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]
Restructuring charges (credits)	$ (9,000)	$ (91,000)	$ 43,000	$ (83,000)
Ending balance	200,000		200,000
October 2008 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	224,000	622,000	448,000	728,000
Restructuring charges (credits)		91,000	(102,000)	83,000
Adjustments	3,000	162,000	3,000	166,000
Cash payments	(122,000)	(178,000)	(244,000)	(280,000)
Ending balance	$ 105,000	$ 697,000	$ 105,000	$ 697,000