Summary of Significant Accounting Policies Stock-based Compensation Valuation (Details)	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Lexicon incremental borrowing rate	970.00%		900.00%
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, ExpectedVolatilityRate, Employees	107.00%	102.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Employee	2.40%	0.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Employees	4 years	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate, Employees	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Officers and Non-employee Directors	91.00%	90.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Officers and Non-employee Directors	1.90%	1.10%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Officers and Non-employee Directors	7 years	7 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate, Officers and Non-employee Directors	0.00%	0.00%

Lexicon incremental borrowing rate

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the employees' option's term.

+ References

No definition available.

+ Details

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the officers' and non-employee directors' option's term.

+ References

No definition available.

+ Details

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- Definition

The expected term assumption that is used in valuing an option on its own shares for employees.

+ References

No definition available.

+ Details

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- Definition

The expected term assumption that is used in valuing an option on its own shares for officers and non-employee directors.

+ References

No definition available.

+ Details

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- Definition

For officers and non-employee directors, the estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

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- Definition

For employees, the estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

+ Details

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares for employees.

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No definition available.

+ Details

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares for officers and non-employee directors.

+ References

No definition available.

+ 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.

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No definition available.

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