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Quarterly Financial Information (Unaudited Supplemental Quarterly Financial Information) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jan. 01, 2016	Oct. 02, 2015	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015
Quarterly Financial Information [Line Items]
Total share based compensation	$ 1,300	$ 1,300	$ 8,765	$ 10,361	$ 6,370
Restructuring costs					3,604
Bargain purchase gain					3,015
Cost of Service [Member]
Quarterly Financial Information [Line Items]
Total share based compensation			5,758	5,359	3,556
Selling General and Administrative [Member]
Quarterly Financial Information [Line Items]
Total share based compensation			$ 3,007	$ 5,002	$ 2,814

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- Definition

Quarterly Financial Information [Line Items]

+ References

No definition available.

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- Definition

In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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-Name Accounting Standards Codification
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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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