Commitments and Contingencies - Narrative (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) lease	Sep. 30, 2019 USD ($)	Sep. 01, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 01, 2019 USD ($)	Jan. 01, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Non-cash lease expense	$ 267		$ 52	$ 915	$ 153
Operating lease - right of use asset, net	1,665			1,665				$ 3,117
Operating lease liability	1,796			$ 1,796
Number of leases exited | lease				4
Disposal of ROU assets and operating lease liability		$ 214
Revenue	3,266		$ 2,370	$ 11,410	$ 7,403
Professional and other services | Major customer
Lessee, Lease, Description [Line Items]
Revenue				$ 1,000
Concentration risk percentage				9.00%
Los Angeles Warehouse Lease
Lessee, Lease, Description [Line Items]
ROU disposal							$ 317
Lease liability disposal							$ 333
Atlanta Lease
Lessee, Lease, Description [Line Items]
ROU disposal	18			$ 18
Lease liability disposal	21			$ 21
Contract termination fee	10
New York
Lessee, Lease, Description [Line Items]
Number of leases exited | lease				1
London
Lessee, Lease, Description [Line Items]
Number of leases exited | lease				1
Altlanta
Lessee, Lease, Description [Line Items]
Number of leases exited | lease				1
Los Angeles
Lessee, Lease, Description [Line Items]
Term of contract						18 months
Operating lease - right of use asset, net						$ 116
Operating lease liability						$ 116
Number of leases entered | lease				1
Number of leases exited | lease				1
Calculation error | Adjustment
Lessee, Lease, Description [Line Items]
Operating lease - right of use asset, net	195			$ 195
Operating lease liability	$ 195			$ 195
Accounting standards update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease - right of use asset, net									$ 3,376	$ 99
Operating lease liability									$ 3,578	$ 111
Incremental borrowing rate									6.00%	7.75%
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year			1 year
Renewal term	12 months			12 months
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	4 years			4 years
Renewal term	5 years			5 years