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Subsequent Events (Details) - USD ($)				12 Months Ended
	Feb. 22, 2016	Feb. 16, 2016	Jan. 08, 2015	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Subsequent Event
Repayments of Notes Payable				$ 300,000	$ 26,000	$ 700,000
Current portion of note payable				75,000
Payments for repurchase of common stock				12,806,000	$ 25,492,000	$ 2,190,000
NeuCo, Inc.
Subsequent Event
Repayments of Notes Payable			$ 375,000
Current portion of note payable				$ 75,000
NeuCo, Inc. | Subsequent events
Subsequent Event
Repayments of Notes Payable		$ 75,000
Minimum | Subsequent events | Modified Dutch Auction
Subsequent Event
Share price (in dollars per share)	$ 18.00
Maximum | Subsequent events | Modified Dutch Auction
Subsequent Event
Payments for repurchase of common stock	$ 30,000,000
Share price (in dollars per share)	$ 19.75

X

- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20
-Article 5

+ Details

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X

- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

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=31042434&loc=d3e3291-108585

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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