v3.4.0.3

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Summary of Valuation of Investments and Financial Instruments Pricing Levels

The following table summarizes the valuation of our investments and financial instruments by the above pricing levels as of the valuation dates listed:

						March 31, 2016
		Total				(Level 1)				(Level 2)
						(Thousands of dollars)
Investments:
Money market mutual funds		$	17,877			$	17,877			$	—
Commercial paper			5,995				—				5,995
U.S. Government agencies			27,302				—				27,302
Corporate bonds and notes			250,301				—				250,301
			301,475				17,877				283,598
Deferred compensation plan assets			2,334				2,334				—
Total		$	303,809			$	20,211			$	283,598

						December 31, 2015
		Total				(Level 1)				(Level 2)
Investments:
Money Market Mutual Funds		$	18,181			$	18,181			$	—
Commercial Paper			5,981				—				5,981
U.S. Government Agencies			11,469				—				11,469
Corporate bonds and notes			264,228				—				264,228
			299,859				18,181				281,678
Deferred compensation plan assets			2,294				2,294				—
Total		$	302,153			$	20,475			$	281,678

X

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19279-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a,b,bb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=36462937&loc=SL7498348-110258

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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X

- References

No definition available.

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