |  | 312,367 | [5] | 307,888 | [6]
Estimated Fair Value |  | $ 10,313,184 | [5] | $ 10,346,941 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Oaks at Georgetown [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,631,353 | [3] | $ 11,664,053 | [4]
Cumulative Unrealized Gain |  | 31,320 | [3] | 214,123 | [4]
Estimated Fair Value |  | $ 11,662,673 | [3] | $ 11,878,176 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
15 West Apartments [Member] | WA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,261,167 | [3] | $ 9,283,990 | [4]
Cumulative Unrealized Gain |  | 948,246 | [3] | 1,025,529 | [4]
Estimated Fair Value |  | $ 10,209,413 | [3] | $ 10,309,519 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Aventine Apartments [Member] | WA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,500,000 | [1] | $ 9,500,000 | [2]
Cumulative Unrealized Gain |  | 1,004,584 | [1] | 1,060,325 | [2]
Estimated Fair Value |  | $ 10,504,584 | [1] | $ 10,560,325 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
[1] | MRB held by Mizuho in a debt financing transaction, Note 13.
[2] | MRB held by Mizuho in a TOB trust financing transaction, Note 13.
[3] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[4] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[5] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[6] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[7] | 2024 PFA Securitization Bond associated with the 2024 PFA Securitization Transaction, Note 13.
[8] | 2024 PFA Securitization Bond associated with the 2024 PFA Securitization Transaction, Note 13.
[9] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of March 31, 2025, the MRB has been in an unrealized loss position for at least 12 months.
[10] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for at least 12 months.
[11] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of March 31, 2025, the MRB has been in an unrealized loss position for less than 12 months.
[12] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for less than 12 months.
[13] | The Partnership has a remaining MRB funding commitment of approximately $1.9 million as of March 31, 2025. The MRB and the unfunded MRB commitment are accounted for as available-for-sale securities and reported at fair value. The reported unrealized loss includes the unrealized loss on the current MRB carrying value (based on current fair value) as well as the unrealized loss on the Partnership’s remaining funding commitment outstanding as of March 31, 2025 (also based on current fair value). The Partnership determined the unrealized loss is a result of increasing market interest rates and that the cumulative unrealized loss is not considered a credit loss. As of March 31, 2025, the MRB has been in an unrealized loss position for more than 12 months.
[14] | The Partnership has a remaining MRB funding commitment of approximately $2.9 million as of December 31, 2024. The MRB and the unfunded MRB commitment are accounted for as available-for-sale securities and reported at fair value. The reported unrealized loss includes the unrealized loss on the current MRB carrying value (based on current fair value) as well as the unrealized loss on the Partnership’s remaining funding commitment outstanding as of December 31, 2024 (also based on current fair value). The Partnership determined the unrealized loss is a result of increasing market interest rates and that the cumulative unrealized loss is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for more than 12 months.
[15] | MRB held by Barclays in a debt financing transaction, Note 13.
[16] | MRB held by Barclays in a debt financing transaction, Note 13.

X
- Definition Investment owned unrecognized unrealized appreciations. + References No definition available. + Details
Name: | ghi_InvestmentOwnedUnrecognizedUnrealizedAppreciations
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment owned unrecognized unrealized depreciations. + References No definition available. + Details
Name: | ghi_InvestmentOwnedUnrecognizedUnrealizedDepreciations
Namespace Prefix: | ghi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cost of the investment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477439/946-210-55-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 8)(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 5)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 19 -Subparagraph (3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-19 + Details
Name: | us-gaap_InvestmentOwnedAtCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in security owned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(11)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477439/946-210-55-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-2 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(2)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(2)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-12A(Column A)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 2)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 1)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-12A(Column C)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-2 + Details
Name: | us-gaap_InvestmentTypeExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_TheSaffordMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_AZ
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_FortyOnColonySeriesPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_CourtyardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_GlenviewApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HarmonyCourtBakersfieldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HarmonyTerraceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HardenRanchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_LasPalmasTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_LutheranGardensMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MontclairApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MontecitoAtWilliamsRanchApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MontevistaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_OcotilloSpringsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_FirstMortgageOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_CCBASeniorGardenApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_CopperGateApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_IN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtEmpireBbOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtEmpireBbTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtEmpireBbThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtEmpireBbFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtTheEntrepreneurJOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtTheEntrepreneurJTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtTheEntrepreneurJThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtTheEntrepreneurJFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtEntrepreneurSeriesJFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SolanoVistaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ResidencyAtTheMayerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_SeriesMMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SanVicenteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SantaFeApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SeasonsAtSimiValleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SeasonsLakewoodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SeasonsSanJuanCapistranoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SummerhillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SycamoreWalkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VillageAtMaderaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_TylerParkTownhomesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VillageAtHanfordSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_SeriesHMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VineyardGardensMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_WestsideVillageMarketMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HandselMorganVillageApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_GA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MaryaliceCircleApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_RenaissanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_LA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_Live929ApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_ThirdMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_WoodingtonGardensApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_MeadowValleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MI
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_JacksonManorApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MS
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VillagePointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NJ
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_WellspringApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_SilverMoonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NM
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VillageAtAvalonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ColumbiaGardensMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_CompanionAtThornHillApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_TheIvyApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_PalmsAtPremierParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_TheParkAtSondrioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_TheParkAtViettiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_VillageAtRiversEdgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_WillowRunMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_WindsorShoresApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtCopperfieldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtCrestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_SecondMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtOaksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtParkwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtWilcrestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarAtWoodHollowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarIn09Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarOnBoulevardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AvistarOnHillsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_BrutonApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ConcordAtGulfgateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ConcordAtLittleYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_ConcordAtWilliamcrestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_CrossingAtOneThousandFourHundredFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_DecaturAngleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_EsperanzaAtPaloAltoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HeightsAtHeightsAtFiveHundredFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_HeritageSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_OaksAtGeorgetownMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_FifteenWestApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_WA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_AventineApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |