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Stock-Based Compensation Arrangements (Stock options and restricted stock outstanding and exercisable) (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 4,523,900us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding, Weighted Avg. Exercise Price $ 0.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Exercisable, Shares 1,645,161us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Exercisable, Weighted Avg. Exercise Price $ 0.43us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Stock Option Or Restricted Stock Outstanding [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 4,523,900us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
Outstanding, Weighted Avg. remaining contractual life 8 years 5 months 12 days
Outstanding, Weighted Avg. Exercise Price $ 0.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
Aggregate intrinsic value $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
Stock Option Or Restricted Stock Outstanding [Member] | $0.01-$1.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 4,474,900us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuanceOneMember
Outstanding, Weighted Avg. remaining contractual life 8 years 6 months 4 days
Outstanding, Weighted Avg. Exercise Price $ 0.38us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuanceOneMember
Stock Option Or Restricted Stock Outstanding [Member] | $1.01-$2.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 45,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesTwoMember
Outstanding, Weighted Avg. remaining contractual life 3 years 3 months
Outstanding, Weighted Avg. Exercise Price $ 1.40us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesTwoMember
Stock Option Or Restricted Stock Outstanding [Member] | $2.01-$3.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesThreeMember
Outstanding, Weighted Avg. Exercise Price $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesThreeMember
Stock Option Or Restricted Stock Outstanding [Member] | $3.01-$4.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFourMember
Outstanding, Weighted Avg. Exercise Price $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFourMember
Stock Option Or Restricted Stock Outstanding [Member] | $4.01-$5.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 4,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFiveMember
Outstanding, Weighted Avg. remaining contractual life 11 months 5 days
Outstanding, Weighted Avg. Exercise Price $ 4.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockOutstandingMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFiveMember
Stock Option Or Restricted Stock Exercisable [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercisable, Shares 1,645,161us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
Exercisable, Weighted Avg. Exercise Price $ 0.43us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
Aggregate intrinsic value $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
Stock Option Or Restricted Stock Exercisable [Member] | $0.01-$1.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Outstanding, Shares 1,596,161us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuanceOneMember
Exercisable, Weighted Avg. Exercise Price $ 0.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuanceOneMember
Stock Option Or Restricted Stock Exercisable [Member] | $1.01-$2.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercisable, Shares 45,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesTwoMember
Exercisable, Weighted Avg. Exercise Price $ 1.40us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesTwoMember
Stock Option Or Restricted Stock Exercisable [Member] | $2.01-$3.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercisable, Shares 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesThreeMember
Exercisable, Weighted Avg. Exercise Price $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesThreeMember
Stock Option Or Restricted Stock Exercisable [Member] | $3.01-$4.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercisable, Shares 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFourMember
Exercisable, Weighted Avg. Exercise Price $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFourMember
Stock Option Or Restricted Stock Exercisable [Member] | $4.01-$5.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercisable, Shares 4,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFiveMember
Exercisable, Weighted Avg. Exercise Price $ 4.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= iliu_StockOptionOrRestrictedStockExercisableMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= iliu_IssuancesFiveMember