Commitments and contingencies - Leases - Narrative (Details)	9 Months Ended
Sep. 30, 2019
Commitments And Contingencies - Leases - Narrative
Operating Lease, Description	In March 2019, the Company entered into a nine-month office space rental agreement for its headquarters in New York, New York expiring November 2019. The rental agreement contains a base rent of approximately $8,000 per month. In December 2011, Apricus entered into a five-year lease agreement for its original headquarters in San Diego, California expiring December 31, 2016. In December 2015, Apricus amended the lease agreement to extend the term through January 31, 2020. The Company has an option to extend the lease an additional three years. The original lease term contained a base rent of approximately $24,000 per month with 3% annual escalations, plus a supplemental real estate tax and operating expense charge to be determined annually.
Operating Sublease	In 2018, Apricus subleased excess capacity in its San Diego location to a subtenant under a non-cancellable lease. The sublease had a term of two years and aggregate payments due to Apricus of approximately $0.3 million. On October 30, 2018, Apricus amended and restated its sublease, commencing January 1, 2019, pursuant to which Apricus agreed to sublease the remainder of its San Diego location, which satisfied a closing condition related to the Merger. The amended and restated sublease has a term of one year and provides for aggregate payments due to the Company of approximately $0.4 million, which approximate fair value.

Commitments and contingencies - Leases - Narrative (Details)

9 Months Ended

Sep. 30, 2019

Commitments And Contingencies - Leases - Narrative

In March 2019, the Company entered into a nine-month office space rental agreement for its headquarters in New York, New York expiring November 2019. The rental agreement contains a base rent of approximately $8,000 per month. In December 2011, Apricus entered into a five-year lease agreement for its original headquarters in San Diego, California expiring December 31, 2016. In December 2015, Apricus amended the lease agreement to extend the term through January 31, 2020. The Company has an option to extend the lease an additional three years. The original lease term contained a base rent of approximately $24,000 per month with 3% annual escalations, plus a supplemental real estate tax and operating expense charge to be determined annually.

Operating Sublease

In 2018, Apricus subleased excess capacity in its San Diego location to a subtenant under a non-cancellable lease. The sublease had a term of two years and aggregate payments due to Apricus of approximately $0.3 million. On October 30, 2018, Apricus amended and restated its sublease, commencing January 1, 2019, pursuant to which Apricus agreed to sublease the remainder of its San Diego location, which satisfied a closing condition related to the Merger. The amended and restated sublease has a term of one year and provides for aggregate payments due to the Company of approximately $0.4 million, which approximate fair value.