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Common Stock - BSY Stock Repurchase Program Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
2026 Notes | Convertible Debt
Class of Stock [Line Items]
Extinguishment of debt	$ 10,000
Repayments of senior debt	9,797
Class B Common Stock
Class of Stock [Line Items]
Stock repurchase program, authorized amount	$ 200,000
Stock repurchase program, expiration date	Jun. 30, 2026
Common stock, reserved for future issuance amount	$ 98,358
Repurchase of Class B common stock under approved program (in shares)	1,457,454	912,737
Repurchases of Class B common stock under approved program	$ 65,029	$ 45,769

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