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10. Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 545,138	$ 534,141	$ 1,672,568	$ 1,538,858
Income before income taxes	350,131	30,588	1,553,906	51,855
Life Science [Member]
Segment Reporting Information [Line Items]
Net sales	206,600	192,700	622,200	546,500
Income before income taxes	10,200	5,300	25,700	(36,400)
Clinical Diagnostics [Member]
Segment Reporting Information [Line Items]
Net sales	334,000	338,000	1,038,800	982,300
Income before income taxes	22,400	30,300	86,800	90,400
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net sales	4,500	3,400	11,600	10,100
Income before income taxes	$ 100	$ 200	$ 100	$ 600

X

- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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