v3.26.1
Nature of business and organization (Details)
Mar. 31, 2026
FGI Industries, Inc.  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Europe Investment Limited  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI International, Limited  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Austrlasia Pty Ltd  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
Covered Bridge Cabinetry Manufacturing Co., Ltd  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Industries India Private Limited  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Industries, Inc. | FGI Canada Ltd.  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Industries, Inc. | Isla Porter LLC  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 60.00%
FGI Europe Investment Limited | FGI Germany GmbH & Co. KG  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI Europe Investment Limited | FGI United Kingdom Ltd  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%
FGI International, Limited | FGI China, Ltd  
Noncontrolling Interest [Line Items]  
Ownership percentage (as a percent) 100.00%