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NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates | 3 Months Ended | 12 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Mar. 31, 2013
INR per USD [Member] | Period End Average Rate (P&L Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Average Rage (P&L Rate) | INR 55.82 per USD | INR 53.23 per USD | INR 54.36 per USD
INR per USD [Member] | Period End Rate (Balance Sheet Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Rate (Balance Sheet Rate) | INR 59.52 per USD | INR 55.57 per USD | INR 54.52 per USD
RMB per USD [Member] | Period End Average Rate (P&L Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Average Rage (P&L Rate) | RMB 6.16 per USD | RMB 6.31 per USD | RMB 6.28 per USD
RMB per USD [Member] | Period End Rate (Balance Sheet Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Rate (Balance Sheet Rate) | RMB 6.14 per USD | RMB 6.31per USD | RMB 6.21 per USD
HKD per USD [Member] | Period End Average Rate (P&L Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Average Rage (P&L Rate) | HKD 7.76 per USD |  | HKD 7.77 per USD
HKD per USD [Member] | Period End Rate (Balance Sheet Rate) [Member] |  |  |
NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES (Details) - Schedule of Foreign Currency Exchange Rates [Line Items] |  |  |
Period End Rate (Balance Sheet Rate) | HKD 7.76 per USD |  | HKD 7.76 per USD

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

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

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