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Acquisitions - Agilis Acquisition (Details) - USD ($) $ in Thousands |  | 4 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 23, 2018 | Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2018 | Apr. 29, 2020
Acquisitions |  |  |  |  |
Estimated fair value of deferred consideration payable |  |  | $ 0 |  |
Agilis |  |  |  |  |
Acquisitions |  |  |  |  |
Cash consideration | $ 49,221 |  |  |  |
Issuance of common stock related to acquisition (in shares) | 3,500,907 |  |  |  |
Numerator for calculation of number of shares of equity interests issued to acquire entity | $ 150,000 |  |  |  |
Trading day period | 10 days |  |  |  |
Fair value of PTC common stock issued | $ 155,860 |  |  |  |
Development milestone payment obligations |  |  | $ 40,000 |  |
Net sales amount |  |  |  |  | $ 150,000
Estimated fair value of contingent consideration payable | 290,500 |  |  |  |
Estimated fair value of deferred consideration payable | $ 38,100 |  |  |  |
Loss of acquire since acquisition date |  | $ 8,700 |  |  |
Agilis | Selling, general and administrative |  |  |  |  |
Acquisitions |  |  |  |  |
Acquisition related expenses |  |  |  | $ 1,700 |
Agilis | Minimum |  |  |  |  |
Acquisitions |  |  |  |  |
Product sales (as a percent) |  |  | 2.00% |  | 2.00%
Agilis | Maximum |  |  |  |  |
Acquisitions |  |  |  |  |
Development milestone payment obligations |  |  | $ 60,000 |  |
Priority review voucher amount |  |  | 535,000 |  |
Net sales amount |  |  | $ 150,000 |  | $ 150,000
Product sales (as a percent) |  |  | 6.00% |  | 6.00%

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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=116868678&loc=d3e1043-128460 + Details
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