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NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Detail) - Schedule of Foreign Currency Exchange Rates | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2012
Period End Average Rate (P&L Rate) [Member] | INR per USD [Member] |  |  |
Conversion Rate | INR 52.88 per USD | INR 48.77 per USD | INR 47.72 per USD
Period End Average Rate (P&L Rate) [Member] | RMB per USD [Member] |  |  |
Conversion Rate | RMB 6.29 per USD |  | RMB 6.29 per USD
Period End Rate (Balance Sheet Rate) [Member] | INR per USD [Member] |  |  |
Conversion Rate | INR 54.86 per USD | INR 53.01 per USD | INR 50.89 per USD
Period End Rate (Balance Sheet Rate) [Member] | RMB per USD [Member] |  |  |
Conversion Rate | RMB 6.29 per USD |  | RMB 6.30 per USD

X
- Definition Description of foreign exchange rate used to translate amounts. + References No definition available. + Details
Name: | igc_ForeignExchangeRateDescription
Namespace Prefix: | igc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration