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Schedule of Other Current Liabilities Other Current Liabilities [Table Text Block] Income Tax Authority Income Tax Authority [Domain] Accounting Standards Update 2019-12 Accounting Standards Update 2019-12 [Member] Area of office space Area For Rental Office Space Area for rental office space. Severance and termination benefits. Severance And Termination Benefits Severance and termination benefits Employee-related Liabilities, Current, Total Salaries and benefits Employee-related Liabilities, Current Summary of significant accounting policies. Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Stock Options to Purchase Common Stock Share-Based Payment Arrangement, Option [Member] Total liabilities and stockholders’ equity Liabilities and Equity Plan Name Plan Name [Domain] Total other current liabilities Other current liabilities Other Liabilities, Current Workforce reduction percentage Restructuring and Related Cost, Number of Positions Eliminated, Period Percent Change in accounting principle, accounting standards update, adopted Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Income Statement [Abstract] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Fair value liabilities, transfers amount between levels 1 and 2 Fair Value Liabilities Transfers Amount Between Levels 1 and 2 Fair value liabilities transfers amount between levels 1 and 2. Schedule of Subsidiary or Equity Method Investee [Table] Total current liabilities Liabilities, Current Total cash equivalents, Unrealized Gains Cash And Cash Equivalents Fair Value Disclosure Accumulated Gross Unrealized Gain Before Tax Cash and cash equivalents fair value disclosure accumulated gross unrealized gain before tax. Total asset measured at fair value, Unrealized Gains Assets Fair Value Disclosure Accumulated Gross Unrealized Gain Before Tax Assets fair value disclosure accumulated gross unrealized gain before tax. Number of short-term investments in unrealized loss positions Number Of Short Term Investments In Unrealized Loss Positions Number of short-term investments in unrealized loss positions. 2022 Operating Leases, Future Minimum Payments Due, Next 12 Months Business Acquisition, Acquiree [Domain] Fair Value, Recurring Fair Value, Recurring [Member] Office Furniture and Equipment Office Furniture And Equipment [Member] Office furniture and equipment. Income Taxes Income Tax, Policy [Policy Text Block] Preferred stock, shares authorized Preferred Stock, Shares Authorized Entity Small Business Entity Small Business Development or regulatory milestones were deemed probable of achievement Development Or Regulatory Milestones Were Deemed Probable Of Achievement Development or regulatory milestones were deemed probable of achievement. Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Percentage of aggregate number of shares of common stock outstanding on last day of preceding year added to plan Percentage Of Aggregate Number Of Shares Of Common Stock Outstanding On Last Day Of Preceding Year Added To Plan Percentage of aggregate number of shares of common stock outstanding on last day of preceding year added to plan. Mireca Medicines GmbH. Mireca Medicines Gmb H [Member] Mireca Medicines GmbH Short term operating lease expiration date. 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Balance Sheet Related Disclosures [Abstract] Proceeds from Sale, Maturity and Collection of Investments, Total Maturity of investments Proceeds from Sale, Maturity and Collection of Investments Issuance of common stock upon vesting of restricted stock units, net of shares withheld for employee taxes. Issuance Of Common Stock Upon Vesting Of Restricted Stock Units Net Of Shares Withheld For Employee Taxes Issuance of common stock upon vesting of restricted stock units, net of shares withheld for employee taxes, Shares Employee Retirement Plan Retirement Benefits [Text Block] Geographical Geographical [Domain] Statistical Measurement Statistical Measurement [Domain] Statement of Stockholders' Equity [Abstract] Rainbio inc. Rain Bio Inc [Member] RainBio Auditor Location Auditor Location Total asset measured at fair value, Unrealized Losses Assets Fair Value Disclosure Accumulated Gross Unrealized Loss Before Tax Assets fair value disclosure accumulated gross unrealized loss before tax. Number of terminated employees in reduction- in-force. Number Of Terminated Employees In Reduction In Force Number of terminated employees Subsequent Events [Abstract] Weighted Average Remaining Contractual Term, Options Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Proceeds from exercise of stock options Proceeds from Stock Options Exercised Research and development tax credits Deferred Tax Assets, Tax Credit Carryforwards, Research Schedule of Property and Equipment and Depreciation Calculated using Straight-line Method over useful Life of Asset Property, Plant and Equipment [Table Text Block] Additional contingent payments upon achievement of certain development and regulatory milestone Additional Contingent Payments Upon Achievement Of Certain Development And Regulatory Milestone Additional contingent payments upon achievement of certain development and regulatory milestone. 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Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Deferred rent Deferred Rent Credit, Current Asset Class Asset Class [Axis] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Fair value of capital equipment Fair Value Of Capital Equipment Less: Fair value of capital equipment Entity Tax Identification Number Entity Tax Identification Number Income Statement Location Income Statement Location [Axis] Number of Restricted Stock Units, Cancelled/Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Common stock, $0.0001 par value; 500,000,000 shares authorized, 21,696,433 and 21,357,773 shares issued and outstanding as of December 31, 2022 and 2021,respectively Common Stock, Value, Issued Retained Earnings (Accumulated Deficit), Total Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit) Equity Components Equity Components [Axis] Unrealized loss on available-for-sale securities, net of tax Unrealized loss on available-for-sale securities Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent, Total Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Consolidated Entities [Domain] Accounting Standards Update Accounting Standards Update [Domain] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Prepaid Expense, Current, Total Prepaid expenses Prepaid Expense, Current Schedule of Prepaid Expenses and Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Operating expenses: Operating Expenses [Abstract] Increase in number of shares reserved Common Stock Increase in Number Of Shares Reserved Common stock increase in number of shares reserved. Expected term (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Payments to Acquire Investments, Total Purchases of investments Payments to Acquire Investments Debt Securities Available For Sale [Table] Debt Securities, Available-for-Sale [Table] Entity Voluntary Filers Entity Voluntary Filers Expected volatility, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Severance payments not paid Liability balance as of December 31, 2022 Restructuring Reserve, Current Accrued Research and Development Costs Accrued Research And Development Costs Policy [Text Block] Accrued research and development costs. Retirement Benefits [Abstract] Document Transition Report Document Transition Report Other Liabilities, Current [Abstract] Assets measured at fair value Total asset measured at fair value, Aggregate Fair Value Assets measured at fair value Assets, Fair Value Disclosure Weighted-Average Grant Date Fair Value Per Share, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total Issuance of common stock upon vesting of restricted stock units, Shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted Average Exercise Price, Exercised Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Investments Marketable Securities, Policy [Policy Text Block] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net loss Net loss Net Income (Loss) Attributable to Parent Operating loss carryforwards expiration beginning year Operating Loss Carryforwards Expiration Beginning Year Operating loss carryforwards expiration beginning year. 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Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Award Type Award Type [Domain] Statement [Line Items] Statement [Line Items] Accrued interest and penalties related to unrecognized tax benefits Unrecognized Tax Benefits Income Tax Accrued Interest And Penalties Expense Unrecognized tax benefits income tax accrued interest and penalties expense. Lease expense Operating Lease, Expense Title of 12(b) Security Title of 12(b) Security Increase (Decrease) in Accounts Payable, Total Accounts payable Increase (Decrease) in Accounts Payable Restructuring Cost and Reserve [Line Items] Common Stock Common Stock [Member] Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Subsequent Event, Date Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Equity Component Equity Component [Domain] Amount incurred and paid upon Merger related services Payments for Merger Related Costs Entity Address, State or Province Entity Address, State or Province Contractual Obligation, Total Contractual obligation Contractual Obligation Geographical Geographical [Axis] Number of litigation complaints Number of Litigation Complaints Number of litigation complaints. Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Document Type Document Type Federal net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Domestic Holdback liability for acquisition of in-process research and development Contingent holdback liabilities Holdback liability for acquisition of in-process research and development. Holdback Liability For Acquisition Of In Process Research And Development Entity Shell Company Entity Shell Company Severance and other termination benefits, at fair value. 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RSUs Restricted Stock Units Restricted Stock Units (RSUs) [Member] Schedule of Reconciliation of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Common stock additional aggregate number of shares reserved Common Stock Additional Aggregate Number Of Shares Reserved Common stock additional aggregate number of shares reserved. Warrants to Purchase Common Stock Warrant [Member] Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Summary of Restricted Stock Units (RSUs) Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Summary of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Recently Adopted and Recently Issued Accounting Pronouncements Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Common stock, shares outstanding Common Stock, Shares, Outstanding Accretion of premium and discounts on short-term investments Accretion (Amortization) of Discounts and Premiums, Investments Baltimore, Maryland MARYLAND Research and development tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Level 2 Fair Value, Inputs, Level 2 [Member] Additional payment of Merger Related costs contingent upon the consummation of the proposed Merger Additional payment of Merger Related costs Additional payment of Merger Related costs. Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Income Taxes [Abstract] Income taxes. CalciMedica CalciMedica Inc [Member] CalciMedica inc. Addition based on tax position related to current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Commitments and contingencies (Note 5) Commitments and Contingencies Aggregate number of shares issued Common stock, shares issued Common Stock, Shares, Issued Minimum Minimum [Member] Schedule of Restructuring, Impairment and Other Costs Restructuring and Related Costs [Table Text Block] 2020 Equity Incentive Plan Two Thousand And Twenty Equity Incentive Plan [Member] Two thousand and twenty equity incentive plan. Adjustments To additional paid In capital, issuance of common stock upon vesting of restricted stock units, net of shares withheld for employee taxes. 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Schedule Of Available For Sale Securities [Line Items] Debt Securities, Available-for-Sale [Line Items] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Measurement Frequency Measurement Frequency [Axis] Number of additional awards grant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Subsequent Event [Table] General and Administrative Expense, Total General and administrative General and Administrative Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted Average Exercise Price, Outstanding Weighted Average Exercise Price, Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Research and Development Research and Development Expense [Member] Risk-free interest rate, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Right-of-use asset arising from the adoption of ASC 842 Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Accumulated Deficit Retained Earnings [Member] Upfront cash payment made Upfront Cash Payment Made Upfront cash payment made. Money Market Funds Money Market Funds [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Total Property and equipment, at cost Property, Plant and Equipment, Gross Total indebtedness amount Debt Instrument, Decrease, Forgiveness Entity Interactive Data Current Entity Interactive Data Current Tax credits Tax Credit Carryforward, Amount Entity Public Float Entity Public Float Supplemental disclosure of noncash items: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Prepaid expenses and other non-current assets Prepaid Expense and Other Assets, Noncurrent Leasehold Improvements Leasehold Improvements [Member] Local Phone Number Local Phone Number Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Balance—beginning of year Balance—end of year Unrecognized Tax Benefits Summary of Company's Financial Assets Measured at Fair Value Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Basic and Diluted Net Loss Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Basis of Presentation and Principles of Consolidation Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Number of Options, Options Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Consolidated Entities [Axis] Options granted Number of Options, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Income Statement Location Income Statement Location [Domain] Number of employees terminated Restructuring and Related Cost, Number of Positions Eliminated Property, Plant and Equipment [Abstract] Number of Restricted Stock Units, Balance Number of Restricted Stock Units, Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Beginning Balance, Shares Ending Balance, Shares Shares, Outstanding Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Tax credit carryforwards expiration beginning year Tax Credit Carryforward Expiration Beginning Year Tax credit carryforward expiration beginning year. Number of Options, Outstanding Number of Options, Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Document Fiscal Year Focus Document Fiscal Year Focus Prepaid Expense and Other Assets, Current [Abstract] Net loss per share-basic Earnings Per Share, Basic Earnings Per Share, Basic, Total Assets Assets [Abstract] Increase (Decrease) in Accrued Liabilities, Total Accrued research and development Increase (Decrease) in Accrued Liabilities Net deferred tax assets Deferred Tax Assets, Net Expected volatility, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Total prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total cash equivalents, Amortized Cost Cash And Cash Equivalents Fair Value Disclosure Amortized Cost Basis Cash and cash equivalents fair value disclosure amortized cost basis. Aggregate principal amount Debt Instrument, Face Amount Financial Instrument [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Schedule of Restructuring and Related Costs [Table] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Number of newly hired employees Number Of Newly Hired Employees Number of newly hired employees. Total short-term investments, Unrealized Losses Short Term Investment Fair Value Disclosure Accumulated Gross Unrealized Loss Before Tax Short-term investment fair value disclosure accumulated gross unrealized loss before tax. Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Income Tax Authority Income Tax Authority [Axis] Type of Restructuring [Domain] Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Total short-term investments, Unrealized Gains Short Term Investment Fair Value Disclosure Accumulated Gross Unrealized Gain Before Tax Short-term investment fair value disclosure accumulated gross unrealized gain before tax. Current assets: Assets, Current [Abstract] Schedule of Components of Deferred Tax Assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Contributions by employer Defined Contribution Plan, Employer Discretionary Contribution Amount Acquired in process research and development in accrued liabilities Acquired In Process Research And Development In Accrued Liabilities Acquired in process research and development in accrued liabilities. Measurement Frequency Measurement Frequency [Domain] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Restructuring, Impairment and Other Costs of Terminated Programs Restructuring and Related Activities Disclosure [Text Block] Operating lease remaining term Lessee, Operating Lease, Remaining Lease Term Cover [Abstract] Number of Restricted Stock Units, Vested Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Contractual obligation of contract in effect Contractual Obligation Of Contract In Effect Contractual obligation of contract in effect. Current liabilities: Liabilities, Current [Abstract] Total cash equivalents, Unrealized Losses Cash And Cash Equivalents Fair Value Disclosure Accumulated Gross Unrealized Loss Before Tax Cash and cash equivalents fair value disclosure accumulated gross unrealized loss before tax. Maximum Maximum [Member] Severance payments upon merger Potential Severance Payments Upon Merger Potential severance payments upon merger. Summary of Stock-Based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Other-than-temporary impairment losses Other-than-temporary Impairment Loss, Debt Securities, Available-for-Sale, Recognized in Earnings Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Number of Options, Exercised Stock issued on exercise of stock options, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Level 3 Fair Value, Inputs, Level 3 [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Impairment of right-of-use asset Operating Lease, Impairment Loss Deferred Tax Liabilities, Gross, Total Total deferred tax liabilities Deferred Tax Liabilities, Gross Stock issued on exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Subsidiary or Equity Method Investee [Line Items] Segments Segment Reporting, Policy [Policy Text Block] Property and equipment useful life of asset Property, Plant and Equipment, Useful Life Extended short term operating lease expiration date. Extended Short Term Operating Lease Expiration Date Extended short term operating lease expiration date Deferred tax assets Deferred Tax Assets, Net [Abstract] Common stock, shares authorized Common Stock, Shares Authorized Trading Symbol Trading Symbol Other Other Sundry Liabilities, Current Subsequent Event Type [Axis] Restructuring, Impairment and Other Costs of Terminated Programs Restructuring Impairment And Other Costs Of Terminated Programs [Policy Text Block] Restructuring impairment and other costs of terminated programs. Other Deferred Tax Assets, Other Noncash lease expense Operating Lease, Right-of-Use Asset, Amortization Expense Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from Sale of Property, Plant, and Equipment, Total Accounts Payable, Current, Total Accounts payable Accounts payable Accounts Payable, Current Number of remaining programs Number Of Remaining Programs Number of remaining programs. Plan Name Plan Name [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Common stock, par value Common Stock, Par or Stated Value Per Share Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Variable lease payments Variable Lease, Cost Comprehensive Loss Comprehensive Income, Policy [Policy Text Block] Number of Restricted Stock Units, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Weighted Average Exercise Price, Granted Common stock at an exercise price Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Anti-dilutive securities excluded from calculation of diluted net loss per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total cash equivalents, Aggregate Fair Value Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure