Debt - Perceptive Term Loan and MidCap Term Loan (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Nov. 14, 2025	May 31, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Long-term Debt
Common stock, Par value (in dollars per share)			$ 0.001	$ 0.001
Number of warrants exercised			(700,000)
Loss on extinguishment of debt			$ (888)
Maximum
Long-term Debt
Prepayment premium	10.00%
Minimum
Long-term Debt
Prepayment premium	2.00%
MidCap term loan
Long-term Debt
Debt amount		$ 40,000		$ 40,000
Interest Rate (as a percent)		6.25%
Variable Interest Rate (as a percent)		1.00%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		tela:SecuredOvernightFinancingRateSofrOneMonthTermMember
Interest expenses			4,100	5,300	$ 5,200
Amortization of debt issuance costs			400	$ 600	$ 600
Loss on extinguishment of debt			(900)
Perceptive term loan
Long-term Debt
Debt amount			60,000
Variable Interest Rate (as a percent)	7.85%
Interest expenses			1,100
Amortization of debt issuance costs			$ 100
Maximum borrowing capacity	$ 70,000
Initial loan capacity	60,000
Additional loan capacity	$ 10,000
Maturity date	Nov. 14, 2030
Interest rate, floor (as a percent)	4.25%
Applicable margin increase	3.00%
Common stock, Par value (in dollars per share)	$ 0.001
Additional debt issuance cost	$ 1,400
Minimum liquidity	$ 5,000
Perceptive term loan | Initial loan warrants
Long-term Debt
Warrants to purchase shares of the company	2,000,000
Warrants exercise price	$ 1.11
Perceptive term loan | Perceptive additional warrants
Long-term Debt
Warrants to purchase shares of the company	333,333
Warrants exercise price	$ 1.11
Number of warrants exercised			0