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FAIR VALUE (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Summary of fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents and investments) measured at fair value on a recurring basis as of September 30, 2016 (in thousands):

	Level 1				Level 2				Level 3				Total
Assets:
Cash	$	338,510			$	—			$	—			$	338,510
Money market funds	175,328				—				—				175,328
Commercial paper	8,261				—				—				8,261
Auction rate securities	—				—				11,082				11,082
Total assets measured at fair value	$	522,099			$	—			$	11,082			$	533,181

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents and investments) measured at fair value on a recurring basis as of December 31, 2015 (in thousands):

	Level 1				Level 2				Level 3				Total
Assets:
Cash	$	405,597			$	—			$	—			$	405,597
Money market funds	5,043				—				—				5,043
Commercial paper	11,178				—				—				11,178
Auction rate securities	—				—				15,507				15,507
Total assets measured at fair value	$	421,818			$	—			$	15,507			$	437,325

Summary of changes in the fair value of the company's level 3 assets

The following tables summarize changes in fair value of the Company’s Level 3 assets for the three and nine months ended September 30, 2016 and 2015 (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2016				2015				2016				2015
Balance at beginning of period	$	11,036			$	16,049			$	15,507			$	17,151
Decrease in unrealized loss included in accumulated other comprehensive loss	46				8				275				256
Settlements	—				(550		)		(4,700		)		(1,900		)
Balance at end of period	$	11,082			$	15,507			$	11,082			$	15,507

The following table summarizes changes in fair value of the Company’s Level 3 assets from December 31, 2014 to September 30, 2016 (in thousands):

	Auction Rate Securities
Balance at December 31, 2014	$	17,151
Decrease in unrealized loss included in accumulated other comprehensive loss	256
Settlements	(1,900		)
Balance at December 31, 2015	15,507
Decrease in unrealized loss included in accumulated other comprehensive loss	275
Settlements	(4,700		)
Balance at September 30, 2016	$	11,082

X

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ 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 (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 2: 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=66048111&loc=d3e19190-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- 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

Reference 2: 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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X

- References

No definition available.

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