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CAPITAL STOCK, Allocated Share-Based Compensation Expense (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended 14 Months Ended
Nov. 30, 2014
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2015
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     $ 8,311 $ 7,916 $ 9,514  
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost $ 2,300 $ 1,500   500   $ 4,300
Expected future amortization of unrecognized compensation cost [Abstract]            
2017     4,500      
2018     2,800      
2019     600      
Total unrecognized compensation cost related to non-vested stock-based compensation awards     $ 7,900      
Weighted-average recognition period of total unrecognized compensation cost (in years)     1 year 25 days      
Cost of Products Revenues [Member]            
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     $ 53 60 199  
Cost of Services Revenues [Member]            
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     189 381 624  
Research and Development Expense [Member]            
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     694 376 461  
Marketing and Selling Expense [Member]            
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     1,944 1,958 1,785  
General and Administrative Expense [Member]            
Stock-Based Compensation Expense [Abstract]            
Allocated share-based compensation expense     $ 5,431 $ 5,141 $ 6,445  
Common Stock [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number 933,750          
Restricted Stock [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number 31,250          
Minimum [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%          
Minimum [Member] | Employee Stock Option [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     7 years      
Maximum [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00%          
Maximum [Member] | Employee Stock Option [Member]            
Stock-Based Compensation Expense [Abstract]            
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     10 years