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Commitments and contingencies - Additional Information (Detail) (USD $)
 9 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Nov. 12, 2008
Oct. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
May 31, 2011
Mar. 31, 2011
Apr. 30, 2010
Mar. 31, 2010
Apr. 30, 2008
Jan. 02, 2013
Jul. 23, 2013
Jun. 30, 2014
Jan. 31, 2015
Feb. 26, 2014
Loss Contingencies [Line Items]                                  
Operating Leases, Rent Expense   $ 309,891us-gaap_LeaseAndRentalExpense $ 331,916us-gaap_LeaseAndRentalExpense                            
Property Under Commercial Lease And Sublease Details   On February 7, 2014, the Company entered into the Second Amendment to Commercial Lease which, among other things, extends the term of the lease from March 31, 2014 to March 31, 2017 and reduced the 19,000 square feet, the amount of space under the master lease, by approximately 6,011 square feet, to approximately 13,000 square feet, which is the amount of space the Company currently occupies. In May 2010, the Company completed a sublease of the 6,011 square feet of underutilized office and laboratory space.                              
Executive bonus to base salary percentage   15.00%iliu_ExecutiveBonusToBaseSalaryPercentage                         30.00%iliu_ExecutiveBonusToBaseSalaryPercentage    
Granted, Weighted Avg.Exercise Price   $ 0.35us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice $ 0.38us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice                            
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Number   1,645,161us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 588,750us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber                            
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price   $ 0.43us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 0.89us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice                            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage                                
Employee-related Liabilities, Current                                 146,000us-gaap_EmployeeRelatedLiabilitiesCurrent
Operating Leases Base rent In Year Two   2.06%iliu_OperatingLeasesBaseRentInYearTwo                              
Operating Leases Base Rent In Year Three   2.06%iliu_OperatingLeasesBaseRentInYearThree                              
Travel and Entertainment Expense   80,000us-gaap_TravelAndEntertainmentExpense                              
Dr. Kornman [Member]                                  
Loss Contingencies [Line Items]                                  
Officers' Compensation   360,000us-gaap_OfficersCompensation
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Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross       75,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_PresidentAndChiefScientificOfficerMember		 2,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_PresidentAndChiefScientificOfficerMember		 300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_PresidentAndChiefScientificOfficerMember		   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_PresidentAndChiefScientificOfficerMember		   30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_PresidentAndChiefScientificOfficerMember		              
Granted, Weighted Avg.Exercise Price       $ 0.48us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= iliu_PresidentAndChiefScientificOfficerMember		 $ 0.3799us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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= iliu_PresidentAndChiefScientificOfficerMember		                        
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Number       30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
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= iliu_PresidentAndChiefScientificOfficerMember		                          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares             15,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
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= iliu_PresidentAndChiefScientificOfficerMember		   15,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
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Annual Reimbursement For Payment Of Life Insurance Premiums   3,296iliu_AnnualReimbursementForPaymentOfLifeInsurancePremiums
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Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price           $ 0.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= iliu_PresidentAndChiefScientificOfficerMember		   $ 0.46us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
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= iliu_PresidentAndChiefScientificOfficerMember		   $ 0.745us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= iliu_PresidentAndChiefScientificOfficerMember		              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage               25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
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= iliu_PresidentAndChiefScientificOfficerMember		   20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
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Dr. Kornman [Member] | Restricted Stock [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                     12,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
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= us-gaap_RestrictedStockMember
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Dr. Kornman [Member] | First Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ iliu_AnniversariesAxis
= iliu_FirstAnniversariesMember
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= iliu_PresidentAndChiefScientificOfficerMember		                      
Dr. Kornman [Member] | Second Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           33.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ iliu_AnniversariesAxis
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Dr. Kornman [Member] | Third Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           42.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ iliu_AnniversariesAxis
= iliu_ThirdAnniversariesMember
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Chief Financial Officer [Member]                                  
Loss Contingencies [Line Items]                                  
Officers' Compensation                       217,000us-gaap_OfficersCompensation
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= us-gaap_ChiefFinancialOfficerMember		          
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross         750,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= us-gaap_ChiefFinancialOfficerMember		 200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= us-gaap_ChiefFinancialOfficerMember		     100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= us-gaap_ChiefFinancialOfficerMember		 60,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= us-gaap_ChiefFinancialOfficerMember		   40,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares                       8,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
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Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price         $ 0.3799us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
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= us-gaap_ChiefFinancialOfficerMember		 $ 0.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
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= us-gaap_ChiefFinancialOfficerMember		     0.36us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
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= us-gaap_ChiefFinancialOfficerMember		 $ 0.745us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefFinancialOfficerMember		   $ 1.49us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
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= us-gaap_ChiefFinancialOfficerMember		          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                 25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
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= us-gaap_ChiefFinancialOfficerMember		 20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
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= us-gaap_ChiefFinancialOfficerMember		              
Signing bonus Paid                       15,000iliu_SigningBonusPaid
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Chief Financial Officer [Member] | First Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ iliu_AnniversariesAxis
= iliu_FirstAnniversariesMember
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Chief Financial Officer [Member] | Second Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           33.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
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= iliu_SecondAnniversariesMember
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Chief Financial Officer [Member] | Third Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           42.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ iliu_AnniversariesAxis
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Chief Marketing Officer [Member]                                  
Loss Contingencies [Line Items]                                  
Officers' Compensation   265,000us-gaap_OfficersCompensation
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= iliu_ChiefMarketingOfficerMember		 265,000us-gaap_OfficersCompensation
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= iliu_ChiefMarketingOfficerMember		                            
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross         675,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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= iliu_ChiefMarketingOfficerMember		               200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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Granted, Weighted Avg.Exercise Price         $ 0.3799us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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= iliu_ChiefMarketingOfficerMember		               $ 0.29us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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Maximum Percentage Of Bonus On Annual Salary   30.00%iliu_MaximumPercentageOfBonusOnAnnualSalary
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Maximum Reimbursement Expenses     $ 34,000iliu_MaximumReimbursementExpenses
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= iliu_ChiefMarketingOfficerMember		                     $ 60,000iliu_MaximumReimbursementExpenses
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= iliu_ChiefMarketingOfficerMember		 $ 16,000iliu_MaximumReimbursementExpenses
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= iliu_ChiefMarketingOfficerMember		    
Chief Marketing Officer [Member] | First Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares                         50,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ iliu_AnniversariesAxis
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Chief Marketing Officer [Member] | Second Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares                         66,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
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Chief Marketing Officer [Member] | Third Anniversaries [Member]                                  
Loss Contingencies [Line Items]                                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares                         84,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
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Subsequent Event [Member] | Dr. Kornman [Member]                                  
Loss Contingencies [Line Items]                                  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                               2,030,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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Granted, Weighted Avg.Exercise Price                               $ 0.26us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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Subsequent Event [Member] | Chief Marketing Officer [Member]                                  
Loss Contingencies [Line Items]                                  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                               660,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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Granted, Weighted Avg.Exercise Price                               $ 0.26us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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