Note 9 - Guarantees (Detail) - Warranty Liability (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Balance - January 1, 2012	$ 214
Acquisition of Thermonics	67
Payments made under product warranty	(124)
Accruals for product warranty	68	90
Balance - September 30, 2012	$ 225

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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