Goodwill and other intangible assets - Amortization expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Goodwill and other intangible assets | |||
| Amortization expense | $ 50,383 | $ 47,330 | $ 38,166 |
| Cost of sales | |||
| Goodwill and other intangible assets | |||
| Amortization expense | 44,618 | 42,050 | 34,051 |
| Administrative expense | |||
| Goodwill and other intangible assets | |||
| Amortization expense | $ 5,765 | $ 5,280 | $ 4,115 |