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Goodwill and Other Purchased Intangible Assets Intangible Assets, Goodwill and Other (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Goodwill [Roll Forward]    
Goodwill period start $ 741,700 $ 682,500
Accumulated impairment loss period start (335,200) (335,200)
Goodwill, net period start 406,488 347,300
Goodwill, Acquired During Period 400 55,900
Goodwill, Impairment Loss 0 0
Currency fluctuations 6,700 3,300
Goodwill, Period Increase (Decrease) 7,100 59,200
Goodwill period end 748,800 741,700
Accumulated impairment loss period end (335,200) (335,200)
Goodwill, net period end 413,569 406,488
Life Science [Member]    
Goodwill [Roll Forward]    
Goodwill period start 333,300 333,300
Accumulated impairment loss period start (41,800) (41,800)
Goodwill, net period start 291,500 291,500
Goodwill, Acquired During Period 0 0
Currency fluctuations 0 0
Goodwill, Period Increase (Decrease) 0 0
Goodwill period end 333,300 333,300
Accumulated impairment loss period end (41,800) (41,800)
Goodwill, net period end 291,500 291,500
Clinical Diagnostics [Member]    
Goodwill [Roll Forward]    
Goodwill period start 408,400 349,200
Accumulated impairment loss period start (293,400) (293,400)
Goodwill, net period start 115,000 55,800
Goodwill, Acquired During Period 400 55,900
Currency fluctuations 6,700 3,300
Goodwill, Period Increase (Decrease) 7,100 59,200
Goodwill period end 415,500 408,400
Accumulated impairment loss period end (293,400) (293,400)
Goodwill, net period end $ 122,100 $ 115,000