Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net loss	$ (17,474)	$ (15,217)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	243	208
Stock-based compensation expense	2,638	886
Non-cash lease expense	793	846
Non-cash interest and other expense, net	104	96
Changes in operating assets and liabilities:
Prepaid expenses and other assets	709	370
Accounts payable	512	(240)
Accrued expenses and other liabilities	296	(931)
Interest payable	(7)	8
Operating lease liabilities	(510)	(721)
Cash used in operating activities	(12,696)	(14,695)
Investing activities:
Purchase of property and equipment	(417)	(163)
Cash used in investing activities	(417)	(163)
Financing activities:
Proceeds from the issuance of common stock in connection with at-the-market offering, net of issuance costs	4,810	1,232
Proceeds from the issuance of common stock under equity plan awards	197	0
Cash provided by financing activities	5,007	1,232
Net decrease in cash, cash equivalents and restricted cash	(8,106)	(13,626)
Cash, cash equivalents and restricted cash at beginning of period	39,673	31,598
Cash, cash equivalents and restricted cash at end of period	31,567	17,972
Supplemental disclosure of cash flow information:
Cash paid for interest	651	604
Cash paid for business taxes	$ 6	$ 104