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Acquisitions - Narrative (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Jun. 18, 2021 | Apr. 07, 2021 | Apr. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021 | May 31, 2020 | May 22, 2020
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash paid at closing |  |  |  |  | $ 419,404,000 | $ 37,000,000 | $ 0 |  |  |
Common stock, par value (in dollars per share) |  |  |  |  | $ 0.001 | $ 0.001 |  |  |  |
Gain on investment in and loan receivable from non-consolidated affiliate, net |  |  |  |  | $ 109,260,000 | $ 3,955,000 | 0 |  |  |
Goodwill |  |  |  |  | 527,115,000 | 211,083,000 |  |  |  |
Clinical Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 462,603,000 | 179,534,000 |  |  |  |
Pharma Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 64,512,000 | 31,549,000 |  |  |  |
Affiliated Entity |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amount outstanding under line of credit |  | $ 10,300,000 |  |  |  |  |  |  |  |
Variable Interest Entity, Not Primary Beneficiary | Affiliated Entity |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Investment in minority interest |  | 29,600,000 |  |  |  |  |  | $ 29,600,000 | $ 25,000,000 | $ 25,000,000
Consideration paid to other shareholders |  | 390,000,000 |  |  |  |  |  |  |  |
Identifiable intangible assets - developed technology | Maximum |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization period |  |  |  |  | 15 years |  |  |  |  |
Marketing Assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization period |  |  |  |  | 4 years |  |  |  |  |
Trademarks |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization period |  |  |  |  | 15 years |  |  |  |  |
Trade Name |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization period |  |  |  |  | 5 years |  |  |  |  |
Trapelo Health |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Voting interests acquired (as a percent) |  |  | 100.00% |  |  |  |  |  |  |
Cash paid at closing |  |  | $ 35,591,000 |  |  |  |  |  |  |
Payments to acquire business, adjustments |  |  | 600,000 |  |  |  |  |  |  |
Common stock issued for consideration |  |  | $ 29,174,000 |  |  |  |  |  |  |
Common stock issued (in shares) |  |  | 597,712 | 597,712 |  |  |  |  |  |
Share price (in dollars per share) |  |  | $ 48.81 |  |  |  |  |  |  |
Amortization period |  |  | 9 years 9 months 18 days |  |  |  |  |  |  |
Goodwill, expected tax deductible amount |  |  | $ 0 |  |  |  |  |  |  |
Acquisition and integration costs |  |  |  |  | $ 1,800,000 | 0 | 0 |  |  |
Goodwill |  |  | $ 44,664,000 |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 44,664,000 |  |  |  |  |
Trapelo Health | Clinical Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 44,664,000 |  |  |  |  |
Trapelo Health | Pharma Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 0 |  |  |  |  |
Trapelo Health | Identifiable intangible assets - developed technology |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  |  | 10 years |  |  |  |  |  |  |
Trapelo Health | Marketing Assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  |  | 4 years |  |  |  |  |  |  |
Inivata |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash paid at closing |  | 398,594,000 |  |  |  |  |  |  |  |
Payments to acquire business, adjustments |  | $ 8,600,000 |  |  |  |  |  |  |  |
Amortization period |  | 14 years 10 months 24 days |  |  |  |  |  |  |  |
Goodwill, expected tax deductible amount |  | $ 0 |  |  |  |  |  |  |  |
Acquisition and integration costs |  |  |  |  | (13,900,000) | 0 | $ 0 |  |  |
Lin of credit settled as consideration for acquisition |  | 15,000,000 |  |  |  |  |  |  |  |
Fair value of previously-held equity interest | $ 64,900,000 | 64,906,000 |  |  |  |  |  |  |  |
Fair value of Purchase Option | $ 74,300,000 | 74,300,000 |  |  |  |  |  |  |  |
Gain on investment in and loan receivable from non-consolidated affiliate, net |  |  |  |  | 109,300,000 | $ 4,000,000 |  |  |  |
Measurement period adjustments, net assets acquired |  | 17,750,000 |  |  | 17,800,000 |  |  |  |  |
Goodwill |  | 271,368,000 |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 271,368,000 |  |  |  |  |
Deferred income tax liabilities |  | $ (60,994,000) |  |  |  |  |  |  |  |
Revenue from acquiree |  |  |  |  | 1,500,000 |  |  |  |  |
Net loss from acquiree |  |  |  |  | 27,600,000 |  |  |  |  |
Acquisition related costs |  |  |  |  | 11,000,000 |  |  |  |  |
Inivata | Clinical Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 238,405,000 |  |  |  |  |
Inivata | Pharma Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | $ 32,963,000 |  |  |  |  |
Inivata | Identifiable intangible assets - developed technology | Maximum |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  | 15 years |  |  |  |  |  |  |  |
Inivata | Trademarks | Maximum |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  | 15 years |  |  |  |  |  |  |  |
Inivata | Trade Name |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  | 5 years |  |  |  |  |  |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
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- Definition Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 + Details
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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 4A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=SL65897772-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest). + References No definition available. + Details
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