Investments (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized cost		$ 14,944,000
Unrealized gains		0
Unrealized losses		(12,000)
Estimated fair value		14,932,000
Unrealized gain (loss)	$ 0
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost		14,944,000
Unrealized gains		0
Unrealized losses		(12,000)
Estimated fair value		$ 14,932,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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