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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)
 1 Months Ended
Oct. 31, 2013
May 31, 2013
Payments of Stock Issuance Costs $ 434,641us-gaap_PaymentsOfStockIssuanceCosts  
Sale of Stock, Price Per Share $ 3.21us-gaap_SaleOfStockPricePerShare  
Series A One Redeemable Convertible Preferred Stock [Member]    
Sale of Stock, Price Per Share   $ 0.01us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= invt_SeriesOneRedeemableConvertiblePreferredStockMember
Series A Two Redeemable Convertible Preferred Stock [Member]    
Payments of Stock Issuance Costs   $ 501,475us-gaap_PaymentsOfStockIssuanceCosts
/ us-gaap_StatementClassOfStockAxis
= invt_SeriesTwoRedeemableConvertiblePreferredStockMember
Sale of Stock, Price Per Share   $ 1.6996us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= invt_SeriesTwoRedeemableConvertiblePreferredStockMember