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SHARE-BASED COMPENSATION - Summary of Share-Based Compensation Expense (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Summary of share-based compensation expense    
Benefit for income taxes $ (2) $ (36)
Net effect of share-based compensation expense on net loss $ 753 $ 919
Basic earnings per share $ 0.05 $ 0.06
Diluted earnings per share $ 0.05 $ 0.06
Pre-tax compensation expense for all unvested share-based awards   $ 1,113
Cost of sales:    
Summary of share-based compensation expense    
Share-based compensation expense $ 90 131
Selling, general and administrative    
Summary of share-based compensation expense    
Share-based compensation expense $ 663 $ 788