Schedule of Shares of Common Stock Purchased under Repurchase Plan (Detail) - USD ($) $ in Thousands	3 Months Ended	11 Months Ended	12 Months Ended
Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Jan. 01, 2016	Oct. 02, 2015	Sep. 30, 2016
Class Of Stock [Line Items]
Number of shares repurchased					2,562,122	304,577
Common Stock, Par Value $.20 Per Share
Class Of Stock [Line Items]
Number of shares repurchased	0	102,267	202,310	0		304,577
Share repurchased amount	$ 0	$ 6,657	$ 12,077	$ 0		$ 18,734

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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