Marketable Securities (Tables)

3 Months Ended

Apr. 01, 2017

Schedule of Available-for-Sale Securities Reconciliation

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

		April 1, 2017
		Amortized		Unrealized		Unrealized		Fair
		Cost		Gain		Loss		Value
U.S. Treasury securities		$	522,628	$	96	$	(712)	$	522,012
Foreign government securities			3,981		-		-		3,981
Corporate debt securities			1,770,252		916		(1,732)		1,769,436
Time deposits			305,462		-		-		305,462
Equity securities			77		70		-		147
	Total	$	2,602,400	$	1,082	$	(2,444)	$	2,601,038

Amounts included in:
	Cash equivalents	$	219,022	$	-	$	(3)	$	219,019
	Investments		2,383,378		1,082		(2,441)		2,382,019
	Total	$	2,602,400	$	1,082	$	(2,444)	$	2,601,038

		December 31, 2016
		Amortized		Unrealized		Unrealized		Fair
		Cost		Gain		Loss		Value
U.S. Treasury securities		$	570,695	$	253	$	(635)	$	570,313
Foreign government securities			17,999		-		(8)		17,991
Corporate debt securities			1,645,468		496		(2,126)		1,643,838
Time deposits			199,906		-		-		199,906
Equity securities			77		70		-		147
	Total	$	2,434,145	$	819	$	(2,769)	$	2,432,195

Amounts included in:
	Cash equivalents	$	124,793	$	1	$	-	$	124,794
	Investments		2,309,352		818		(2,769)		2,307,401
	Total	$	2,434,145	$	819	$	(2,769)	$	2,432,195

Investments Classified By Contractual Maturity Date

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

		April 1, 2017		December 31, 2016
Due in one year or less		$	1,456,067	$	1,388,537
Due after one year through three years			839,362		843,605
	Total	$	2,295,429	$	2,232,142