Debt (GE Term Loan) - Additional Information (Detail) $ in Millions	Jan. 30, 2018 USD ($)
GE Term Loan [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 1.9

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.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration