Note 4 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	Fair Value Measurements at the End of the Reporting Period
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis at December 31, 2016
Cash and cash equivalents
Money market mutual funds	$	-	$	162	$	-	$	162
Items measured at fair value on a recurring basis at December 31, 2015
Cash and cash equivalents
Money market mutual funds	$	-	$	161	$	-	$	161

Fair Value Measurements, Nonrecurring [Table Text Block]

Items measured at fair value on a nonrecurring basis at December 31, 2015 (nil at December 31, 2016)	Level 1		Level 2		Level 3		Total		Total Losses
Long-term investments
Cost method securities (note 9)	$	-	$	-	$	2,414	$	2,414	$	(4,953	)