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Summary of Significant Accounting Policies and Other Items - Tax Receivable Agreement (TRA) (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 12, 2018	Dec. 31, 2019
Summary of Significant Accounting Policies and Other Items
Tax savings payable to TRA Holders (as a percent)	85.00%	85.00%
Portion of net cash savings per tax agreement retained by entity	15.00%
Gain on change in TRA liability		$ 5.3

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- Definition

The amount of gain or (loss) arising due to change in tax receivable agreement.

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- Definition

Per tax receivable agreement, the amount of the tax savings benefit to be retained by the entity.

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Per tax receivable agreement, the percentage of savings in federal, state and local income tax or franchise tax that the entity realizes or is deemed to realize in certain circumstances.

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