{"cik":715787,"taxonomy":"us-gaap","tag":"LongTermDebtNoncurrent","label":"Long-term Debt, Excluding Current Maturities","description":"Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"INTERFACE INC","units":{"USD":[{"end":"2012-12-30","val":0,"accn":"0001437749-14-002842","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-26","frame":"CY2012Q4I"},{"end":"2013-12-29","val":26326000,"accn":"0001437749-14-002842","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-26"},{"end":"2013-12-29","val":26326000,"accn":"0001437749-14-008293","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08"},{"end":"2013-12-29","val":26326000,"accn":"0001437749-14-014540","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-07"},{"end":"2013-12-29","val":26326000,"accn":"0001437749-14-019753","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"end":"2013-12-29","val":26326000,"accn":"0001437749-15-003389","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2013Q4I"},{"end":"2014-03-30","val":30907000,"accn":"0001437749-14-008293","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1I"},{"end":"2014-06-29","val":31513000,"accn":"0001437749-14-014540","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-07","frame":"CY2014Q2I"},{"end":"2014-09-28","val":27988000,"accn":"0001437749-14-019753","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06","frame":"CY2014Q3I"},{"end":"2014-12-28","val":263338000,"accn":"0001437749-15-003389","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25"},{"end":"2014-12-28","val":263338000,"accn":"0001437749-15-010111","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-14"},{"end":"2014-12-28","val":263338000,"accn":"0001437749-15-015385","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10"},{"end":"2014-12-28","val":263338000,"accn":"0001437749-15-020502","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-12"},{"end":"2014-12-28","val":263338000,"accn":"0001437749-16-026549","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-02","frame":"CY2014Q4I"},{"end":"2015-04-05","val":254000000,"accn":"0001437749-15-010111","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-14","frame":"CY2015Q1I"},{"end":"2015-07-05","val":251615000,"accn":"0001437749-15-015385","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2015Q2I"},{"end":"2015-10-04","val":222545000,"accn":"0001437749-15-020502","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-12","frame":"CY2015Q3I"},{"end":"2016-01-03","val":202281000,"accn":"0001437749-16-026549","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-02"},{"end":"2016-01-03","val":202281000,"accn":"0001437749-16-031638","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-12"},{"end":"2016-01-03","val":202281000,"accn":"0001437749-16-037105","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-11"},{"end":"2016-01-03","val":202281000,"accn":"0001437749-16-041710","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-10"},{"end":"2016-01-03","val":202281000,"accn":"0001437749-17-003636","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-02","frame":"CY2015Q4I"},{"end":"2016-04-03","val":220112000,"accn":"0001437749-16-031638","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-12","frame":"CY2016Q1I"},{"end":"2016-07-03","val":210577000,"accn":"0001437749-16-037105","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-11","frame":"CY2016Q2I"},{"end":"2016-10-02","val":202612000,"accn":"0001437749-16-041710","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-10","frame":"CY2016Q3I"},{"end":"2017-01-01","val":255347000,"accn":"0001437749-17-003636","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-02"},{"end":"2017-01-01","val":255347000,"accn":"0001437749-17-008711","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-11"},{"end":"2017-01-01","val":255347000,"accn":"0001437749-17-014395","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-10"},{"end":"2017-01-01","val":255347000,"accn":"0001437749-17-018919","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"end":"2017-01-01","val":255347000,"accn":"0001437749-18-003647","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01","frame":"CY2016Q4I"},{"end":"2017-04-02","val":208035000,"accn":"0001437749-17-008711","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-11","frame":"CY2017Q1I"},{"end":"2017-07-02","val":215425000,"accn":"0001437749-17-014395","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-10","frame":"CY2017Q2I"},{"end":"2017-10-01","val":219506000,"accn":"0001437749-17-018919","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2017Q3I"},{"end":"2017-12-31","val":214928000,"accn":"0001437749-18-003647","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01"},{"end":"2017-12-31","val":214928000,"accn":"0001437749-18-009608","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-11"},{"end":"2017-12-31","val":214928000,"accn":"0001437749-18-015200","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-10"},{"end":"2017-12-31","val":214928000,"accn":"0001437749-18-020236","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-09"},{"end":"2017-12-31","val":214928000,"accn":"0001437749-19-003613","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2017Q4I"},{"end":"2018-04-01","val":228881000,"accn":"0001437749-18-009608","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-11","frame":"CY2018Q1I"},{"end":"2018-07-01","val":228531000,"accn":"0001437749-18-015200","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-10","frame":"CY2018Q2I"},{"end":"2018-09-30","val":617565000,"accn":"0001437749-18-020236","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-09","frame":"CY2018Q3I"},{"end":"2018-12-30","val":587266000,"accn":"0001437749-19-003613","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"end":"2018-12-30","val":587266000,"accn":"0001437749-19-009399","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10"},{"end":"2018-12-30","val":587266000,"accn":"0001437749-19-016020","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-08"},{"end":"2018-12-30","val":587266000,"accn":"0000715787-19-000035","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07"},{"end":"2018-12-30","val":587266000,"accn":"0000715787-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-26","frame":"CY2018Q4I"},{"end":"2019-03-31","val":610895000,"accn":"0001437749-19-009399","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10","frame":"CY2019Q1I"},{"end":"2019-06-30","val":641106000,"accn":"0001437749-19-016020","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-08","frame":"CY2019Q2I"},{"end":"2019-09-29","val":594581000,"accn":"0000715787-19-000035","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07","frame":"CY2019Q3I"},{"end":"2019-12-29","val":565178000,"accn":"0000715787-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-26"},{"end":"2019-12-29","val":565178000,"accn":"0000715787-20-000027","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-12"},{"end":"2019-12-29","val":565178000,"accn":"0000715787-20-000050","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11"},{"end":"2019-12-29","val":565178000,"accn":"0000715787-20-000062","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"end":"2019-12-29","val":565178000,"accn":"0000715787-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-03","frame":"CY2019Q4I"},{"end":"2020-04-05","val":596423000,"accn":"0000715787-20-000027","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-12","frame":"CY2020Q1I"},{"end":"2020-07-05","val":589130000,"accn":"0000715787-20-000050","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-11","frame":"CY2020Q2I"},{"end":"2020-10-04","val":548827000,"accn":"0000715787-20-000062","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09","frame":"CY2020Q3I"},{"end":"2021-01-03","val":561251000,"accn":"0000715787-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-03"},{"end":"2021-01-03","val":561251000,"accn":"0000715787-21-000017","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-11"},{"end":"2021-01-03","val":561251000,"accn":"0000715787-21-000032","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-10"},{"end":"2021-01-03","val":561251000,"accn":"0000715787-21-000045","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-09"},{"end":"2021-01-03","val":561251000,"accn":"0000715787-22-000005","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-02","frame":"CY2020Q4I"},{"end":"2021-04-04","val":547395000,"accn":"0000715787-21-000017","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-11","frame":"CY2021Q1I"},{"end":"2021-07-04","val":541395000,"accn":"0000715787-21-000032","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-10","frame":"CY2021Q2I"},{"end":"2021-10-03","val":509912000,"accn":"0000715787-21-000045","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-09","frame":"CY2021Q3I"},{"end":"2022-01-02","val":503056000,"accn":"0000715787-22-000005","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-02"},{"end":"2022-01-02","val":503056000,"accn":"0000715787-22-000019","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10"},{"end":"2022-01-02","val":503056000,"accn":"0000715787-22-000032","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-09"},{"end":"2022-01-02","val":503056000,"accn":"0000715787-22-000041","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-08"},{"end":"2022-01-02","val":503056000,"accn":"0000715787-23-000010","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-01","frame":"CY2021Q4I"},{"end":"2022-04-03","val":506803000,"accn":"0000715787-22-000019","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10","frame":"CY2022Q1I"},{"end":"2022-07-03","val":530716000,"accn":"0000715787-22-000032","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-09","frame":"CY2022Q2I"},{"end":"2022-10-02","val":507094000,"accn":"0000715787-22-000041","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-08","frame":"CY2022Q3I"},{"end":"2023-01-01","val":510003000,"accn":"0000715787-23-000010","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-01"},{"end":"2023-01-01","val":510003000,"accn":"0000715787-23-000024","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09"},{"end":"2023-01-01","val":510003000,"accn":"0000715787-23-000032","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08"},{"end":"2023-01-01","val":510003000,"accn":"0000715787-23-000036","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-07"},{"end":"2023-01-01","val":510003000,"accn":"0000715787-24-000005","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-28","frame":"CY2022Q4I"},{"end":"2023-04-02","val":490901000,"accn":"0000715787-23-000024","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09","frame":"CY2023Q1I"},{"end":"2023-07-02","val":465348000,"accn":"0000715787-23-000032","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08","frame":"CY2023Q2I"},{"end":"2023-10-01","val":435899000,"accn":"0000715787-23-000036","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-07","frame":"CY2023Q3I"},{"end":"2023-12-31","val":408641000,"accn":"0000715787-24-000005","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-28"},{"end":"2023-12-31","val":408641000,"accn":"0000715787-24-000019","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-07"},{"end":"2023-12-31","val":408641000,"accn":"0000715787-24-000027","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"end":"2023-12-31","val":408641000,"accn":"0000715787-24-000035","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"end":"2023-12-31","val":408641000,"accn":"0000715787-25-000006","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-26","frame":"CY2023Q4I"},{"end":"2024-03-31","val":383261000,"accn":"0000715787-24-000019","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-07","frame":"CY2024Q1I"},{"end":"2024-06-30","val":379027000,"accn":"0000715787-24-000027","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06","frame":"CY2024Q2I"},{"end":"2024-09-29","val":329347000,"accn":"0000715787-24-000035","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05","frame":"CY2024Q3I"},{"end":"2024-12-29","val":302275000,"accn":"0000715787-25-000006","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-26"},{"end":"2024-12-29","val":302275000,"accn":"0000715787-25-000015","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06"},{"end":"2024-12-29","val":302275000,"accn":"0000715787-25-000027","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05"},{"end":"2024-12-29","val":302275000,"accn":"0000715787-25-000031","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"end":"2024-12-29","val":302275000,"accn":"0000715787-26-000006","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-25","frame":"CY2024Q4I"},{"end":"2025-03-30","val":302390000,"accn":"0000715787-25-000015","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06","frame":"CY2025Q1I"},{"end":"2025-06-29","val":303943000,"accn":"0000715787-25-000027","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05","frame":"CY2025Q2I"},{"end":"2025-09-28","val":307280000,"accn":"0000715787-25-000031","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04","frame":"CY2025Q3I"},{"end":"2025-12-28","val":172801000,"accn":"0000715787-26-000006","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-25"},{"end":"2025-12-28","val":172801000,"accn":"0000715787-26-000012","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-12"},{"end":"2025-12-28","val":172801000,"accn":"0000715787-26-000024","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-11","frame":"CY2025Q4I"},{"end":"2026-04-05","val":187698000,"accn":"0000715787-26-000012","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-12","frame":"CY2026Q1I"},{"end":"2026-07-05","val":195566000,"accn":"0000715787-26-000024","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-11","frame":"CY2026Q2I"}]}}