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Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Land and land improvements $ 9,844 $ 9,844
Buildings and building improvements 12,088 12,088
Furniture and fixtures 1,236 1,228
Equipment 32,634 31,150
Leasehold improvements 6,452 6,260
Breeding stock 968 868
Computer hardware and software 5,425 5,684
Construction and other assets in progress 2,729 2,754
Property, plant and equipment, gross 71,376 69,876
Less: Accumulated depreciation and amortization (38,619) (34,952)
Property, plant and equipment, net $ 32,757 $ 34,924