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Stock-Based Compensation Arrangements (Stock-Based Compensation) (Detail) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Stock-based compensation expense $ 146,310us-gaap_ShareBasedCompensation $ 122,220us-gaap_ShareBasedCompensation
Stock option grants beginning of period [Member]    
Stock-based compensation expense 98,440us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_OptionOutstandingMember		 119,533us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_OptionOutstandingMember
Stock option grants [Member]    
Stock-based compensation expense 47,048us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_StockGrantsMember		 1,039us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_StockGrantsMember
Employee Stock Purchase Plan [Member]    
Stock-based compensation expense $ 822us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_EmployeeStockPurchasePlanMember		 $ 1,648us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= iliu_EmployeeStockPurchasePlanMember