Investments (Tables)

6 Months Ended

Jun. 28, 2014

Investments

Summary of the amortized cost and estimated fair value of short-term investments for both available-for-sale and trading securities

The following is a summary of the amortized cost and estimated fair value of short-term investments for both available-for-sale and trading securities at June 28, 2014 and December 31, 2013.

	2014				2013
	Amortized		Fair		Amortized		Fair
(Thousands of dollars)	Cost		Value		Cost		Value
Money market funds	$	66,993	$	66,993	$	88,430	$	88,430
Corporate bonds	49,306		49,921		69,591		70,258
U.S. Government agency securities	43,615		43,629		27,299		27,147
Asset backed debt securities	10,791		10,791		8,446		8,477
Collateralized mortgage obligations	5,575		5,584		7,597		7,600
U.S. Treasury securities	5,039		5,035		5,258		5,223
Emerging markets debt mutual fund	-		-		17,693		16,941
Total available-for-sale short-term investments	181,319		181,953		224,314		224,076
High yield trading debt securities	101,802		103,163		49,352		50,428
Equity mutual fund	25,087		25,017		-		-
Money market funds held in trading accounts	5,728		5,728		11,033		11,033
Domestic equity ETF	4,853		5,107		-		-
Emerging markets trading debt mutual fund	3,282		2,988		3,202		2,858
Emerging markets trading debt securities	605		621		1,300		1,336
Other trading investments	505		557		841		918
Total available-for-sale and trading short-term investments	$	323,181	$	325,134	$	290,042	$	290,649

Summary of estimated fair value of fixed rate securities designated as available-for-sale, classified by the contractual maturity date of the security

The following table summarizes the estimated fair value of fixed rate securities designated as available-for-sale classified by the contractual maturity date of the security as of June 28, 2014.

(Thousands of dollars)	2014
Due within one year	$	1,963
Due after one year through three years	45,889
Due after three years	49,675
Total fixed rate securities	$	97,527