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Related Party Transactions (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Dec. 18, 2018 USD ($)	Aug. 26, 2016	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Related Party Transaction [Line Items]
Operating lease right-of-use assets			$ 32,423		$ 32,423
Operating lease liabilities			32,424		32,424
Conversion ratio, preferred stock to common stock		1
Percentage retained under tax receivable agreement		15.00%
Estimated termination payment			$ 51,300		$ 51,300
Discount rate, tax receivable agreement liability			4.94%		4.94%
Affiliated Entity
Related Party Transaction [Line Items]
Rent expense			$ 600		$ 2,000
Rent expense				$ 1,100		$ 5,000
Operating lease right-of-use assets			6,800		6,800
Operating lease liabilities			7,500		$ 7,500
Affiliated Entity | Mosing Holdings
Related Party Transaction [Line Items]
Percentage of tax benefits realized payable		85.00%
Cumulative deficit, period					36 months
Tax receivable agreement, estimated liability			$ 200		$ 200
Real Property Acquisition From Mosing Companies | Affiliated Entity
Related Party Transaction [Line Items]
Purchase from related party	$ 37,000
Term for certain rights and obligations within agreement with related party	10 years

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- Definition

Percentage of Tax Benefits Realized Payable Under Tax Receivable Agreement

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Percentage of Tax Benefits Retained Under Tax Receivable Agreement

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- Definition

Tax Receivable Agreement, Liability

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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No definition available.

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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
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Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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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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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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