BUSINESS COMBINATIONS (Detail Textuals 1) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]                        
Net sales contributed by Omnilink $ 17,577 $ 17,412 $ 17,606 $ 18,050 $ 18,785 $ 23,334 $ 25,653 $ 21,678 $ 70,645 $ 89,450 $ 93,869  
Omnilink Systems, Inc.                        
Business Acquisition [Line Items]                        
Net sales contributed by Omnilink                     8,700  
Adjustment for depreciation expense                     100  
Adjustment for amortization expense                     300  
Adjustment for interest expense                     100  
Adjustment for acquisition related costs                     $ 1,000 $ 1,000