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Agreement with Creighton University - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Commitment, Contingency And Related Party Transactions [Abstract]  
Percentage of royalty of product revenue 1.50%trxc_PercentageOfRoyaltyOfProductRevenue
Minimum investment under royalty agreement $ 2,500,000trxc_MinimumInvestmentUnderRoyaltyAgreement
Period for minimum investment under royalty agreement 36 months
Patent related under royalty agreement $ 150,000trxc_PatentRelatedUnderRoyaltyAgreement
Reimbursement percentage of research and development expenses 20.00%trxc_ReimbursementPercentageOfResearchAndDevelopmentExpenses