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Balance Sheets-Additional Information - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2019
Additional Information Of Balance Sheet [Line Items]      
Equity method investments   $ 4,196 $ 4,902
Expense paid for restructuring     1,847
Restructuring Charges $ 425   425
Accrued expenses and other current liabilities   68,498 73,171
Other liabilities   42,794 66,398
Animal Health      
Additional Information Of Balance Sheet [Line Items]      
Equity method investments   3,287 3,548
Pre tax restructuring charges   6,281  
Charges related to termination of a contract manufacturing agreement   3,500  
Employee separation costs   2,781  
Expense paid for restructuring   $ 691  
Accrued expenses and other current liabilities     2,568
Other liabilities     1,600
Additional charge for employee separation costs     $ 500