Cover
| Cover | Sep. 15, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 15, 2021 |
| Entity File Number | 001-38474 |
| Entity Registrant Name | Jerash Holdings (US), Inc |
| Entity Central Index Key | 0001696558 |
| Entity Tax Identification Number | 81-4701719 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 277 Fairfield Road |
| Entity Address, Address Line Two | Suite 338 |
| Entity Address, City or Town | Fairfield |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07004 |
| City Area Code | (214) |
| Local Phone Number | 906-0065 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.001 per share |
| Trading Symbol | JRSH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | true |