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Employee Retirement and Benefit Plans - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) employee plan	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Defined Contribution Plan Disclosure [Line Items]
Number of defined contributions benefit plan | plan	2
Defined contribution plan, maximum annual contributions per employee, percent	75.00%
Defined benefit plan, contributions by employer	$ 0.6	$ 0.6	$ 0.2
Defined contribution plan, employers matching contribution, vesting period	5 years
Total contributions for multiemployer pension and benefit plans		5.00%
Pension Plans | American Acquisition
Defined Contribution Plan Disclosure [Line Items]
Number of employees participating in multiemployer benefit and pension plans | employee	1,800
Expenses related multiemployer health and welfare and defined benefit pension plans	$ 7.1	$ 11.8	$ 11.0

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