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Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2014

Text Block [Abstract]

Summary of Fair Value Measurements of Cash Equivalents, Available-for-Sale Securities and Contingent Consideration Liability

The fair value measurements of our cash equivalents, available-for-sale marketable securities and contingent consideration liability are identified at the following levels within the fair value hierarchy (in thousands):

		June 30, 2014 Fair Value Measurements
		Total				Level 1				Level 2				Level 3
Assets:
Cash equivalents:
Money market funds		$	92,223			$	92,223			$	—			$	—
Total			92,223				92,223				—				—
Marketable securities:
Commercial paper securities			9,998				—				9,998				—
Corporate debt securities			9,907				—				9,907				—
U.S. government sponsored entity debt securities			117,222				—				117,222				—
Total			137,127				—				137,127				—
Total cash equivalents and marketable securities		$	229,350			$	92,223			$	137,127			$	—
Liabilities:
Contingent consideration liability			1,650				—				—				1,650
Total		$	1,650			$	—			$	—			$	1,650
		December 31, 2013 Fair Value Measurements
		Total				Level 1				Level 2				Level 3
Assets:
Cash equivalents:
Money market funds		$	6,934			$	6,934			$	—			$	—
U.S. government sponsored entity debt securities			121,290				—				121,290				—
Total			128,224				6,934				121,290				—
Liabilities:
Contingent consideration liability			1,570				—				—				1,570
Total		$	1,570			$	—			$	—			$	1,570

Schedule of Changes in Estimated Fair Value of Contingent Consideration Liability

The following sets forth the changes in the estimated fair value for our contingent consideration liability classified as Level 3 (in thousands):

Fair value as of December 31, 2013		$	1,570
Change in fair value			80
Fair value as of June 30, 2014		$	1,650

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- 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 2

-Subparagraph (a,b,bb)

-URI http://asc.fasb.org/extlink&oid=25499696&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 2C

-URI http://asc.fasb.org/extlink&oid=25499696&loc=SL7498348-110258



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

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X

- 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=25499696&loc=d3e19279-110258



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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