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v3.22.2.2

Stockholders' equity (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock options outstanding (shares) | 3,168,000 |  |  | 3,168,000 | 3,080,000 |  |  |  |
Stockholders' Equity Attributable to Parent | $ 607,735,000 | $ 592,511,000 | $ 592,786,000 | $ 607,735,000 | $ 615,914,000 | $ 554,995,000 | $ 238,165,000 | $ 211,471,000 | $ 216,018,000
Stock Repurchase Program, Authorized Amount | 100 |  |  | 100 |  |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 68,400,000 |  |  | $ 68,400,000 |  |  |  |  |
Treasury Stock, Shares, Acquired | 1,540 |  |  | 4,462 |  |  |  |  |
Treasury Stock Acquired, Average Cost Per Share | $ 6.40 |  |  | $ 7.09 |  |  |  |  |
Stock Repurchased During Period, Value | $ 9,856,000 | 11,762,000 | 10,000,000 | $ 31,618,000 |  |  |  |  |
Treasury Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | $ (145,231,000) | $ (135,375,000) | $ (123,613,000) | $ (145,231,000) | $ (113,613,000) | $ (113,613,000) | $ (113,613,000) | $ (113,613,000) | $ (113,613,000)
Common Class A [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock authorized (shares) | 500,000,000 |  |  | 500,000,000 | 500,000,000 |  |  |  |
Common stock outstanding (shares) | 129,655,000 |  |  | 129,655,000 | 129,815,000 |  |  |  |
Common Stock, Voting Rights, Number |  |  |  | 1 |  |  |  |  |
Common Stock, Shares, Issued | 129,655,000 |  |  | 129,655,000 | 129,815,000 |  |  |  |
Common Class B [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock authorized (shares) | 150,000,000 |  |  | 150,000,000 | 150,000,000 |  |  |  |
Common stock outstanding (shares) | 26,259,000 |  |  | 26,259,000 | 26,659,000 |  |  |  |
Common Stock, Voting Rights, Number |  |  |  | 10 |  |  |  |  |
Common Stock, Shares, Issued | 26,259,000 |  |  | 26,259,000 | 26,659,000 |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted stock units outstanding (shares) | 8,195,000 |  |  | 8,195,000 | 8,714,000 |  |  |  |
Performance Shares [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted stock units outstanding (shares) | 1,082,000 |  |  | 1,082,000 | 1,134,000 |  |  |  |

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