Note 5 - Restructuring (Details) - Summary of Restructuring Liabilities (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Restructuring Cost and Reserve [Line Items]
Ending balance	$ 200,000		$ 200,000
Restructuring charges (credits)	9,000	91,000	(43,000)	83,000
October 2012 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	210,000		896,000
Ending balance	66,000		66,000
Restructuring charges (credits)	9,000		59,000
Cash payments	$ (153,000)		$ (889,000)