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

Commitments And Contingencies Commitments and Contingencies - Litigation (Details) - Recreational Data Services Plaintiff [Member] - USD ($) $ in Millions	Mar. 18, 2015	Sep. 26, 2014
Customer Contracts [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party		$ 51.3
Positive Outcome of Litigation [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount (Deprecated 2017-01-31)	$ 0.6