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

6 Months Ended

Jun. 30, 2014

Available For Sale Investments [Abstract]

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

	Amortized cost				Fair value
	June 30, 2014		December 31, 2013		June 30, 2014		December 31, 2013
Bonds, notes and other securities:
U.S. government and agencies	$	758	$	530	$	759	$	531
Equity securities	$	6			$	9
Total short-term investments	$	764	$	530	$	768	$	531
Asset-backed securities	$	44	$	46	$	39	$	38
Total long-term investments	$	44	$	46	$	39	$	38

Investments Classified by Contractual Maturity Date [Table Text Block]

Less than one year	$524
Due in 1-5 years	235
Due in 5-10 years	0
Due after 10 years (1)	39
Total	$798

Schedule of Fair Value and Gross Unrealized Losses of Investments by Category and Length of Time in Continuous Unrealized Loss Position [Table Text Block]

		June 30, 2014
		12 months or greater				Total
	Number of securities in a loss position	Fair value		Unrealized losses (1)		Fair value		Unrealized losses
Asset-backed securities	21	$	39	$	(5)	$	39	$	(5)
Total long-term investments	21	$	39	$	(5)	$	39	$	(5)

		December 31, 2013
		12 months or greater				Total
	Number of securities in a loss position	Fair value		Unrealized losses (1)		Fair value		Unrealized losses
Asset-backed securities	20	$	38	$	(8)	$	38	$	(8)
Total long-term investments	20	$	38	$	(8)	$	38	$	(8)