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NOTE 23 - CERTAIN AGED RECEIVABLES (Details) (Trade Accounts Receivable [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2012
Trade Accounts Receivable [Member]
NOTE 23 - CERTAIN AGED RECEIVABLES (Details) [Line Items]
Other Receivables, Gross, Current	$ 0.50	$ 0.50	$ 2.03
Increase (Decrease) in Other Receivables	$ (1.5)

X

- Details

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Namespace Prefix:	igc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The increase (decrease) during the reporting period in other amounts due to the reporting entity, which are not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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X

- Definition

Amounts of other receivables due within one year of the balance sheet date (or one operating cycle, if longer) from third parties or arising from transactions not separately disclosed.

+ References

No definition available.

+ Details

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Period Type:	instant