Commitments and Contingencies (Details) - USD ($) $ in Millions	Dec. 31, 2017	Oct. 01, 2017
Commitments and Contingencies Disclosure [Abstract]
Accrued workers' compensation liabilities	$ 1.5	$ 1.6

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

No definition available.

Name:	us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant