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Licensing and Other Arrangements - Janssen Biotech (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Licensing and other arrangements |  |  |  |  |
Revenue from contracts with customers |  |  |  | $ 17,276 | $ 5,068
Janssen Biotech Inc. | License Agreement |  |  |  |  |
Licensing and other arrangements |  |  |  |  |
Cash payment received | $ 2,500 |  |  |  |
Maximum amount receivable milestone payments upon achievement of certain clinical development and regulatory approval events | $ 3,000 |  |  |  |
Percentage of royalty on worldwide net sales of each product upon commercialization | 0.75% |  |  |  |
Revenue from contracts with customers |  | $ 2,500 | $ 800 | 2,500 |
Contract assets |  |  |  | 0 |
Contract liabilities |  |  |  | 0 |
Capitalized contract costs |  |  |  | $ 0 |

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130533-203044 + Details
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