Marketable Securities (Tables)

6 Months Ended

Jul. 04, 2015

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of Cash, Cash Equivalents and Short-term Investments

The Company's marketable securities within cash equivalents and investments included in the consolidated balance sheets are detailed as follows (in thousands):

		July 4, 2015
		Amortized		Unrealized		Unrealized		Fair
		Cost		Gain		Loss		Value
U.S. Treasury securities		$	634,476	$	717	$	(135)	$	635,058
Foreign government securities			24,999		-		-		24,999
Corporate debt securities			1,146,636		262		(735)		1,146,163
Time deposits			78,289		-		-		78,289
Equity securities			77		70		-		147
	Total	$	1,884,477	$	1,049	$	(870)	$	1,884,656

Amounts included in:
	Cash equivalents	$	41,638	$	-	$	-	$	41,638
	Investments		1,842,839		1,049		(870)		1,843,018
	Total	$	1,884,477	$	1,049	$	(870)	$	1,884,656

		December 31, 2014
		Amortized		Unrealized		Unrealized		Fair
		Cost		Gain		Loss		Value
U.S. Treasury securities		$	626,683	$	246	$	(157)	$	626,772
Foreign government securities			24,998		-		-		24,998
Corporate debt securities			984,668		125		(688)		984,105
Time deposits			64,240		-		-		64,240
Equity securities			77		70		-		147
	Total	$	1,700,666	$	441	$	(845)	$	1,700,262

Amounts included in:
	Cash equivalents	$	67,051	$	-	$	-	$	67,051
	Investments		1,633,615		441		(845)		1,633,211
	Total	$	1,700,666	$	441	$	(845)	$	1,700,262

Investments Classified by Contractual Maturity Date

The estimated fair value of marketable debt securities by maturity date is as follows (in thousands):

		July 4, 2015		December 31, 2014
Due in one year or less		$	956,322	$	872,872
Due after one year through three years			849,898		763,003
	Total	$	1,806,220	$	1,635,875