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COMMON STOCK, PREFERRED STOCK AND WARRANTS WITH-DOWN ROUND PROTECTION (Offering) (Details) (USD $)
5 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2013
May 14, 2013
May 13, 2013
Mar. 13, 2013
Nov. 19, 2012
Temporary Equity [Line Items]                  
Proceeds from convertible preferred stock and warrants $ 7,300,000us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStock   $ 5,300,000us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStock            
Stock price at which stock dividend is declared $ 5.80igap_StockPriceAtWhichStockDividendIsDeclared $ 5.80igap_StockPriceAtWhichStockDividendIsDeclared              
Stock dividend                    
Non-cash compensation expense   630,936us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims              
Common Stock [Member]                  
Temporary Equity [Line Items]                  
Stock dividend   (1)us-gaap_DividendsStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
              
Stock issued, shares       165,057us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
         
Retained Earnings [Member]                  
Temporary Equity [Line Items]                  
Stock dividend      278,263us-gaap_DividendsStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
  278,263us-gaap_DividendsStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
       
Scenario, Plan [Member]                  
Temporary Equity [Line Items]                  
Shares convertible into           1,284,925igap_ConvertiblePreferredStockAggregateNumberOfSharesIssueduponConversion
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember
     
Number of shares covered by warrants           1,539,546us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember
     
Stock issued, shares           2,824,471us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember
     
2012 Offering [Member]                  
Temporary Equity [Line Items]                  
Shares sold                 165,057us-gaap_StockIssuedDuringPeriodSharesIssuedForCash
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
Common stock issued, price per share                 $ 7.00us-gaap_EquityIssuancePerShareAmount
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
Amount of issuance                 1,155,399us-gaap_StockIssuedDuringPeriodValueIssuedForCash
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
Number of shares offered                 785,714igap_NumberOfSharesOffered
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
Number of units sold             1,140.35igap_NumberOfUnitsSold
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
6,300igap_NumberOfUnitsSold
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
 
Proceeds from convertible preferred stock and warrants   5,400,000us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStock
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
             
Cancellation of shares, shares             162,907us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
   
Value of temporary equity reclassified             1,140,349us-gaap_TemporaryEquityOtherChanges
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
   
Total issuance costs       1,479,864igap_OfferingCostsIncurred
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
         
Non-cash compensation expense       562,805us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
         
2012 Offering [Member] | Common Stock [Member]                  
Temporary Equity [Line Items]                  
Stock dividend, shares   100,526us-gaap_StockDividendsShares
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
2012 Offering [Member] | Scenario, Plan [Member]                  
Temporary Equity [Line Items]                  
Stock issued, shares             1,295,535us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember
   
2014 Offering [Member]                  
Temporary Equity [Line Items]                  
Gross proceeds from issuance of Units 8,500,000igap_ProceedsFromUnitsSold
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandFourteenOfferingMember
               
Number of units sold 8,500igap_NumberOfUnitsSold
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandFourteenOfferingMember
               
Warrants term 5 years                
Proceeds from convertible preferred stock and warrants 7,300,000us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStock
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandFourteenOfferingMember
               
Total issuance costs   1,787,545igap_OfferingCostsIncurred
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandFourteenOfferingMember
             
Non-cash compensation expense   $ 630,936us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandFourteenOfferingMember
             
Series A warrants Issued under Securities Purchase Agreement [Member]                  
Temporary Equity [Line Items]                  
Number of shares covered by warrants 1,086,178us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecuritiesPurchaseAgreementMember
1,086,178us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecuritiesPurchaseAgreementMember
             
Warrant exercise price $ 6.96us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecuritiesPurchaseAgreementMember
$ 6.96us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecuritiesPurchaseAgreementMember
             
Warrants Issued under Second Closing of Securities Purchase Agreement [Member]                  
Temporary Equity [Line Items]                  
Number of shares covered by warrants 196,597us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecondClosingOfSecuritiesPurchaseAgreementMember
196,597us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_WarrantsIssuedUnderSecondClosingOfSecuritiesPurchaseAgreementMember
             
Series B-1 Warrant [Member]                  
Temporary Equity [Line Items]                  
Warrants term   5 years              
Warrant exercise price $ 5.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_SeriesB1WarrantMember
$ 5.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_SeriesB1WarrantMember
             
Series B-2 Warrant [Member]                  
Temporary Equity [Line Items]                  
Warrants term   5 years              
Warrant exercise price $ 10.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_SeriesB2WarrantMember
$ 10.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= igap_SeriesB2WarrantMember
             
Series A Preferred Stock [Member] | 2012 Offering [Member]                  
Temporary Equity [Line Items]                  
Preferred stock conversion price               5.80igap_ConvertiblePreferredStockConversionPrice
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember
 
Shares convertible into             196,597igap_ConvertiblePreferredStockAggregateNumberOfSharesIssueduponConversion
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember
1,086,178igap_ConvertiblePreferredStockAggregateNumberOfSharesIssueduponConversion
/ us-gaap_RegistrationPaymentArrangementByArrangementAxis
= igap_TwoThousandTwelveOfferingMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember