Fair Value of Financial Instruments - Schedule of Financial Assets and Liabilities Measured at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Liabilities:
Warrant liability	$ 17	$ 9
Money market funds
Assets:
Cash equivalents - money market funds	0	1,681
Fair Value, Recurring
Assets:
Total assets		1,681
Liabilities:
Derivative liability	59	56
Warrant liability	17	9
Total liabilities	76	65
Fair Value, Recurring | Money market funds
Assets:
Cash equivalents - money market funds		1,681
Fair Value, Recurring | Level 1
Assets:
Total assets		1,681
Liabilities:
Derivative liability	0	0
Warrant liability	0	0
Total liabilities	0	0
Fair Value, Recurring | Level 1 | Money market funds
Assets:
Cash equivalents - money market funds		1,681
Fair Value, Recurring | Level 2
Assets:
Total assets		0
Liabilities:
Derivative liability	0	0
Warrant liability	17	9
Total liabilities	17	9
Fair Value, Recurring | Level 2 | Money market funds
Assets:
Cash equivalents - money market funds		0
Fair Value, Recurring | Level 3
Assets:
Total assets		0
Liabilities:
Derivative liability	59	56
Warrant liability	0	0
Total liabilities	$ 59	56
Fair Value, Recurring | Level 3 | Money market funds
Assets:
Cash equivalents - money market funds		$ 0