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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Assets And Liabilities Measured At Fair Value

The following table presents information about the Company's assets and liabilities measured at fair value:

					Fair Value Measurements at March 31, 2017
	Total				Level 1				Level 2				Level 3
Assets
Cash equivalents	$	306,000			$	306,000			$	—			$	—
Short-term investments	164,928				164,928				—				—
Interest rate swap	50				—				50				—
Auction rate securities	1,146				—				—				1,146
Total assets	$	472,124			$	470,928			$	50			$	1,146
Liabilities
Long-term notes	$	40,500			$	—			$	40,500			$	—
Total liabilities	$	40,500			$	—			$	40,500			$	—
					Fair Value Measurements at December 31, 2016
	Total															Level 1				Level 2				Level 3
Assets
Cash equivalents	$	179,699			$	179,699			$	—			$	—
Short-term investments	206,616				206,616				—				—
Interest rate swap	77				—				77				—
Auction rate securities	1,144				—				—				1,144
Total assets	$	387,536			$	386,315			$	77			$	1,144
Liabilities
Long-term notes	$	41,351			$	—			$	41,351			$	—
Total liabilities	$	41,351			$	—			$	41,351			$	—

Fair Value, Assets Measured on Recurring Basis

	Three Months Ended March 31,
	2017				2016
Auction Rate Securities
Balance, beginning of period	$	1,144			$	1,136
Change in fair value and accretion	2				2
Balance, end of period	$	1,146			$	1,138
Contingent Purchase Consideration
Balance, beginning of period	$	—			$	20
Period transactions	—				—
Change in fair value and currency fluctuations	—				1
Balance, end of period	$	—			$	21

Fair Value, Liabilities Measured on Recurring Basis

	Three Months Ended March 31,
	2017				2016
Auction Rate Securities
Balance, beginning of period	$	1,144			$	1,136
Change in fair value and accretion	2				2
Balance, end of period	$	1,146			$	1,138
Contingent Purchase Consideration
Balance, beginning of period	$	—			$	20
Period transactions	—				—
Change in fair value and currency fluctuations	—				1
Balance, end of period	$	—			$	21

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=66048111&loc=d3e19279-110258

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Subparagraph (bb)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ 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=66048111&loc=d3e19279-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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