Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands		3 Months Ended		6 Months Ended
	May 28, 2020	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Summary of Significant Accounting Policies Details [Line Items]
Reverse stock split, conversion ratio	0.10
Cash in excess of the FDIC insured limit		$ 23,142	$ 6,275	$ 23,142	$ 6,275
Assets		90,419		90,419		$ 87,788
Company product sales
Summary of Significant Accounting Policies Details [Line Items]
Gross Company product sales		26,064	36,717	58,912	59,883
Convertible Note 2019
Summary of Significant Accounting Policies Details [Line Items]
Restricted cash							$ 2,700
Domestic
Summary of Significant Accounting Policies Details [Line Items]
Gross Company product sales		6,400	9,500	14,500	15,100
Assets		66,000	145,600	66,000	145,600
Foreign
Summary of Significant Accounting Policies Details [Line Items]
Gross Company product sales		4,000	4,100	7,500	5,900
Assets		$ 24,400	$ 44,700	$ 24,400	$ 44,700
Sales Revenue | Company product sales | Customer concentration risk
Summary of Significant Accounting Policies Details [Line Items]
Concentration risk		45.00%	27.00%		30.00%
Sales Revenue | Customer One | Company product sales | Customer concentration risk
Summary of Significant Accounting Policies Details [Line Items]
Concentration risk		34.00%		33.00%	19.00%
Sales Revenue | Customer Two | Company product sales | Customer concentration risk
Summary of Significant Accounting Policies Details [Line Items]
Concentration risk		11.00%			11.00%
Accounts Receivable | Company product sales | Customer concentration risk
Summary of Significant Accounting Policies Details [Line Items]
Concentration risk				46.00%	45.00%