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Note 4 - Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

June 30, 2018	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	2,887	$	—	$	—	$	2,887
Marketable investments:
Available-for-sale securities		—		10,573		—		10,573
Total assets at fair value	$	2,887	$	10,573	$	—	$	13,460

December 31, 2017	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	126	$	—	$	—	$	126
Marketable investments:
Available-for-sale securities		—		21,728		—		21,728
Total assets at fair value	$	126	$	21,728	$	—	$	21,854

- 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 + Details