Balance Sheet Disclosures- Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 13,593
Trademarks (indefinite life)	74	$ 71
Total intangible assets	13,667	15,092
Patent
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	1,393	1,245
Less accumulated amortization	(475)	(411)
Finite-lived intangible assets, net	918	834
Purchased Technology
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	16,900	16,900
Less accumulated amortization	(4,225)	(2,817)
Finite-lived intangible assets, net	$ 12,675	14,083
Purchase Option
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		121
Less accumulated amortization		(17)
Finite-lived intangible assets, net		$ 104