Nature of business and organization - Reorganization - Tabular Disclosure (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Schedule of Reorganization, Net Results [Line Items]
Revenue	$ 131,818,073	$ 117,241,604
Cost of revenue	(96,390,733)	(85,164,322)
Gross profit	35,427,340	32,077,282
Selling and distribution expenses	25,627,634	19,971,912
General and administrative expenses	10,199,914	8,424,083
Research and development expenses	1,699,383	1,376,844
Income from operations	(2,099,591)	2,304,443
Business Allocated from FGI Industries to Foremost Home, Inc.
Schedule of Reorganization, Net Results [Line Items]
Revenue	0	991,919
Cost of revenue	0	(768,065)
Gross profit	0	223,854
Selling and distribution expenses	0	45,979
General and administrative expenses	0	0
Research and development expenses	0	0
Income from operations	$ 0	$ 269,833