Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, issued (in shares)	15,190,376	11,986,927
Common stock, outstanding (in shares)	15,073,153	11,869,704
Treasury stock, shares (in shares)	117,223	117,223