- Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands		6 Months Ended
Mar. 26, 2016	Jun. 24, 2016	Dec. 25, 2015
Goodwill [Line Items]
Goodwill before impairment		$ 337,307	$ 314,705
Accumulated impairment loss		(112,079)	(46,210)
Goodwill, net		225,228	268,495
Acquired goodwill and other		21,660
Impairment loss	$ (65,869)	(65,869)
Foreign currency translation		942
Staffing Services
Goodwill [Line Items]
Goodwill before impairment		206,450	210,281
Accumulated impairment loss		(96,910)	(46,210)
Goodwill, net		109,540	164,071
Acquired goodwill and other		(3,831)
Impairment loss		(50,700)
Foreign currency translation		0
Managed Services
Goodwill [Line Items]
Goodwill before impairment		130,857	104,424
Accumulated impairment loss		(15,169)	0
Goodwill, net		115,688	$ 104,424
Acquired goodwill and other		25,491
Impairment loss		(15,169)
Foreign currency translation		$ 942

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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