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Stock Warrants - Assumptions used in estimating fair value of warrants (Details) - December 2018 warrants | Mar. 31, 2023 $ / shares Y | Dec. 31, 2022 Y $ / shares | Dec. 31, 2021 $ / shares Y
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Estimated per-share fair value of common stock |  |  |
Assumptions used in estimating fair value of warrants |  |  |
Stock warrants, Measurement Input | $ / shares | 5.01 | 5.01 | 3.76
Expected term |  |  |
Assumptions used in estimating fair value of warrants |  |  |
Stock warrants, Measurement Input | Y | 2.7 | 3.0 | 4.0
Volatility |  |  |
Assumptions used in estimating fair value of warrants |  |  |
Stock warrants, Measurement Input | 0.2601 | 0.2507 | 0.303
Dividend rate |  |  |
Assumptions used in estimating fair value of warrants |  |  |
Stock warrants, Measurement Input | 0.000 | 0.000 | 0.000
Discount rate |  |  |
Assumptions used in estimating fair value of warrants |  |  |
Stock warrants, Measurement Input | 0.0387 | 0.0424 | 0.012

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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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- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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