The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Commitments And Contingencies (Details) - complaint			1 Months Ended
Commitments And Contingencies (Details) - complaint	Apr. 26, 2017	Aug. 17, 2016	Dec. 29, 2016
Securities Complaints [Member]
Loss Contingencies [Line Items]
Number of complaints		3
Derivative Complaints [Member]
Loss Contingencies [Line Items]
Number of complaints			2
Barnes Complaint [Member]
Loss Contingencies [Line Items]
Number of complaints	2