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Goodwill and Intangible Assets, Net - Additional Information (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2019
USD ($)
reporting_unit
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
reporting_unit
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Goodwill [Line Items]          
Accumulated goodwill impairment losses   $ 13,823 $ 43,643 $ 13,823  
Impairments $ 178   $ 29,820 0  
Number of reporting units closed | reporting_unit 2   2    
Loss on abandonment of assets     $ 3,071 20,928 $ 3,124
Intangible assets divested from deconsolidation     11,567    
Amortization expense     7,920 $ 11,666 $ 11,472
Patents, developed technologies and know-how          
Goodwill [Line Items]          
Loss on abandonment of assets   $ 16,027      
Trans Ova          
Goodwill [Line Items]          
Impairments     $ 29,642