Derivative Financial Instruments (Details 1) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) recognized in AOCI (effective portion)	$ 1,005	$ 294	$ 167
Amount of gain/(Loss) reclassified from AOCI to Statement of Operations (Revenue)	(691)	(287)	(254)
Foreign exchange forward contracts [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) recognized in AOCI (effective portion)	1,005	294	167
Amount of gain/(Loss) reclassified from AOCI to Statement of Operations (Revenue)	$ (691)	$ (287)	$ (254)

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109978405&loc=d3e80720-113993

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

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