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(Loss) Earnings Per Share | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
(Loss) Earnings Per Share | 9. (Loss) Earnings Per Share Basic and diluted net loss per share attributable to common stockholders was calculated as follows (in thousands, except share and per share data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
​ | ​ | 2021 | ​ | 2020 | ​ | 2021 | ​ | 2020
Numerator: | ​ | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |
Net loss | ​ | $ | (6,133) | ​ | $ | (3,227) | ​ | $ | (32,508) | ​ | $ | (10,707)
Accretion of preferred stock to redemption value | ​ |  | — | ​ |  | (217) | ​ |  | — | ​ |  | (217)
Net loss attributable to common stockholders | ​ | $ | (6,133) | ​ | $ | (3,444) | ​ | $ | (32,508) | ​ | $ | (10,924)
Denominator: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Weighted average common shares outstanding — basic and diluted | ​ |  | 20,126,672 | ​ |  | 360,356 | ​ |  | 6,975,386 | ​ |  | 396,071
Net loss per share attributable to common stockholders — basic and diluted | ​ | $ | (0.30) | ​ | $ | (9.56) | ​ | $ | (4.66) | ​ | $ | (27.58)
​ The Company’s potentially dilutive securities, which include stock options, shares of convertible preferred stock, warrants to purchase shares of convertible preferred stock and warrants to purchase shares of common stock, have been excluded from the computation of diluted net loss per share attributable to common stockholders, as the effect would be to reduce the net loss per share attributable to common stockholders. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect: ​
​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30,
​ | ​ | 2021 |  | 2020
Options to purchase common stock |  | 2,657,333 |  | 961,885
Warrants to purchase redeemable convertible preferred stock (as converted to common stock) |  | — |  | 108,406
Warrants to purchase common stock | ​ | 716,131 | ​ | —
Redeemable convertible preferred stock (as converted to common stock) |  | — |  | 11,929,584
​ |  | 3,373,464 |  | 12,999,875
​

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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