Condensed Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Prepaid expenses and other current assets, related party amount	$ 23	$ 0
Accrued liabilities, related party amount	$ 0	$ 32
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	41,629,367	41,622,962
Common stock, shares outstanding	41,393,660	41,243,137