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Note 4 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

						Fair Value Measurements at Reporting Date Using
		December 31, 2015				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash equivalents:
Money market funds		$	61,385			$	-			$	61,385			$	-
Bank certificates of deposit			250				-				250				-
Total cash equivalents		$	61,635			$	-			$	61,635			$	-
Investments:
Corporate debt securities		$	2,001			$	-			$	2,001			$	-
Bank certificates of deposit			25,750				-				25,750				-
Total investments		$	27,751			$	-			$	27,751			$	-

						Fair Value Measurements at Reporting Date Using
		December 31, 2014				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash equivalents:
Money market funds		$	69,552			$	-			$	69,552			$	-
Bank certificates of deposit			3,000				-				3,000				-
Total cash equivalents		$	72,552			$	-			$	72,552			$	-
Investments:
Bank certificates of deposit		$	6,750			$	-			$	6,750			$	-

X

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ 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)
-URI http://asc.fasb.org/extlink&oid=36462937&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 1
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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X

- References

No definition available.

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