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, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 30,481	$ 31,515	$ 20,306
Total income tax benefit	10,744	8,082	4,297
Stock-based compensation net of tax	19,737	23,433	16,009
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	16,182	12,806	11,686
PSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 14,299	$ 18,709	$ 8,620

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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