Note 3 - Acquisition (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 16, 2012 Thermonics [Member]	Dec. 31, 2012 Thermonics [Member]	Dec. 31, 2012 Thermonics [Member]	Dec. 31, 2011 Thermonics [Member]
Note 3 - Acquisition (Details) [Line Items]
Business Combination, Consideration Transferred		$ 3,802	$ 3,802
Restructuring Charges		313			313
Business Acquisition, Transaction Costs			485			148
Goodwill, Acquired During Period		50	50
Revenues	$ 39,426	$ 43,376		$ 4,692