Fair Value Measurements

12 Months Ended

Dec. 31, 2018

Note 3. Fair Value Measurements

The following table presents the balances of assets measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the dates presented (in thousands):

	December 31, 2018						December 31, 2017
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	11,896	$	—	$	11,896	$	10,393	$	—	$	10,393
Commercial paper		—		—		—		—		1,000		1,000
Total cash equivalents		11,896		—		11,896		10,393		1,000		11,393
Short-term investments:
U.S. government agency securities		—		7,482		7,482		—		13,970		13,970
Corporate notes and bonds		—		3,736		3,736		—		7,503		7,503
Commercial paper		—		9,943		9,943		—		8,972		8,972
Treasury bills		—		17,382		17,382		—		8,386		8,386
Total short-term investments		—		38,543		38,543		—		38,831		38,831
Total	$	11,896	$	38,543	$	50,439	$	10,393	$	39,831	$	50,224

We did not have any Level 3 assets as of December 31, 2018 or 2017. There were no liabilities measured at fair value as of December 31, 2018 or 2017.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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