Income Taxes (Details 3) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Deferred tax assets/(liability):
Employee benefits	$ 2,457	$ 1,890
Property and equipment	15	206
Goodwill	517	573
Allowance for impairment of accounts receivables	473	443
Carry forwarded income tax losses	2,969	4,687
Tax credit for R&D expenses	1,546	1,295
Derivative financial instruments	(120)	(28)
Foreign tax liability - FTC carryovers (Mexico)	1,200
Others	(592)	(819)
Gross deferred tax assets	8,465	8,247
Less: Valuation allowance	(828)	(1,076)
Net deferred tax assets	7,637	7,171
Current portion of deferred tax assets
Non-current portion of deferred tax assets	$ 7,637	$ 7,171