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Description of Business and Summary of Accounting Principles - Antidilutive shares (Details) - shares | 3 Months Ended | 12 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 24,332,213 | 21,635,589 | 24,276,642 | 18,044,750
Shares issuable upon conversion of Series A Preferred Stock |  |  |  |
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 9,795,106 | 9,975,106 | 9,795,118 | 9,795,118
Shares issuable upon conversion of Series B Preferred Stock |  |  |  |
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 6,391,334 | 6,199,568 | 6,391,198 | 3,486,962
Shares issuable upon conversion of Series C Preferred |  |  |  |
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 918,910 |  | 876,734 |
Shares issuable upon exercise of warrants |  |  |  |
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 2,364,697 | 2,217,349 | 2,361,926 | 2,003,406
Shares issuable upon exercise of stock options |  |  |  |
Antidilutive shares |  |  |  |
Shares excluded from the calculation of diluted loss per share because such amounts were antidilutive | 4,862,166 | 3,243,566 | 4,851,666 | 2,759,264

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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