ACCOUNTING STANDARDS UPDATE - opening and closing balances for inventories (Details) - USD ($)	Mar. 31, 2019	Apr. 01, 2018	Mar. 31, 2018
Inventories	$ 1,240,315	$ 976,693	$ 2,088,485
Contract assets	4,390,832	2,056,414	347,896
Contract liabilities	$ 740,947	$ 890,802	$ 180,706

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant