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v3.22.0.1

Retirement Benefit Plan (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Retirement Benefit Plan |  |  |
Employer percentage match of employees contribution | 100.00% |  |
Employer maximum contribution as a percentage of gross pay | 5.00% |  |
Employer matching contributions for retirement plan (in dollars) | $ 4.4 | $ 5.6 | $ 6.8

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- References No definition available. + Details
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Balance Type: | na
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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