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Retirement Plans - Narrative (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 USD ($) plan
Defined Benefit Plan Disclosure |
Defined contribution plan number | 6
United States |
Defined Benefit Plan Disclosure |
Number of retirement plans | 3
Number of defined benefit plans | 1
Defined contribution plan number | 2
Defined benefit plan, contributions by employer | $ | $ 300
Defined benefit plan, expected future employer contributions, current fiscal year | $ | $ 500
Canada |
Defined Benefit Plan Disclosure |
Defined contribution plan number | 2
Number of post-retirement benefit plan | 1
United Kingdom |
Defined Benefit Plan Disclosure |
Defined contribution plan number | 2
Defined benefit plan, contributions by employer | $ | $ 85
Defined benefit plan, expected future employer contributions, current fiscal year | $ | $ 340

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