Note 4 - Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2019

Notes to Financial Statements

Fair Value Disclosures [Text Block]

Note

4.

Fair Value of Financial Instruments

Fair value is an exit price representing the amount that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy contains

three

levels of inputs that

may

be used to measure fair value, in accordance with ASC

820,

as follows:

● Level 1: inputs, which include quoted prices in active markets for identical assets or liabilities;

● Level 2: inputs, which include observable inputs other than Level 1 inputs, such as quoted prices for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. For available-for-sale securities, the Company reviews trading activity and pricing as of the measurement date. When sufficient quoted pricing for identical securities is not available, the Company uses market pricing and other observable market inputs for similar securities obtained from various third -party data providers. These inputs either represent quoted prices for similar assets in active markets or have been derived from observable market data; and

● Level 3: inputs, which include unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the underlying asset or liability. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies, or similar valuation techniques, as well as significant management judgment or estimation.

In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value.

As of

September 30, 2019,

financial assets measured and recognized at fair value on a recurring basis and classified under the appropriate level of the fair value hierarchy as described above were as follows (in thousands):

September 30, 2019	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	3,061	$	—	$	—	$	3,061
Commercial paper		—		4,344		—		4,344
Marketable investments:
Available-for-sale securities		—		6,448		—		6,448
Total assets at fair value	$	3,061	$	10,792	$	—	$	13,853

As of

December 31, 2018,

financial assets measured and recognized at fair value on a recurring basis and classified under the appropriate level of the fair value hierarchy as described above was as follows (in thousands):

December 31, 2018	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	3,036	$	—	$	—	$	3,036
Commercial paper		—		1,047		—		1,047
Marketable investments:
Available-for-sale securities		—		9,523		—		9,523
Total assets at fair value	$	3,036	$	10,570	$	—	$	13,606

Money market funds and U.S. Treasury bills are highly liquid investments and are actively traded. The pricing information on these investment instruments are readily available and can be independently validated as of the measurement date. This approach results in the classification of these securities as Level

1

of the fair value hierarchy.

Corporate debt, U.S. government-backed securities, and commercial paper are measured at fair value using Level

2

inputs. The Company reviews trading activity and pricing for these investments as of each measurement date. When sufficient quoted pricing for identical securities is

not

available, the Company uses market pricing and other observable market inputs for similar securities obtained from various

third

party data providers. These inputs represent quoted prices for similar assets in active markets or these inputs have been derived from observable market data. This approach results in the classification of these securities as Level

2

of the fair value hierarchy. The average remaining maturity of the Company’s Level

2

investments as of

September 30, 2019

is less than

nine

months and all of these investments are rated by S&P and Moody’s at A or better. The Company recognizes transfers between levels of the fair value hierarchy as of the end of the reporting period. There were

no

transfers within the hierarchy during the quarter and year ended

September 30, 2019

and

December 31, 2018,

respectively.