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Restructuring (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2013
USD ($)
Dec. 31, 2014
USD ($)
Jun. 30, 2014
position
Dec. 31, 2013
USD ($)
Restructuring        
Number of full time employee positions eliminated | position     80  
Percentage of full time employee positions eliminated     30.00%  
Restructuring charge $ 400,000      
Restructuring reserve related to severance payments   $ 0   $ 100,000
Cost of product sales        
Restructuring        
Restructuring charge   2,500,000    
Selling, general and administrative expenses        
Restructuring        
Restructuring charge   500,000    
CTRM Business        
Restructuring        
Restructuring charge   $ 3,000,000