Fair Value (Tables)

12 Months Ended

Dec. 28, 2013

Fair Value Disclosures [Abstract]

Fair value of financial assets and liabilities

On a quarterly basis, Cadence measures at fair value certain financial assets and liabilities. The fair value of financial assets and liabilities was determined using the following levels of inputs as of December 28, 2013 and December 29, 2012:

	Fair Value Measurements as of December 28, 2013:
	Total		Level 1		Level 2		Level 3
	(In thousands)
Assets
Cash equivalents:
Money market funds	$	345,872	$	345,872	$	—	$	—
Bank certificates of deposit	2,300		—		2,300		—
Short-term investments:
Corporate debt securities	37,441		—		37,441		—
Bank certificates of deposit	20,308		—		20,308		—
United States Treasury securities	24,246		24,246		—		—
United States government agency securities	10,223		10,223		—		—
Commercial paper	2,493		—		2,493		—
Marketable equity securities	2,077		2,077		—		—
Trading securities held NQDC trust	23,960		23,960		—		—
2015 Notes Hedges	306,817		—		306,817		—
Foreign currency exchange contracts	262		—		262		—
Total Assets	$	775,999	$	406,378	$	369,621	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
Liabilities
Acquisition-related contingent consideration	$	4,091	$	—	$	—	$	4,091
2015 Notes Embedded Conversion Derivative	306,817		—		306,817		—
Total Liabilities	$	310,908	$	—	$	306,817	$	4,091

	Fair Value Measurements as of December 29, 2012:
	Total		Level 1		Level 2		Level 3
	(In thousands)
Assets
Cash equivalents:
Money market funds	$	566,334	$	566,334	$	—	$	—
Short-term investments:
Corporate debt securities	31,359		—		31,359		—
Bank certificates of deposit	27,826		—		27,826		—
United States Treasury securities	23,239		23,239		—		—
United States government agency securities	10,258		10,258		—		—
Commercial paper	5,783		—		5,783		—
Marketable equity securities	2,239		2,239		—		—
Trading securities held in NQDC trust	24,329		24,329		—		—
2015 Notes Hedges	303,154		—		303,154		—
Foreign currency exchange contracts	1,737		—		1,737		—
Total Assets	$	996,258	$	626,399	$	369,859	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
Liabilities
Acquisition-related contingent consideration	$	4,218	$	—	$	—	$	4,218
2015 Notes Embedded Conversion Derivative	303,154		—		303,154		—
Total Liabilities	$	307,372	$	—	$	303,154	$	4,218

Liabilities included in level 3 representing fair value of contingent consideration associated with acquisitions

The following table summarizes the level 3 activity for fiscal 2013 and 2012:

	(In thousands)
Balance as of December 31, 2011	$	3,911
Payments	(39		)
Adjustments	346
Balance as of December 29, 2012	$	4,218
Payments	(835		)
Adjustments	708
Balance as of December 28, 2013	$	4,091