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Note 20 - Segment Information (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Industrial Group [Member]
Sales Revenue, Segment [Member]
Dec. 31, 2012
Industrial Group [Member]
Sales Revenue, Segment [Member]
Dec. 31, 2013
Industrial Group [Member]
Dec. 31, 2012
Industrial Group [Member]
Dec. 31, 2013
Electronics Group [Member]
Sales Revenue, Segment [Member]
Dec. 31, 2012
Electronics Group [Member]
Sales Revenue, Segment [Member]
Dec. 31, 2013
Electronics Group [Member]
Dec. 31, 2012
Electronics Group [Member]
Dec. 31, 2013
International Operation [Member]
Dec. 31, 2012
International Operation [Member]
Note 20 - Segment Information (Details) [Line Items]                                        
Number of Operating Segments                 2                      
Concentration Risk, Percentage                 3.00%   82.00% 78.00%     7.00% 6.00%        
Export Sales                                     $ 45,163,000 $ 53,019,000
Revenues 73,859,000 76,278,000 82,166,000 78,411,000 67,466,000 78,763,000 98,912,000 96,463,000 310,714,000 341,604,000     276,136,000 286,046,000     34,578,000 55,558,000 95,392,000 100,003,000
Long-Lived Assets                                     16,656,000 18,214,000
Assets, Net                                     $ 20,779,000 $ 26,495,000