Revenue Changes in Contract Liabilities (Details) - USD ($) $ in Thousands	4 Months Ended
Jan. 20, 2019	Oct. 01, 2018
Changes in Contract Liabilities [Abstract]
Deferred Revenue	$ 48,926	$ 50,018
Deferred Revenue, Revenue Recognized	(1,592)
Deferred Revenue, Additions	$ 500

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

No definition available.

Name:	us-gaap_DeferredRevenueAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration