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Note 6 - Restructuring Charge (Details) (USD $)	3 Months Ended			12 Months Ended
Note 6 - Restructuring Charge (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2010	Dec. 31, 2013	Dec. 31, 2012
Restructuring and Related Activities [Abstract]
Restructuring and Related Cost, Number of Positions Eliminated		10
Restructuring Charges		$ 253,000	$ 3,300,000	$ (67,000)	$ 253,000
Restructuring Reserve, Accrual Adjustment	$ 67,000

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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