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Emflaza asset acquisition (Tables) | 9 Months Ended
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Sep. 30, 2017
Business Combinations [Abstract] |
Schedule of business acquisitions | The following tables present the total purchase consideration and the preliminary allocation of the purchase consideration for the Transaction as of April 20, 2017 (the “Acquisition Date”):
Cash consideration |  | $ | 75,000 |
Fair value of PTC common stock issued to Marathon (6,683,598 shares) |  | 75,190 |
Acquisition costs |  | 2,163 |
Total preliminary consideration transferred |  | $ | 152,353 |
Purchase price |  | $ | 152,353 |
Total fair value of tangible assets acquired and liabilities assumed: |  |
Inventory |  | 3,980 |
EMFLAZA rights |  | $ | 148,373 |
Future amortization expense | As of September 30, 2017, the Company recognized accumulated amortization of $10.0 million with respect to the EMFLAZA rights intangible asset. The estimated future amortization of the EMFLAZA rights intangible asset is expected to be as follows:
|  | As of September 30, 2017
2017 (1) |  | $ | 5,428 |
2018 |  | 21,713 |
2019 |  | 21,713 |
2020 |  | 21,713 |
2021 and thereafter |  | 67,854 |
Total |  | $ | 138,421 |
(1) For the three months ended December 31, 2017.

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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