Debt (Tables)

6 Months Ended

Jun. 30, 2024

Debt

Schedule of long term debt and unamortized discount balances

	June 30, 2024		December 31, 2023
Outstanding principal amount	$	30,000	$	30,000
Add: accreted liability of final payment fee		916		686
Less: unamortized debt discount, long-term		—		(549)
Long-term debt, net of discount	$	30,916	$	30,137

Schedule of interest expense

	Three months ended June 30,				Six months ended June 30,
	2024		2023		2024			2023
Interest paid or accrued	$	887	$	862	$	1,774	$	1,678
Non-cash amortization of debt discount (including warrants)		—		53		38		103
Non-cash accrued back-end fee		107		119		230		234
	$	994	$	1,034	$	2,042	$	2,015

Schedule of future principal payments

	Three months ended June 30,				Six months ended June 30,
	2024		2023		2024			2023
Interest paid or accrued	$	887	$	862	$	1,774	$	1,678
Non-cash amortization of debt discount (including warrants)		—		53		38		103
Non-cash accrued back-end fee		107		119		230		234
	$	994	$	1,034	$	2,042	$	2,015