Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Cash Equivalents, Marketable Securities and Long-Term Investments Measured at Fair Value

Cash equivalents, marketable securities and long-term investments measured at fair value are classified in the table below in one of the three categories described above (in thousands):


	Fair Value Measurements
December 31, 2014	Level 1		Level 2		Level 3		Total
Certificates of deposit	$	8,674	$	—	$	—	$	8,674
Money market funds		169		—		—		169
U.S. treasuries		5,557		—		—		5,557
Corporate bonds		—		2,020		—		2,020
Government-sponsored enterprise securities		—		7,493		—		7,493
Auction rate securities		—		—		1,971		1,971

	$	14,400	$	9,513	$	1,971	$	25,884


	Fair Value Measurements
December 31, 2013	Level 1		Level 2		Level 3		Total
Certificates of deposit	$	685	$	—	$	—	$	685
Money market funds		2,275		—		—		2,275
U.S. treasuries		1,503		—		—		1,503
Corporate bonds		—		4,853		—		4,853
Government-sponsored enterprise securities		—		4,500		—		4,500
Auction rate securities		—		—		1,980		1,980

	$	4,463	$	9,353	$	1,980	$	15,796

Summary of Activity for Assets Measured at Fair Value Using Significant Unobservable Inputs

Activity for assets measured at fair value using significant unobservable inputs (Level 3) is presented in the table below (in thousands):


Balance at December 31, 2013	$	1,980
Total net realized gains included in earnings		—
Total net unrealized losses included in other comprehensive income		(9	)
Net transfers in and/out of Level 3		—

Balance at December 31, 2014	$	1,971

Amount of total losses for the period included in net loss attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2014	$	—

- 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.

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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.

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