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SEGMENT REPORTING (Summary of the Company's Segment Net Sales, Gross Profit and Segment Margin) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
SEGMENT REPORTING |  |  |
Net Sales by Segment | $ 86,512 | $ 117,103 | $ 129,420
Net Sales by Segment (as a percent) | 100.00% | 100.00% | 100.00%
Gross profit/(loss) by Segment | $ 28,356 | $ 27,868 | $ 22,128
Gross profit/(loss) by Segment (as a percent) | 33.00% | 24.00% | 17.00%
Income (loss) before income taxes | $ 920 | $ (31,320) | $ (28,646)
Operating segments |  |  |
SEGMENT REPORTING |  |  |
Total | 20,103 | 18,496 | 7,666
Operating segments | Equipment |  |  |
SEGMENT REPORTING |  |  |
Net Sales by Segment | $ 61,735 | $ 87,361 | $ 105,988
Net Sales by Segment (as a percent) | 71.00% | 75.00% | 82.00%
Gross profit/(loss) by Segment | $ 20,263 | $ 21,470 | $ 21,000
Gross profit/(loss) by Segment (as a percent) | 33.00% | 25.00% | 20.00%
Total | $ 12,010 | $ 12,097 | $ 6,583
Operating segments | Services |  |  |
SEGMENT REPORTING |  |  |
Net Sales by Segment | $ 24,777 | $ 29,742 | $ 23,432
Net Sales by Segment (as a percent) | 29.00% | 25.00% | 18.00%
Gross profit/(loss) by Segment | $ 8,093 | $ 6,398 | $ 1,128
Gross profit/(loss) by Segment (as a percent) | 33.00% | 22.00% | 5.00%
Total | $ 8,093 | $ 6,399 | $ 1,083
General and Corporate |  |  |
SEGMENT REPORTING |  |  |
General and Corporate | $ (19,183) | $ (49,816) | $ (36,312)

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