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Note 4 - Goodwill and Intangible Assets (Detail) - Changes in the Amount of the Carrying Value of Finite-Lived Intangible Assets (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2012
Balance - January 1, 2012	$ 432		$ 432
Amortization	(263)	(67)	(476)
Balance - June 30, 2012	1,897
Thermonics [Member]
Acquisition of Thermonics	$ 1,728

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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