Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Acquisitions - Additional Information (Detail)

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Acquisitions - Additional Information (Detail) - Genoptix - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 10, 2018
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2019
Business Acquisition [Line Items]        
Cash consideration paid $ 127,000      
Payment for working capital adjustment $ 2,000   $ 2,400 $ 2,400
Common stock issued (in shares) 1,000,000      
Payment for working capital adjustment, cash portion   $ 400   400
Identifiable intangible assets $ 71,792     $ 68,329
Acquired receivable 16,600      
Fair value adjustment 1,500      
Customer Relationships        
Business Acquisition [Line Items]        
Identifiable intangible assets $ 54,200      
Intangible assets, useful life 15 years      
Trade Names        
Business Acquisition [Line Items]        
Identifiable intangible assets $ 700      
Intangible assets, useful life 1 year      
Common Stock        
Business Acquisition [Line Items]        
Common stock issued (in shares) 1,000,000.0      
Trademarks        
Business Acquisition [Line Items]        
Identifiable intangible assets $ 13,400