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NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Detail) - Schedule of Estimated Useful Lives	9 Months Ended
	Dec. 31, 2012
Building [Member]
Estimated Useful Life (years)	5-25 years
Plant and Machinery [Member]
Estimated Useful Life (years)	10-20 years
Computer Equipment [Member]
Estimated Useful Life (years)	3-5 years
Office Equipment [Member]
Estimated Useful Life (years)	3-5 years
Furniture and Fixtures [Member]
Estimated Useful Life (years)	5-10 years
Vehicles [Member]
Estimated Useful Life (years)	5-10 years

X

- Definition

The estimated useful life of assets held by the Company.

+ References

No definition available.

+ Details

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