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Nature of business and future operations (Details)	Jun. 30, 2023 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash	$ 163,500,000
Long-term debt	$ 0

X

- Definition

Sum of investments and unrestricted cash as of the balance sheet date.

+ References

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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