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Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Exercise price, percentage of fair market value at grant date, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Exercise Price, Percentage Of Fair Market Value On Grant Date, Minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Exercise Price, Percentage Of Fair Market Value On Grant Date, Minimum Interest receivable Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Net loss Net loss Net losses Net loss Net Income (Loss) Attributable to Parent Erroneous 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Receivable with Services Redeemable convertible preferred stock: Temporary Equity [Abstract] Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]