Note 7 - Investment in Telkoor (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 16, 2011	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Business Combinations [Abstract]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)	1,136,666
Business Acquisition, Percentage of Voting Interests Acquired	8.80%
Other than Temporary Impairment Losses, Investments		$ 196	$ 218	$ 196
Investments, Fair Value Disclosure		$ 542		$ 542		$ 780
Number of Reportable Segments					2