Leases - Future Payment of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (rest of year) Operating Lease	$ 454
2021 (Operating Lease)	482
Total lease payments - Operating Lease	936
Less imputed interest - Operating Lease	(57)
Operating Lease Liabilities	$ 879
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Vvus:LeaseLiabilityCurrent vvus:LeaseLiabilityNoncurrent
Finance Lease, Liability, Payment, Due [Abstract]
2020 (rest of year) Finance Lease	$ 158
2021 (Finance Lease)	101
2022 (Finance Lease)	7
Total lease payments - Finance Lease	266
Less imputed interest - Finance Lease	(5)
Finance Lease Liability	$ 261