Shareholders' equity - Schedule of Stock-Based Compensation Related Amounts Recognized in the Consolidated Statements of Income for Equity Awards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 38,532	$ 24,497	$ 30,481
Total income tax benefit	8,236	9,072	10,744
Employee awards stock-based compensation net of tax	30,296	15,425	19,737
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	29,544	20,931	16,182
PSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 8,988	$ 3,566	$ 14,299