Note 5 - Restructuring (Details) - Summary of Restructuring Liabilities (USD $)	3 Months Ended		9 Months Ended						3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013 October 2012 Plan [Member]	Sep. 30, 2013 October 2012 Plan [Member]	Jun. 30, 2013 October 2012 Plan [Member]	Dec. 31, 2012 October 2012 Plan [Member]	Sep. 30, 2013 October 2008 Plan [Member]	Sep. 30, 2013 October 2008 Plan [Member]	Sep. 30, 2013 October 2012 Plan [Member]	Sep. 30, 2014 October 2012 Plan [Member]	Sep. 30, 2013 October 2012 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance					$ 13,000	$ 49,000	$ 66,000	$ 896,000	$ 105,000	$ 448,000
Restructuring charges/credits	0	8,000	57,000	(35,000)						(102,000)	8,000	57,000	67,000
Adjustments										3,000
Payments									(105,000)	(349,000)	(25,000)	(70,000)	(914,000)
Ending balance	$ 0		$ 0		$ 13,000	$ 49,000	$ 66,000	$ 896,000