Income Taxes - Schedule of Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jul. 25, 2018
Deferred Tax Assets:
Accruals and reserves	$ 1,114
Goodwill	47,203
Intangible assets	6,575
Net operating loss carryforwards	51
Business transaction costs	860
Other	1,019
Gross deferred tax assets	56,822
Valuation allowance	(911)
Total deferred tax assets	55,911
Deferred Tax Liabilities:
Prepaid assets	(687)
Investment in partnership	(3,517)
Property, plant, and equipment	(3,238)
Total deferred tax liabilities	(7,442)
Net deferred tax assets	$ 48,469	$ 47,500