EARNINGS (LOSS) PER SHARE - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income (loss) attributable to Jerash Holdings (US), Inc.'s Common Shareholders	$ 1,549	$ (885)
Denominator:
Denominator for basic earnings per share (weighted-average shares)	11,325,000	10,822,143
Dilutive securities - unexercised warrants and options	147,363	0
Denominator for diluted earnings per share (adjusted weighted-average shares)	11,472,363	10,822,143
Basic earnings (loss) per share	$ 0.14	$ (0.08)
Diluted earnings (loss) per share	$ 0.14	$ (0.08)