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SEGMENT REPORTING (Schedule of Sales Data by Geographical Area) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 117,103 $ 129,420 $ 164,439
Net Sales by Segment (as a percent) 100.00% 100.00% 100.00%
CHINA [Member]      
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 9,490 $ 15,465 $ 6,945
Net Sales by Segment (as a percent) 8.00% 12.00% 4.00%
JAPAN [Member]      
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 57,483 $ 58,999 $ 93,203
Net Sales by Segment (as a percent) 49.00% 46.00% 57.00%
INDIA [Member]      
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 34,836 $ 37,424 $ 26,595
Net Sales by Segment (as a percent) 30.00% 29.00% 16.00%
TAIWAN [Member]      
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 7,904 $ 6,706 $ 13,332
Net Sales by Segment (as a percent) 7.00% 5.00% 8.00%
Other [Member]      
Segment Reporting Information [Line Items]      
Net Sales by Segment $ 7,390 $ 10,826 $ 24,364
Net Sales by Segment (as a percent) 6.00% 8.00% 15.00%