Leases - Schedule of Lease Assets & Liabilities (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2019	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 1,201		$ 670	$ 781
Finance Lease, Right-of-Use Asset	329		260	354
Right of Use Assets	$ 1,530		$ 930	$ 1,135
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Vvus:RightOfUseAssets		Vvus:RightOfUseAssets	Vvus:RightOfUseAssets
Operating Lease, Liability, Current	$ 512		$ 548	$ 551
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Vvus:LeaseLiabilityCurrent		Vvus:LeaseLiabilityCurrent	Vvus:LeaseLiabilityCurrent
Finance Lease, Liability, Current	$ 131		$ 193	$ 216
Current portion of lease liability	643		741	767
Operating Lease, Liability, Noncurrent	$ 1,017		$ 331	$ 466
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Vvus:LeaseLiabilityNoncurrent		Vvus:LeaseLiabilityNoncurrent	Vvus:LeaseLiabilityNoncurrent
Finance Lease, Liability, Noncurrent	$ 188		$ 68	$ 136
Lease liability, net of current portion	1,205		$ 399	$ 602
Current Portion of Deferred Rent	(94)
Deferred Rent, Net of Current Portion	(234)
Cumulative effect of accounting change	10	$ 10
Accounting Standards Update 2016-02 [Member]
Lessee, Lease, Description [Line Items]
Cumulative effect of accounting change	10
Building [Member]
Lessee, Lease, Description [Line Items]
Current Portion of Deferred Rent	(94)
Deferred Rent, Net of Current Portion	$ (234)