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Related Party Transactions - Narrative (Details)	Oct. 09, 2018
Class B common stock | Terence E. Adderley Revocable Trust K
Related Party Transaction [Line Items]
Ownership percentage of parent company	91.60%

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- Definition

Ownership Percentage of Parent Company

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No definition available.

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Balance Type:	na
Period Type:	instant

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Period Type:	duration

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- Details

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