Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($)
Summary of Significant Accounting Policies
Incremental costs of obtaining a contract	$ 0

Represents incremental costs incurred in obtaining a contract.

No definition available.

Name:	tela_IncrementalCostsOfObtainingContract
Namespace Prefix:	tela_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration