Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Acquisitions - Summary of Acquisition Date Fair Value of Common Stock Transferred (Detail)

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Acquisitions - Summary of Acquisition Date Fair Value of Common Stock Transferred (Detail) - Genoptix
$ / shares in Units, $ in Thousands
Dec. 10, 2018
USD ($)
$ / shares
shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]  
Common stock issued (in shares) | shares 1,000,000
Stock price per share on closing date | $ / shares $ 13.94
Value of common stock issued as consideration $ 13,940
Issue discount due to lack of marketability (697)
Fair value of common stock at December 10, 2018 $ 13,243
Common Stock  
Business Acquisition, Equity Interests Issued or Issuable [Line Items]  
Common stock issued (in shares) | shares 1,000,000.0