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Note 5 - Restructuring (Detail) - Summary of Restructuring Liabilities (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring charges (credits)	$ 52,000	$ 8,000
Balance	400,000
October 2008 Plan [Member]
Balance	448,000	728,000
Restructuring charges (credits)	(102,000)	(8,000)
Adjustments		4,000
Cash payments	(122,000)	(102,000)
Balance	$ 224,000	$ 622,000

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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