Debt instrument amortization period.

No definition available.

Name:	trxc_DebtInstrumentAmortizationPeriod
Namespace Prefix:	trxc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Covenant Terms, Market Capitalization

+ References

No definition available.

+ Details

Name:	trxc_DebtInstrumentCovenantTermsMarketCapitalization
Namespace Prefix:	trxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt instrument interest only payment period.

+ References

No definition available.

+ Details

Name:	trxc_DebtInstrumentInterestOnlyPaymentPeriod
Namespace Prefix:	trxc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument redemption price amount.

+ References

No definition available.

+ Details

Name:	trxc_DebtInstrumentRedemptionPriceAmount
Namespace Prefix:	trxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt instrument repayment period after interest only period.

+ References

No definition available.

+ Details

Name:	trxc_DebtInstrumentRepaymentPeriodAfterInterestOnlyPeriod
Namespace Prefix:	trxc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility non milestone based minimum advances available.

+ References

No definition available.

+ Details

Name:	trxc_LineOfCreditFacilityNonMilestoneBasedMinimumAdvancesAvailable
Namespace Prefix:	trxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long term debt percentage bearing fixed interest paid in kind percentage.

+ References

No definition available.

+ Details

Name:	trxc_LongTermDebtPercentageBearingFixedInterestPaidInKindPercentage
Namespace Prefix:	trxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of maintained cash and investment property in accounts of aggregate cash of parent and subsidiaries.

+ References

No definition available.

+ Details

Name:	trxc_PercentageOfMaintainedCashAndInvestmentPropertyInAccountsOfAggregateCashOfParentAndSubsidiaries
Namespace Prefix:	trxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of outstanding principal balance of term loan required to be maintained.

+ References

No definition available.

+ Details

Name:	trxc_PercentageOfOutstandingPrincipalBalanceOfTermLoanRequiredToBeMaintained
Namespace Prefix:	trxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of prepayment fee.

+ References

No definition available.

+ Details

Name:	trxc_PercentageOfPrepaymentFee
Namespace Prefix:	trxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Warrant expiration period.

+ References

No definition available.

+ Details

Name:	trxc_WarrantExpirationPeriod
Namespace Prefix:	trxc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

+ Details

Name:	us-gaap_DebtInstrumentFeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

Name:	us-gaap_DeferredFinanceCostsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=trxc_NotesPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=trxc_HerculesLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=trxc_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=trxc_FixedRateAndPrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trxc_FirstYearAfterInitialFundingDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trxc_SecondYearAfterInitialFundingDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trxc_SecondYearAfterInitialFundingDateAndThereafterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trxc_TrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trxc_TrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trxc_TrancheFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=trxc_LoanAndSecurityAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=trxc_InnovatusLifeSciencesLendingFundILpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Notes Payable - Additional Information (Detail) - USD ($)			6 Months Ended		12 Months Ended
	May 23, 2018	May 10, 2017	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Apr. 30, 2019	Oct. 23, 2018	Apr. 28, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Minimum advances available under facility						$ 5,000,000.0
Debt covenant, market capitalization			$ 250,000,000
Loss on extinguishment of notes payable			$ 0	$ (1,400,000)
Issue of warrants to purchase shares of company's common stock (in shares)								24,900,000
Notes Payable
Debt Instrument [Line Items]
Debt issuance cost									$ 300,000
Hercules Loan Agreement
Debt Instrument [Line Items]
Debt discount liability, facility fee recorded as debt discount					$ 300,000
Debt instrument, redemption price amount					700,000
Hercules Loan Agreement \| Notes Payable \| Interest Expense
Debt Instrument [Line Items]
Loss on extinguishment of notes payable					(1,400,000)
Hercules Loan Agreement \| Term Loan
Debt Instrument [Line Items]
Term loans aggregate principal amount	$ 40,000,000.0
Debt instrument amortization period	18 months
Debt discount liability, facility fee recorded as debt discount	$ 400,000
Debt issuance costs recorded as debt discount	$ 1,100,000
Prepayment fee percentage	6.95%
Percentage outstanding principal balance of term loans required to be maintained	120.00%
Percentage of maintained cash and investment property in accounts of aggregate cash of parent and subsidiaries	80.00%
Amount of investment to any future equity offering	$ 2,000,000.0
Debt instrument repayment period after interest only period	18 months
Hercules Loan Agreement \| Term Loan \| Fixed Rate and Prime Rate
Debt Instrument [Line Items]
Term loans interest rate	5.00%
Hercules Loan Agreement \| Term Loan \| Maximum
Debt Instrument [Line Items]
Term loans fixed interest rate	10.05%
Hercules Loan Agreement \| Term Loan \| First Year After Initial Funding Date
Debt Instrument [Line Items]
Prepayment fee percentage	3.00%
Hercules Loan Agreement \| Term Loan \| Second Year After Initial Funding Date
Debt Instrument [Line Items]
Prepayment fee percentage	2.00%
Hercules Loan Agreement \| Term Loan \| Second Year After Initial Funding Date And Thereafter
Debt Instrument [Line Items]
Prepayment fee percentage	1.00%
Hercules Loan Agreement \| Term Loan \| First Tranche
Debt Instrument [Line Items]
Term loans aggregate principal amount	$ 20,000,000.0
Hercules Loan Agreement \| Term Loan \| Tranche Two
Debt Instrument [Line Items]
Term loans aggregate principal amount							$ 10,000,000.0
Hercules Loan Agreement \| Term Loan \| Tranche Four
Debt Instrument [Line Items]
Term loans aggregate principal amount						$ 20,000,000.0
Loan and Security Agreement \| Term Loan
Debt Instrument [Line Items]
Debt issuance costs recorded as debt discount		$ 1,200,000
Warrant expiration period		5 years
Loan and Security Agreement \| Term Loan \| Innovatus Life Sciences Lending Fund I, LP
Debt Instrument [Line Items]
Term loans aggregate principal amount		$ 17,000,000.0
Debt instrument amortization period		24 months
Term loans fixed interest rate		11.00%
Interest only payment period		24 months
Debt instrument repayment period after interest only period		2 years
Term loans fixed interest rate, paid in-kind percentage		2.50%
Loan and Security Agreement \| Term Loan \| First Tranche
Debt Instrument [Line Items]
Debt discount liability, facility fee recorded as debt discount		$ 200,000
Warrants, exercise price (in dollars per share)		$ 1.00
Unamortized debt discount					$ 0
Loan and Security Agreement \| Term Loan \| First Tranche \| Innovatus Life Sciences Lending Fund I, LP
Debt Instrument [Line Items]
Term loans aggregate principal amount		$ 14,000,000.0
Loan and Security Agreement \| Term Loan \| First Tranche \| Maximum
Debt Instrument [Line Items]
Issue of warrants to purchase shares of company's common stock (in shares)		1,244,746