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Note 17 - Patents and Other Intangibles (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Amortization of Intangible Assets	$ 55,000	$ 48,000
Impairment of Intangible Assets, Finite-lived	55,000
Increase (Decrease) in Intangible Assets, Current	$ 144,000	$ 270,000
Trademarks [Member]
Finite-Lived Intangible Assets, Remaining Amortization Period	10

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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