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Capital Stock - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 25, 2016	Sep. 27, 2015	Sep. 08, 2016	Sep. 08, 2015
Equity [Abstract]
Stock repurchase program, authorized amount			$ 30,000,000	$ 35,000,000
Common stock shares repurchased	1,574,316
Common stock repurchased value	$ 20,447,000	$ 27,030,000
Remaining dollar value of authorization under the new share repurchase program	$ 29,600,000

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: 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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-Topic 210
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-Section S99
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-Section 50
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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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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

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