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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 $ / shares Y
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
Expected term
Assumptions used in estimating fair value of warrants
Stock warrants, Measurement Input | Y	2.7	3.0
Volatility
Assumptions used in estimating fair value of warrants
Stock warrants, Measurement Input	0.2601	0.2507
Dividend rate
Assumptions used in estimating fair value of warrants
Stock warrants, Measurement Input	0.000	0.000
Discount rate
Assumptions used in estimating fair value of warrants
Stock warrants, Measurement Input	0.0387	0.0424

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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.

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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