Investments (Tables)

9 Months Ended

Oct. 03, 2015

Investments

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

	October 3, 2015				December 31, 2014
	Amortized		Fair		Amortized		Fair
(Thousands of dollars)	Cost		Value		Cost		Value
Money market funds	$	100,648	$	100,648	$	142,432	$	142,432
Corporate bonds		-		-		11,000		11,015
U.S. Government agency securities		-		-		9,684		9,666
Other available-for-sale securities		-		-		3,933		3,983
Total available-for-sale short-term investments		100,648		100,648		167,049		167,096
Domestic equity securities		167,770		158,815		-		-
High yield debt securities		125,347		122,178		187,491		181,483
Domestic equity mutual funds		86,309		80,525		83,809		82,542
Domestic equity ETFs		78,925		77,443		31,307		32,651
Foreign equity securities		78,876		76,669		-		-
Money market funds held in trading accounts		40,152		40,152		21,401		21,401
Foreign equity mutual fund		20,000		19,831		-		-
Collateralized loan obligation		10,000		9,791		-		-
Other trading securities		4,651		3,391		6,173		5,393
Total trading short-term investments		612,030		588,795		330,181		323,470
Total short-term investments	$	712,678	$	689,443	$	497,230	$	490,566