Restructuring and Other Charges (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Cadence's Restructuring Plans
Beginning Balance	$ 14,224us-gaap_RestructuringReserve	$ 4,343us-gaap_RestructuringReserve	$ 5,027us-gaap_RestructuringReserve
Restructuring and other charges (credits), net	10,252us-gaap_RestructuringCharges	17,999us-gaap_RestructuringCharges	113us-gaap_RestructuringCharges
Non-cash charges	(2,450)	(309)
Cash payments	(15,285)us-gaap_PaymentsForRestructuring	(7,895)us-gaap_PaymentsForRestructuring	(923)us-gaap_PaymentsForRestructuring
Effect of foreign currency translation	(531)	86	126
Ending Balance	6,210us-gaap_RestructuringReserve	14,224us-gaap_RestructuringReserve	4,343us-gaap_RestructuringReserve
Severance and Benefits [Member]
Cadence's Restructuring Plans
Beginning Balance	10,672	0	46
Restructuring and other charges (credits), net	8,004	17,589	(29)
Non-cash charges	0	0
Cash payments	(13,967)	(6,944)	(17)
Effect of foreign currency translation	(247)	27	0
Ending Balance	4,462	10,672	0
Excess Facilities [Member]
Cadence's Restructuring Plans
Beginning Balance	3,552	4,343	4,976
Restructuring and other charges (credits), net	(945)	101	147
Non-cash charges	0	0
Cash payments	(1,056)	(951)	(906)
Effect of foreign currency translation	(284)	59	126
Ending Balance	1,267	3,552	4,343
Other [Member]
Cadence's Restructuring Plans
Beginning Balance	0	0	5
Restructuring and other charges (credits), net	3,193	309	(5)
Non-cash charges	(2,450)	(309)
Cash payments	(262)	0	0
Effect of foreign currency translation	0	0	0
Ending Balance	$ 481	$ 0	$ 0

Restructuring activities non cash charges adjustments including accretion.

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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- Definition

Amount 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

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-SubTopic 10

-Section 45

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-Section S99

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

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- Definition

Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

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-Publisher FASB

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-Topic 420

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