Represents the discount on purchase of common stock under the employee stock purchase plan.

No definition available.

Name:	tela_EmployeeStockPurchasePlanDiscountOnPurchaseOfCommonStock
Namespace Prefix:	tela_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of shares outstanding on the final day of the immediately preceding calendar year, which will be the conditional annual increase to the number of shares authorized or reserved for issuance.

+ References

No definition available.

+ Details

Name:	tela_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualConditionalIncreasePercentageOfSharesOutstanding
Namespace Prefix:	tela_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of conditional annual increase to shares authorized or reserved for issuance under the share based payment arrangement plan.

+ References

No definition available.

+ Details

Name:	tela_ShareBasedCompensationArrangementByShareBasedPaymentAwardConditionalAnnualIncreaseToNumberOfSharesAuthorizedOrReservedForIssuance
Namespace Prefix:	tela_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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

- Details

Name:	us-gaap_PlanNameAxis=tela_EmployeeStockPurchasePlan2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Employee Benefit Plans (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Employee Benefit Plans (Details) - USD ($) $ in Millions	Nov. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Maximum contribution of participant (as a percent)		100.00%
Percentage of employer's contribution		50.00%
Percentage of employer's contribution to employees		6.00%
Amount of employer's contribution		$ 0.2
Deferred Compensation Arrangement with Individual, Requisite Service Period		3 years
Employee Stock Purchase Plan 2019
Defined Contribution Plan Disclosure [Line Items]
Shares reserved for future issuance		212,977
Increase in number of shares	107,887
Increase in percentage of shares outstanding	1.00%
Discount on purchase of common stock	5.00%
Shares issued		2,797	0