Name:	igc_BusinessAcquisitionsProFormaOtherIncome
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- References

No definition available.

Name:	igc_NOTE23ACQUISITIONSANDDISPOSITIONSDetailsBusinessAcquisitionProFormaInformationLineItems
Namespace Prefix:	igc_
Data Type:	xbrli:stringItemType
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- References

No definition available.

Name:	igc_ProFormaEarningsPerShareAbstract0
Namespace Prefix:	igc_
Data Type:	xbrli:stringItemType
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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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Data Type:	num:perShareItemType
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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.