Investments (Tables)

12 Months Ended

Dec. 31, 2011

Investments [Abstract]

Summary of cash and cash equivalents and Short-term investments

The following tables summarize Cadence’s cash and cash equivalents and short-term investments as of December 31, 2011:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
Classified as cash and cash equivalents:
Cash and interest bearing deposits	$	117,500	$	----	$	----	$	117,500
Cash equivalents – money market funds		484,102		----		----		484,102
Total cash and cash equivalents	$	601,602	$	----	$	----	$	601,602
Classified as short-term investments:
Available-for-sale securities	$	1,830	$	1,207	$	----	$	3,037

The following tables summarize Cadence’s cash and cash equivalents and short-term investments as of January 1, 2011:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
Classified as cash and cash equivalents:
Cash and interest bearing deposits	$	93,728	$	----	$	----	$	93,728
Cash equivalents – money market funds		463,681		----		----		463,681
Total cash and cash equivalents	$	557,409	$	----	$	----	$	557,409
Classified as short-term investments:
Available-for-sale securities	$	3,262	$	9,453	$	----	$	12,715

Summary of net recognized gains (losses) on sale of available-for-sale equity securities

	2011			2010		2009
	(In thousands)
Gains on sale of available-for-sale securities	$	8,052		$	----	$	2,341
(Losses) on sale of available-for-sale securities		(43	)		----		----
Net gains on sale of available-for-sale securities	$	8,009		$	----	$	2,341

Carrying value of non-marketable securities

	2011		2010
	(In thousands)
Cost method	$	6,157	$	5,560
Equity method		4,303		3,714
Total non-marketable securities in other assets	$	10,460	$	9,274

Gains on sale of non-marketable investments

	2011		2010		2009
	(In thousands)
Gains on sale of non-marketable investments	$	8,281	$	4,916	$	----

Write-downs related to cost method investments

	2011		2010		2009
	(In thousands)
Write-down of cost method investments	$	----	$	1,500	$	5,207