Long-Term Debt and Credit Facilities - 2018 and 2019 Incremental Term Loan (Details) - USD ($) $ in Millions	Apr. 16, 2019	Jul. 13, 2018
Long-Term Debt and Credit Facilities
Proceeds from incremental term loans	$ 30.0	$ 30.0

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

Name:	us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration