Composition of Certain Financial Statement Captions (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts receivable, net:
Accounts receivable	$ 215,925	$ 136,551
Less: allowance for credit losses	(1,573)	(1,934)
Accounts receivable, net	214,352	134,617
Inventories, net:
Consumable supplies	41,298	23,005
Finished products	24,259	25,142
Work in-process	4,711	3,238
Raw materials	5,826	4,586
Less: inventory reserve	(3,129)	(2,537)
Inventory, net	72,965	53,434
Other current assets and prepaid expenses:
Taxes recoverable	12,135	19,808
Prepaid expenses	12,999	8,147
Prepaid insurance	6,274	3,486
Other receivables	661	3,262
Other	19,056	15,839
Other current assets and prepaid expenses	51,125	50,542
Intangible assets, net:
Less: accumulated amortization	(327,334)	(298,234)
Intangible assets, net	499,125	528,962
Accrued expenses:
Inventory received but not invoiced	49,005	13,751
Commitments and Contingencies	38,668	38,635
Employee benefits	34,086	33,671
Contract liabilities	16,570	19,196
Clinical trials	6,079	8,122
Contingent consideration	2,375	2,375
Finance leases short-term	2,435	2,743
Professional fees	4,009	1,333
Other	56,884	45,099
Accrued expenses	210,111	164,925
Other long-term liabilities:
Line of credit	51,489	44,749
Contingent consideration	7,559	7,308
Mortgages and other debts payable	4,201	3,906
Finance leases long-term	2,960	4,046
Contract liabilities	1,170	2,571
Other	24,274	25,224
Other long-term liabilities	91,653	87,804
Customer relationships
Intangible assets, net:
Intangible assets	445,144	445,408
Technologies
Intangible assets, net:
Intangible assets	296,251	296,246
Trade names
Intangible assets, net:
Intangible assets	49,771	49,786
Covenants not to compete
Intangible assets, net:
Intangible assets	16,318	16,318
Licenses
Intangible assets, net:
Intangible assets	5,766	5,766
Product registrations
Intangible assets, net:
Intangible assets	7,109	7,578
Other
Intangible assets, net:
Intangible assets	$ 6,100	$ 6,094