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Net Income per Share (Details 2) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015	Mar. 21, 2016	Feb. 22, 2016	Aug. 23, 2014
Share Repurchase Program
Share repurchase program, amount authorized to be repurchased			$ 20,000		$ 30,000
Number of shares repurchased and retired		144,900
Average repurchase price per share (in dollars per share)		$ 31.33
Amount available for future repurchases	$ 28,100
Repayments of Notes Payable	$ 75	$ 300
Modified Dutch Auction
Share Repurchase Program
Share repurchase program, amount authorized to be repurchased				$ 30,000
Number of common stock tendered				1,164
Minimum | Modified Dutch Auction
Share Repurchase Program
Share price (in dollars per share)				$ 18.00
Maximum | Modified Dutch Auction
Share Repurchase Program
Share price (in dollars per share)				$ 19.75

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The cash outflow for a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

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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 and retired during the period.

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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-Number 210
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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