Document And Entity Information - shares	6 Months Ended
	Sep. 30, 2018	Nov. 12, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	Jerash Holdings (US), Inc.
Entity Central Index Key	0001696558
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Trading Symbol	JRSH
Entity Common Stock, Shares Outstanding		11,325,000
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Small Business	true