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NON-CONTROLLING INTERESTS (Details) (USD $)
In Thousands, unless otherwise specified
 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, 2011
NON-CONTROLLING INTERESTS [Abstract]                      
Net (income) attributable to NCI in DSIT                 $ 61 $ (84) $ (22)
Net loss attributable to NCI in USSI                 1,214 1,108 571
Net Income (Loss) Attributable to Noncontrolling Interest $ 390 $ 382 $ 291 $ 212 $ 287 $ 276 $ 205 $ 256 $ 1,275 $ 1,024 $ 549