Financial Instruments - Investments by significant investment category (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized cost	$ 150,865	$ 199,497
Unrealized Gains	1,868	1,129
Unrealized Losses	(41)
Fair Value	152,692	200,626
Cash and Cash Equivalents	130,737	97,164
Short-term investments	142,781	200,626
Long-term investments	9,911
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized cost	135,955	199,497
Unrealized Gains	1,868	1,129
Fair Value	137,823	200,626
Short-term investments	137,823	200,626
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized cost	14,910
Unrealized Losses	(41)
Fair Value	14,869
Short-term investments	4,958
Long-term investments	9,911
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	13,434	3,267
Money market funds \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 117,303	$ 93,897

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 excluding accrued interest, after allowance for credit loss, 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 excluding accrued interest, 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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