Note 1 - Basis of Consolidation and Presentation (Tables)

6 Months Ended

Jun. 30, 2014

Accounting Policies [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Level 1		Level 2		Level 3		Total
	(In thousands)
As of June 30, 2014
Money Market Funds	$	8,147	$	--	$	--	$	8,147
Commercial Paper		22,525		--		--		22,525
Total	$	30,672	$	--	$	--	$	30,672
As of December 31, 2013
Money Market Funds	$	7,266	$	--	$	--	$	7,266
Commercial Paper		13,976		--		--		13,976
Total	$	21,242	$	--	$	--	$	21,242

Schedule of Long-term Debt Instruments [Table Text Block]

	June 30, 2014		December 31, 2013
	(In thousands)
Total carrying amounts of long-term debt	$	9,203	$	10,324
Estimated fair value of long-term debt	$	9,110	$	10,156