Note 7 - Available-for-Sale Investments (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Amortized cost				Fair value
	June 30, 2016		December 31, 2015		June 30, 2016		December 31, 2015
Bonds, notes and other securities:
U.S. government and agencies			$	100			$	100
Total short-term investments			$	100			$	100
Asset-backed securities  (1)	$	34	$	37	$	30	$	33
Total long-term investments	$	34	$	37	$	30	$	33