CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Deficit [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Gain (Loss) [Member] |
Beginning Balance at Dec. 31, 2020 | $ 32,986 | $ 3 | $ 136,868 | $ (103,886) | | $ 1 |
Beginning Balance (shares) at Dec. 31, 2020 | | 25,546,257 | | | 105,144 | |
Stock-based compensation | 1,403 | | 1,403 | | | |
Issuance of common stock, net of issuance costs | 28,115 | | 28,115 | | | |
Issuance of common stock, net of issuance costs (shares) | | 2,033,899 | | | | |
Exercise of stock options | 240 | | 240 | | | |
Exercise of stock options (shares) | | 15,708 | | | | |
Net income (loss) | (936) | | | (936) | | |
Unrealized gain (loss) on marketable securities | 2 | | | | | 2 |
Ending Balance at Mar. 31, 2021 | 61,810 | $ 3 | 166,626 | (104,822) | | 3 |
Ending Balance (shares) at Mar. 31, 2021 | | 27,595,864 | | | 105,144 | |
Beginning Balance at Dec. 31, 2020 | 32,986 | $ 3 | 136,868 | (103,886) | | 1 |
Beginning Balance (shares) at Dec. 31, 2020 | | 25,546,257 | | | 105,144 | |
Net income (loss) | (25,540) | | | | | |
Unrealized gain (loss) on marketable securities | (3) | | | | | |
Ending Balance at Sep. 30, 2021 | 40,852 | $ 3 | 170,277 | (129,426) | | (2) |
Ending Balance (shares) at Sep. 30, 2021 | | 27,624,197 | | | 105,144 | |
Beginning Balance at Mar. 31, 2021 | 61,810 | $ 3 | 166,626 | (104,822) | | 3 |
Beginning Balance (shares) at Mar. 31, 2021 | | 27,595,864 | | | 105,144 | |
Stock-based compensation | 1,848 | | 1,848 | | | |
Exercise of stock options | 277 | | 277 | | | |
Exercise of stock options (shares) | | 24,000 | | | | |
Net income (loss) | (11,775) | | | (11,775) | | |
Unrealized gain (loss) on marketable securities | (4) | | | | | (4) |
Ending Balance at Jun. 30, 2021 | 52,156 | $ 3 | 168,751 | (116,597) | | (1) |
Ending Balance (shares) at Jun. 30, 2021 | | 27,619,864 | | | 105,144 | |
Stock-based compensation | 1,481 | | 1,481 | | | |
Exercise of stock options | 45 | | 45 | | | |
Exercise of stock options (shares) | | 4,333 | | | | |
Net income (loss) | (12,829) | | | (12,829) | | |
Unrealized gain (loss) on marketable securities | (1) | | | | | (1) |
Ending Balance at Sep. 30, 2021 | 40,852 | $ 3 | 170,277 | (129,426) | | (2) |
Ending Balance (shares) at Sep. 30, 2021 | | 27,624,197 | | | 105,144 | |
Beginning Balance at Dec. 31, 2021 | 32,605 | $ 3 | 171,597 | (138,966) | | (29) |
Beginning Balance (shares) at Dec. 31, 2021 | | 27,624,197 | | | 105,144 | |
Stock-based compensation | 1,316 | | 1,316 | | | |
Net income (loss) | (8,470) | | | (8,470) | | |
Unrealized gain (loss) on marketable securities | (33) | | | | | (33) |
Ending Balance at Mar. 31, 2022 | 25,418 | $ 3 | 172,913 | (147,436) | | (62) |
Ending Balance (shares) at Mar. 31, 2022 | | 27,624,197 | | | 105,144 | |
Beginning Balance at Dec. 31, 2021 | 32,605 | $ 3 | 171,597 | (138,966) | | (29) |
Beginning Balance (shares) at Dec. 31, 2021 | | 27,624,197 | | | 105,144 | |
Net income (loss) | (18,555) | | | | | |
Unrealized gain (loss) on marketable securities | 0 | | | | | |
Ending Balance at Sep. 30, 2022 | 44,765 | $ 4 | 202,311 | (157,521) | $ 0 | (29) |
Ending Balance (shares) at Sep. 30, 2022 | | 41,199,197 | | | 105,144 | |
Beginning Balance at Mar. 31, 2022 | 25,418 | $ 3 | 172,913 | (147,436) | | (62) |
Beginning Balance (shares) at Mar. 31, 2022 | | 27,624,197 | | | 105,144 | |
Stock-based compensation | 1,085 | | 1,085 | | | |
Net income (loss) | (10,168) | | | (10,168) | | |
Unrealized gain (loss) on marketable securities | (2) | | | | | (2) |
Ending Balance at Jun. 30, 2022 | 16,333 | $ 3 | 173,998 | (157,604) | | (64) |
Ending Balance (shares) at Jun. 30, 2022 | | 27,624,197 | | | 105,144 | |
Stock-based compensation | 1,413 | | 1,413 | | | |
Issuance of common stock, net of issuance costs | 26,901 | $ 1 | 26,900 | | | |
Issuance of common stock, net of issuance costs (shares) | | 13,575,000 | | | | |
Net income (loss) | 83 | | | 83 | | |
Unrealized gain (loss) on marketable securities | 35 | | | | | 35 |
Ending Balance at Sep. 30, 2022 | $ 44,765 | $ 4 | $ 202,311 | $ (157,521) | $ 0 | $ (29) |
Ending Balance (shares) at Sep. 30, 2022 | | 41,199,197 | | | 105,144 | |