Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 18,099	$ 36,773
Short-term investments	62,233	54,270
Prepaid expenses and other current assets	3,083	2,704
Total current assets	83,415	93,747
Property and equipment, net	125	148
Operating lease right-of-use asset	552	266
Other assets	1,689	1,830
Total assets	85,781	95,991
Current Liabilities:
Accounts payable	2,080	2,540
Accrued expenses	7,048	7,193
Operating lease liability	384	278
Current portion of long-term debt	2,143	0
Total current liabilities	11,655	10,011
Long-term debt, net	22,834	24,877
Operating lease liabilities, less current portion	179	0
Stockholders' equity:
Convertible preferred stock, $0.0001 par value; 10,000,000 shares authorized as of March 31, 2023; 10,248 shares issued and outstanding as of March 31, 2023 and December 31, 2022	5,452	5,452
Common stock, $0.0001 par value; 400,000,000 shares authorized; 38,410,935 and 38,345,140 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	4	4
Additional paid-in capital	272,827	270,699
Accumulated other comprehensive loss	(87)	(178)
Accumulated deficit	(227,083)	(214,874)
Total stockholders' equity (deficit)	51,113	61,103
Total liabilities and stockholders' equity (deficit)	$ 85,781	$ 95,991