XML 102 R68.htm IDEA: XBRL DOCUMENT
v3.22.4

Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Mortgage Revenue Bonds Held In Trust [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 718,413,130 |  | $ 639,116,502 |
Cumulative Unrealized Gain |  | 45,127,126 |  | 111,818,346 |
Cumulative Unrealized Loss |  | (331,311) |  |  |
Estimated Fair Value |  | 763,208,945 |  | 750,934,848 |
Mortgage Revenue Bonds Held In Trust [Member] | Courtyard [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,874,603 | [1] | 9,970,209 | [2]
Cumulative Unrealized Gain |  | 888,242 | [1] | 2,060,480 | [2]
Estimated Fair Value |  | 10,762,845 | [1] | 12,030,689 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Glenview Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,372,370 | [3] | 4,429,350 | [4]
Cumulative Unrealized Gain |  | 309,570 | [3] | 863,955 | [4]
Estimated Fair Value |  | 4,681,940 | [3] | 5,293,305 | [4]
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Court Bakersfield [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,600,418 | [1] | 3,635,277 | [2]
Cumulative Unrealized Gain |  | 274,456 | [1] | 720,308 | [2]
Estimated Fair Value |  | 3,874,874 | [1] | 4,355,585 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Terrace [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,665,787 | [1] | 6,730,004 | [2]
Cumulative Unrealized Gain |  | 625,752 | [1] | 1,425,757 | [2]
Estimated Fair Value |  | 7,291,539 | [1] | 8,155,761 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Harden Ranch [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,449,455 | [5] | 6,538,111 | [6]
Cumulative Unrealized Gain |  | 581,466 | [5] | 1,285,747 | [6]
Estimated Fair Value |  | 7,030,921 | [5] | 7,823,858 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Las Palmas II [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 1,633,397 | [1] | 1,649,370 | [2]
Cumulative Unrealized Gain |  | 140,681 | [1] | 332,704 | [2]
Estimated Fair Value |  | 1,774,078 | [1] | 1,982,074 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Lutheran Gardens [Member] | NC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [7] | 10,352,000 |  |  |
Cumulative Unrealized Gain | [7] | 127,107 |  |  |
Estimated Fair Value | [7] | 10,479,107 |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Montclair Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,368,757 | [3] | 2,399,626 | [4]
Cumulative Unrealized Gain |  | 199,617 | [3] | 446,912 | [4]
Estimated Fair Value |  | 2,568,374 | [3] | 2,846,538 | [4]
Mortgage Revenue Bonds Held In Trust [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 |  | 7,507,111 | [7] | 7,568,334 | [8]
Cumulative Unrealized Gain |  | 834,292 | [7] | 1,983,454 | [8]
Estimated Fair Value |  | 8,341,403 | [7] | 9,551,788 | [8]
Mortgage Revenue Bonds Held In Trust [Member] | Montevista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,656,219 | [7] | 6,701,776 | [8]
Cumulative Unrealized Gain |  | 902,690 | [7] | 2,114,978 | [8]
Estimated Fair Value |  | 7,558,909 | [7] | 8,816,754 | [8]
Mortgage Revenue Bonds Held In Trust [Member] | Ocotillo Springs [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,090,000 | [7],[9] | 15,000,000 | [8]
Cumulative Unrealized Gain | [8] |  |  | 271,172 |
Cumulative Unrealized Loss | [7],[9] | (331,311) |  |  |
Estimated Fair Value |  | 10,758,689 | [7],[9] | 15,271,172 | [8]
Mortgage Revenue Bonds Held In Trust [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 | [7] | 9,088,496 |  |  |
Cumulative Unrealized Gain | [7] | 122,815 |  |  |
Estimated Fair Value | [7] | 9,211,311 |  |  |
Mortgage Revenue Bonds Held In Trust [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] | 7,500,000 |  |  |
Cumulative Unrealized Gain | [7] | 176,092 |  |  |
Estimated Fair Value | [7] | 7,676,092 |  |  |
Mortgage Revenue Bonds Held In Trust [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 | [7] | 3,900,000 |  |  |
Cumulative Unrealized Gain | [7] | 726,834 |  |  |
Estimated Fair Value | [7] | 4,626,834 |  |  |
Mortgage Revenue Bonds Held In Trust [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 | [7] | 26,067,585 |  |  |
Estimated Fair Value | [7] | 26,067,585 |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | San Vicente [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,367,978 | [1] | 3,400,913 | [2]
Cumulative Unrealized Gain |  | 255,787 | [1] | 671,681 | [2]
Estimated Fair Value |  | 3,623,765 | [1] | 4,072,594 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Santa Fe Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,869,660 | [3] | 2,907,057 | [4]
Cumulative Unrealized Gain |  | 216,000 | [3] | 567,028 | [4]
Estimated Fair Value |  | 3,085,660 | [3] | 3,474,085 | [4]
Mortgage Revenue Bonds Held In Trust [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 |  | 4,137,438 | [1] | 4,188,582 | [2]
Cumulative Unrealized Gain |  | 522,910 | [1] | 1,011,623 | [2]
Estimated Fair Value |  | 4,660,348 | [1] | 5,200,205 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Seasons Lakewood [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,100,512 | [1] | 7,168,917 | [2]
Cumulative Unrealized Gain |  | 666,562 | [1] | 1,518,742 | [2]
Estimated Fair Value |  | 7,767,074 | [1] | 8,687,659 | [2]
Mortgage Revenue Bonds Held In Trust [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 |  | 11,954,944 | [1] | 12,070,116 | [2]
Cumulative Unrealized Gain |  | 1,038,904 | [1] | 2,557,065 | [2]
Estimated Fair Value |  | 12,993,848 | [1] | 14,627,181 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Summerhill [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,199,861 | [1] | 6,259,888 | [2]
Cumulative Unrealized Gain |  | 265,296 | [1] | 1,187,464 | [2]
Estimated Fair Value |  | 6,465,157 | [1] | 7,447,352 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Sycamore Walk [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,428,986 | [1] | 3,474,617 | [2]
Cumulative Unrealized Gain |  | 124,598 | [1] | 696,090 | [2]
Estimated Fair Value |  | 3,553,584 | [1] | 4,170,707 | [2]
Mortgage Revenue Bonds Held In Trust [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 |  | 2,977,825 | [1] | 3,006,656 | [2]
Cumulative Unrealized Gain |  | 247,354 | [1] | 621,367 | [2]
Estimated Fair Value |  | 3,225,179 | [1] | 3,628,023 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Tyler Park Townhomes [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 5,616,043 | [5] | 5,694,168 | [6]
Cumulative Unrealized Gain |  | 264,300 | [5] | 691,137 | [6]
Estimated Fair Value |  | 5,880,343 | [5] | 6,385,305 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Vineyard Gardens | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,908,104 | [7] | 3,939,476 | [8]
Cumulative Unrealized Gain |  | 514,719 | [7] | 987,782 | [8]
Estimated Fair Value |  | 4,422,823 | [7] | 4,927,258 | [8]
Mortgage Revenue Bonds Held In Trust [Member] | Westside Village Market [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,670,075 | [5] | 3,721,129 | [6]
Cumulative Unrealized Gain |  | 267,369 | [5] | 701,915 | [6]
Estimated Fair Value |  | 3,937,444 | [5] | 4,423,044 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Brookstone [Member] | IL [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,286,052 | [10] | 7,334,161 | [11]
Cumulative Unrealized Gain |  | 1,286,871 | [10] | 1,903,086 | [11]
Estimated Fair Value |  | 8,572,923 | [10] | 9,237,247 | [11]
Mortgage Revenue Bonds Held In Trust [Member] | Copper Gate Apartments [Member] | IN [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,840,000 | [5] | 4,900,000 | [6]
Cumulative Unrealized Gain |  | 117,014 | [5] | 433,436 | [6]
Estimated Fair Value |  | 4,957,014 | [5] | 5,333,436 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Renaissance [Member] | Series A [Member] | LA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,585,375 | [3] | 10,732,295 | [4]
Cumulative Unrealized Gain |  | 645,412 | [3] | 4,172,381 | [4]
Estimated Fair Value |  | 11,230,787 | [3] | 14,904,676 | [4]
Mortgage Revenue Bonds Held In Trust [Member] | Live 929 Apartments [Member] | 2014 Series A [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [8] |  |  | 36,169,147 |
Cumulative Unrealized Gain | [8] |  |  | 573,155 |
Estimated Fair Value | [8] |  |  | 36,742,302 |
Mortgage Revenue Bonds Held In Trust [Member] | Live 929 Apartments [Member] | Series 2022A [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [7] | 58,107,262 |  |  |
Cumulative Unrealized Gain | [7] | 2,217,857 |  |  |
Estimated Fair Value | [7] | 60,325,119 |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Jackson Manor Apartments [Member] | MS [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,900,000 | [7] | 4,900,000 | [8]
Estimated Fair Value |  | 6,900,000 | [7] | 4,900,000 | [8]
Mortgage Revenue Bonds Held In Trust [Member] | Gateway Village [Member] | NC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [8] |  |  | 2,600,000 |
Cumulative Unrealized Gain | [8] |  |  | 90,861 |
Estimated Fair Value | [8] |  |  | 2,690,861 |
Mortgage Revenue Bonds Held In Trust [Member] | Greens Property [Member] | Series A [Member] | NC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,599,000 | [5] | 7,719,000 | [6]
Cumulative Unrealized Gain |  | 597 | [5] | 281,953 | [6]
Estimated Fair Value |  | 7,599,597 | [5] | 8,000,953 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Lynnhaven Apartments [Member] | NC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [8] |  |  | 3,450,000 |
Cumulative Unrealized Gain | [8] |  |  | 115,328 |
Estimated Fair Value | [8] |  |  | 3,565,328 |
Mortgage Revenue Bonds Held In Trust [Member] | Silver Moon [Member] | Series A [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,557,312 | [3] | 7,629,704 | [4]
Cumulative Unrealized Gain |  | 863,401 | [3] | 1,868,323 | [4]
Estimated Fair Value |  | 8,420,713 | [3] | 9,498,027 | [4]
Mortgage Revenue Bonds Held In Trust [Member] | Village at Avalon [Member] | Series A [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 15,942,560 | [12] | 16,069,382 | [13]
Cumulative Unrealized Gain |  | 1,727,010 | [12] | 4,124,498 | [13]
Estimated Fair Value |  | 17,669,570 | [12] | 20,193,880 | [13]
Mortgage Revenue Bonds Held In Trust [Member] | Ohio Properties [Member] | Series A [Member] | OH [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [11] |  |  | 13,580,000 |
Estimated Fair Value | [11] |  |  | 13,580,000 |
Mortgage Revenue Bonds Held In Trust [Member] | Bridle Ridge [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [11] |  |  | 7,145,000 |
Estimated Fair Value | [11] |  |  | 7,145,000 |
Mortgage Revenue Bonds Held In Trust [Member] | Columbia Gardens [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 12,542,207 | [1] | 12,725,440 | [2]
Cumulative Unrealized Gain |  | 968,469 | [1] | 2,003,599 | [2]
Estimated Fair Value |  | 13,510,676 | [1] | 14,729,039 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Companion at Thornhill Apartments [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,786,181 | [1] | 10,924,609 | [2]
Cumulative Unrealized Gain |  | 709,979 | [1] | 1,793,226 | [2]
Estimated Fair Value |  | 11,496,160 | [1] | 12,717,835 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Cross Creek [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [11] |  |  | 6,120,285 |
Cumulative Unrealized Gain | [11] |  |  | 1,845,064 |
Estimated Fair Value | [11] |  |  | 7,965,349 |
Mortgage Revenue Bonds Held In Trust [Member] | The Palms at Premier Park [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,137,042 | [5] | 18,385,572 | [6]
Cumulative Unrealized Gain |  | 808,555 | [5] | 2,181,632 | [6]
Estimated Fair Value |  | 18,945,597 | [5] | 20,567,204 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Sondrio [Member] | Series 2022A [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [7] | 38,100,000 |  |  |
Estimated Fair Value | [7] | 38,100,000 |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Vietti [Member] | Series 2022A [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [7] | 26,985,000 |  |  |
Estimated Fair Value | [7] | 26,985,000 |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Village at River's Edge [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,649,659 | [1] | 9,728,355 | [2]
Cumulative Unrealized Gain |  | 590,962 | [1] | 2,370,569 | [2]
Estimated Fair Value |  | 10,240,621 | [1] | 12,098,924 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Willow Run [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 12,368,964 | [1] | 12,549,146 | [2]
Cumulative Unrealized Gain |  | 953,988 | [1] | 1,974,479 | [2]
Estimated Fair Value |  | 13,322,952 | [1] | 14,523,625 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Arbors at Hickory Ridge [Member] | TN [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,591,726 | [5] | 10,755,889 | [6]
Cumulative Unrealized Gain |  | 2,005,029 | [5] | 3,598,292 | [6]
Estimated Fair Value |  | 12,596,755 | [5] | 14,354,181 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Copperfield [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 13,532,636 | [7] | 13,678,286 | [8]
Cumulative Unrealized Gain |  | 919,463 | [7] | 2,549,711 | [8]
Estimated Fair Value |  | 14,452,099 | [7] | 16,227,997 | [8]
Mortgage Revenue Bonds Held In Trust [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 |  | 8,896,378 | [5] | 9,022,172 | [6]
Cumulative Unrealized Gain |  | 975,504 | [5] | 1,926,825 | [6]
Estimated Fair Value |  | 9,871,882 | [5] | 10,948,997 | [6]
Mortgage Revenue Bonds Held In Trust [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 |  | 7,196,674 | [5] | 7,295,334 | [6]
Cumulative Unrealized Gain |  | 717,701 | [5] | 1,578,333 | [6]
Estimated Fair Value |  | 7,914,375 | [5] | 8,873,667 | [6]
Mortgage Revenue Bonds Held In Trust [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 |  | 12,429,842 | [3] | 12,579,783 | [4]
Cumulative Unrealized Gain |  | 950,930 | [3] | 2,353,247 | [4]
Estimated Fair Value |  | 13,380,772 | [3] | 14,933,030 | [4]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Wilcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 5,128,595 | [7] | 5,183,794 | [8]
Cumulative Unrealized Gain |  | 170,370 | [7] | 772,242 | [8]
Estimated Fair Value |  | 5,298,965 | [7] | 5,956,036 | [8]
Mortgage Revenue Bonds Held In Trust [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 |  | 38,941,304 | [7] | 39,360,426 | [8]
Cumulative Unrealized Gain |  | 2,645,832 | [7] | 7,200,790 | [8]
Estimated Fair Value |  | 41,587,136 | [7] | 46,561,216 | [8]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar in 09 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,214,048 | [5] | 6,299,237 | [6]
Cumulative Unrealized Gain |  | 619,707 | [5] | 1,288,060 | [6]
Estimated Fair Value |  | 6,833,755 | [5] | 7,587,297 | [6]
Mortgage Revenue Bonds Held In Trust [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 |  | 15,155,942 | [5] | 15,370,243 | [6]
Cumulative Unrealized Gain |  | 1,290,551 | [5] | 3,165,575 | [6]
Estimated Fair Value |  | 16,446,493 | [5] | 18,535,818 | [6]
Mortgage Revenue Bonds Held In Trust [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 |  | 4,927,003 | [5] | 4,994,549 | [6]
Cumulative Unrealized Gain |  | 523,079 | [5] | 1,100,478 | [6]
Estimated Fair Value |  | 5,450,082 | [5] | 6,095,027 | [6]
Mortgage Revenue Bonds Held In Trust [Member] | Bruton Apartments [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 17,381,296 | [1] | 17,532,185 | [2]
Cumulative Unrealized Gain |  | 281,271 | [1] | 4,452,765 | [2]
Estimated Fair Value |  | 17,662,567 | [1] | 21,984,950 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Gulfgate [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,404,942 | [1] | 18,606,719 | [2]
Cumulative Unrealized Gain |  | 1,842,303 | [1] | 4,211,979 | [2]
Estimated Fair Value |  | 20,247,245 | [1] | 22,818,698 | [2]
Mortgage Revenue Bonds Held In Trust [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 |  | 12,893,533 | [1] | 13,034,887 | [2]
Cumulative Unrealized Gain |  | 1,249,523 | [1] | 3,055,517 | [2]
Estimated Fair Value |  | 14,143,056 | [1] | 16,090,404 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Williamcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 19,973,464 | [1] | 20,192,436 | [2]
Cumulative Unrealized Gain |  | 1,935,645 | [1] | 4,651,973 | [2]
Estimated Fair Value |  | 21,909,109 | [1] | 24,844,409 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Crossing at 1415 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,170,756 | [1] | 7,253,698 | [2]
Cumulative Unrealized Gain |  | 605,369 | [1] | 1,549,224 | [2]
Estimated Fair Value |  | 7,776,125 | [1] | 8,802,922 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Decatur-Angle [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 21,866,672 | [1] | 22,074,594 | [2]
Cumulative Unrealized Gain |  | 77,837 | [1] | 4,731,759 | [2]
Estimated Fair Value |  | 21,944,509 | [1] | 26,806,353 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Esperanza at Palo Alto [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,916,082 | [1] | 19,071,622 | [2]
Cumulative Unrealized Gain |  | 2,209,462 | [1] | 5,317,911 | [2]
Estimated Fair Value |  | 21,125,544 | [1] | 24,389,533 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Heights at 515 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,564,951 | [1] | 6,640,885 | [2]
Cumulative Unrealized Gain |  | 573,569 | [1] | 1,418,341 | [2]
Estimated Fair Value |  | 7,138,520 | [1] | 8,059,226 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Heritage Square [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,325,196 | [3] | 10,455,924 | [4]
Cumulative Unrealized Gain |  | 671,790 | [3] | 1,823,426 | [4]
Estimated Fair Value |  | 10,996,986 | [3] | 12,279,350 | [4]
Mortgage Revenue Bonds Held In Trust [Member] | Oaks at Georgetown [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,911,472 | [1] | 12,026,225 | [2]
Cumulative Unrealized Gain |  | 746,300 | [1] | 2,181,690 | [2]
Estimated Fair Value |  | 12,657,772 | [1] | 14,207,915 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Runnymede [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,535,000 | [10] | 9,675,000 | [11]
Cumulative Unrealized Gain |  | 45,577 | [10] | 99,489 | [11]
Estimated Fair Value |  | 9,580,577 | [10] | 9,774,489 | [11]
Mortgage Revenue Bonds Held In Trust [Member] | Southpark [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,257,062 | [10] | 11,365,100 | [11]
Cumulative Unrealized Gain |  | 1,352,726 | [10] | 1,542,509 | [11]
Estimated Fair Value |  | 12,609,788 | [10] | 12,907,609 | [11]
Mortgage Revenue Bonds Held In Trust [Member] | 15 West Apartments [Member] | WA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,454,318 | [1] | 9,531,842 | [2]
Cumulative Unrealized Gain |  | 1,534,060 | [1] | 2,799,259 | [2]
Estimated Fair Value |  | 10,988,378 | [1] | 12,331,101 | [2]
Mortgage Revenue Bonds Held In Trust [Member] | Rosewood Townhomes [Member] | Series A [Member] | Goose Creek, SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [8] |  |  | 24,000,000 |
Estimated Fair Value | [8] |  |  | 24,000,000 |
Mortgage Revenue Bonds [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 36,888,068 |  | 41,395,781 |
Cumulative Unrealized Gain |  | 504,076 |  | 1,179,215 |
Cumulative Unrealized Loss |  | (1,193,085) |  |  |
Estimated Fair Value |  | 36,199,059 |  | 42,574,996 |
Mortgage Revenue Bonds [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 |
Mortgage Revenue Bonds [Member] | Live 929 Apartments [Member] | 2014 Series B [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  |  |  | 17,344,000 |
Estimated Fair Value |  |  |  | 17,344,000 |
Mortgage Revenue Bonds [Member] | Greens Property [Member] | Series B [Member] | NC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 915,039 |  | 920,637 |
Cumulative Unrealized Gain |  | 122 |  | 46,672 |
Estimated Fair Value |  | 915,161 |  | 967,309 |
Mortgage Revenue Bonds [Member] | Ohio Properties [Member] | Series B [Member] | OH [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  |  |  | 3,465,270 |
Estimated Fair Value |  |  |  | 3,465,270 |
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 |  | 724,747 |  | 730,612 |
Cumulative Unrealized Gain |  | 53,132 |  | 122,646 |
Estimated Fair Value |  | 777,879 |  | 853,258 |
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 |  | 530,829 |  | 534,953 |
Cumulative Unrealized Gain |  | 33,406 |  | 86,437 |
Estimated Fair Value |  | 564,235 |  | 621,390 |
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 |  | 123,176 |  | 123,598 |
Cumulative Unrealized Gain |  | 22,510 |  | 37,590 |
Estimated Fair Value |  | 145,686 |  | 161,188 |
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 |  | 437,886 |  | 441,288 |
Cumulative Unrealized Gain |  | 27,557 |  | 71,303 |
Estimated Fair Value |  | 465,443 |  | 512,591 |
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 |  | 430,647 |  | 434,132 |
Cumulative Unrealized Gain |  | 26,816 |  | 69,950 |
Estimated Fair Value |  | 457,463 |  | 504,082 |
Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | MI [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,833,437 | [14] | 100,000 |
Cumulative Unrealized Loss | [14] | (1,193,085) |  |  |
Estimated Fair Value |  | 3,640,352 | [14] | 100,000 |
Mortgage Revenue Bonds [Member] | Solano Vista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,631,168 |  | 2,649,291 |
Cumulative Unrealized Gain |  | 297,861 |  | 744,617 |
Estimated Fair Value |  | 2,929,029 |  | 3,393,908 |
Mortgage Revenue Bonds [Member] | C C B A Senior Garden Apartments [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,792,700 |  |  |
Cumulative Unrealized Gain | [9] | 42,672 |  |  |
Estimated Fair Value |  | 3,835,372 |  |  |
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 |  | 14,118,500 |  |  |
Estimated Fair Value |  | 14,118,500 |  |  |
Mortgage Revenue Bonds [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 |  |  |
Estimated Fair Value |  | 4,000,000 |  |  |
Mortgage Revenue Bonds [Member] | Residency at Empire - Series BB-3 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 55,000 |  |  |
Estimated Fair Value |  | 55,000 |  |  |
Mortgage Revenue Bonds [Member] | Provision Center 2014-1 [Member] | TN [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,294,939 |  | 4,300,000 |
Estimated Fair Value |  | $ 4,294,939 |  | $ 4,300,000 |
[1] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[2] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[3] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[4] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[5] | MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[6] | MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[7] | MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 15
[8] | MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 15
[9] | As of the date presented, the MRB had been in a cumulative unrealized loss position for less than 12 consecutive months and is not considered a credit loss. The Partnership determined the unrealized loss is a result of increasing market interest rates and is not considered other-than-temporary.
[10] | MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[11] | MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[12] | MRB held by Morgan Stanley in a debt financing transaction, Note 15
[13] | MRB held by Morgan Stanley in a debt financing transaction, Note 15
[14] | The Partnership has a remaining MRB funding commitment of $39.3 million as of December 31, 2022. 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 $39.3 million funding commitment outstanding as of December 31, 2022 (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 other-than-temporary.

X
- Definition Cost of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 + Details
Name: | us-gaap_InvestmentOwnedAtCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5D -Subparagraph (SX 210.12-13D(Column C)) -URI https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)) -URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the excess of the cost (face amount, notional amount) of an investment (security, contract) over its fair value which deficiency has not been recognized in earnings of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=122147990&loc=SL6090603-123010 + Details
Name: | us-gaap_InvestmentOwnedUnrecognizedUnrealizedAppreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the excess of the cost (face amount, notional amount) of an investment (security, contract) over its fair value which deficiency has not been recognized in earnings of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=122147990&loc=SL6090603-123010 + Details
Name: | us-gaap_InvestmentOwnedUnrecognizedUnrealizedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ghi_MortgageRevenueBondsHeldInTrustMember
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_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
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_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_StatementGeographicalAxis=stpr_NC
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_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_ResidencyAtTheMayerMember
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_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_BrookstoneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_IL
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_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_TwoThousandFourteenFirstMortgageMember
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_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_ThirdMortgageMember
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_GatewayVillageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ghi_BridleRidgeMember
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_ColumbiaGardensMember
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_CrossCreekMember
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_ArborsAtHickoryRidgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TN
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_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_RunnymedeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ghi_MortgageRevenueBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ghi_TwoThousandFourteenSecondMortgageMember
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_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_SolanoVistaMember
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_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_ProvisionCenter20141Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |