Nature of Business and Organization - Reorganization - Tabular Disclosure (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues	$ 38,544,062	$ 50,886,390	$ 129,928,316	$ 129,752,437
Cost of revenues	(30,503,452)	(42,757,388)	(105,942,167)	(105,117,467)
Gross profit	8,040,610	8,129,002	23,986,149	24,634,970
Selling and distribution expenses	(4,268,355)	(4,606,648)	(13,308,414)	(12,635,857)
General and administrative expenses	(1,865,325)	(1,517,753)	(5,801,294)	(4,500,692)
Research and development expenses	(238,638)	(197,032)	(788,054)	(486,156)
Income (loss) from operations	1,668,292	1,807,569	4,088,387	7,012,265
Business Allocated from FGI Industries to Foremost Home, Inc. [Member]
Revenues	10,081,416	8,953,237	30,743,753	42,534,691
Cost of revenues	(8,653,083)	(7,756,254)	(25,201,282)	(36,495,493)
Gross profit	1,428,333	1,196,983	5,542,471	6,039,198
Selling and distribution expenses	(1,187,198)	(1,293,023)	(3,509,028)	(3,620,940)
General and administrative expenses	(38,403)	(375,742)	(281,532)	(1,144,992)
Research and development expenses	(59,228)	(130,824)	(219,331)	(444,771)
Income (loss) from operations	143,504	(602,606)	1,532,580	828,495
Business Allocated from Foremost Worldwide Co., Ltd., to FGI International [Member]
Revenues	474,213	34,385,099	25,022,959	84,095,512
Cost of revenues	(398,768)	(31,565,859)	(22,853,884)	(74,694,183)
Gross profit	75,445	2,819,240	2,169,075	9,401,329
Selling and distribution expenses	(15,687)	(287,315)	(522,321)	(1,261,384)
General and administrative expenses	(137,987)	(308,657)	(424,861)	(913,683)
Research and development expenses	(11,893)	(18,978)	(27,080)	(73,782)
Income (loss) from operations	$ (90,122)	$ 2,204,290	$ 1,194,813	$ 7,152,480