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Fair value measurement - BMS warrants - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 6 Months Ended |
--- | --- | --- | ---
Feb. 01, 2019 | Jun. 30, 2019 | Apr. 06, 2015
Collaboration arrangements |  |  |
Proceeds from exercise of warrants |  | $ 500 |
BMS Warrants |  |  |
Collaboration arrangements |  |  |
Exercise price in respect of each warrant |  | $ 49.93 | $ 33.84
Number of trading days used to calculate Volume Weighted Average Price ("VWAP") |  | 20 days |
Number of days prior to purchase or exercise used to calculate Volume Weighted Average Price ("VWAP") |  | 5 days |
Compounded annual growth rate used to determine fair value of exercise price |  | 10.00% |
Increase in volatility rate |  | 10.00% |
Volatility rate |  | 82.50% |
BMS Warrants | Minimum |  |  |
Collaboration arrangements |  |  |
Period in which the exercise of warrants is expected to occur after balance sheet date (in years) |  | 2 years |
BMS Warrants | Maximum |  |  |
Collaboration arrangements |  |  |
Period in which the exercise of warrants is expected to occur after balance sheet date (in years) |  | 4 years |
uniQure N.V. | Bristol Myers Squibb | First Six New Targets Or Designation Of Sixth Target |  |  |
Collaboration arrangements |  |  |
Ownership percentage required per agreement |  | 14.90% |
uniQure N.V. | Bristol Myers Squibb | First Nine New Targets Or Designation Of Ninth Target |  |  |
Collaboration arrangements |  |  |
Ownership percentage required per agreement |  | 19.90% |
BMS arrangement | Bristol Myers Squibb | Hercules Warrants [Member] |  |  |
Collaboration arrangements |  |  |
Number of shares issued for exercise of warrants | 37,175 |  |
Issue price per share | $ 34.25 |  |
Proceeds from exercise of warrants | $ 500 |  |

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- Definition The period in which the exercise of warrants is expected to occur after balance sheet date, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Fair market of warrants, sensitivity analysis, volatility rate + References No definition available. + Details
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- Definition The compounded annual growth rate used to determine the fair value of the exercise price. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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