Commitment and Contingencies (California Employment Claim and Canwell and Lease Dispute) (Details) ft² in Thousands, $ in Thousands		1 Months Ended	3 Months Ended	9 Months Ended
	Nov. 24, 2020 USD ($) payment	Nov. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) proceeding	Sep. 30, 2020 USD ($) proceeding	Dec. 31, 2019 ft² lease	Feb. 08, 2019 proceeding
Loss Contingencies [Line Items]
Number of leases | lease					3
Term of lease					5 years
Lease area | ft²					70
Subsequent Event
Loss Contingencies [Line Items]
Lease settlement, number of payments | payment	6
Lease settlement	$ 6,336
Payments for legal settlements		$ 1,000
Canwell Dispute
Loss Contingencies [Line Items]
Number of proceedings | proceeding			5	5
Accrued loss contingency loss			$ 7,750	$ 7,750
California Employment Claim
Loss Contingencies [Line Items]
Number of proceedings | proceeding						6