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3. Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Goodwill [Line Items] |  |
Goodwill | $ 680,900 | $ 682,500
Accumulated impairment loss | (335,200) | (335,200)
Goodwill, net | 345,728 | 347,343
Goodwill, Other Increase (Decrease) | (1,600) |
Clinical Diagnostics [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 349,200 | 349,200
Accumulated impairment loss | (293,400) | (293,400)
Goodwill, net | 55,800 | 55,800
Goodwill, Other Increase (Decrease) | 0 |
Life Science [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 331,700 | 333,300
Accumulated impairment loss | (41,800) | (41,800)
Goodwill, net | 289,900 | $ 291,500
Goodwill, Other Increase (Decrease) | $ (1,600) |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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