Balance Sheet Account Detail - Accounts Receivable, net of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 441	$ 29,873
Customer Concentration Risk | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable, net	100.00%	100.00%
McKesson Corporation and its affiliates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 9	$ 7,615
McKesson Corporation and its affiliates | Customer Concentration Risk | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable, net	2.00%	25.50%
AmerisourceBergen Corporation, and its affiliates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 0	$ 10,448
AmerisourceBergen Corporation, and its affiliates | Customer Concentration Risk | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable, net	0.00%	35.00%
Cardinal Health, Inc. and its affiliates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 0	$ 8,228
Cardinal Health, Inc. and its affiliates | Customer Concentration Risk | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable, net	0.00%	27.50%
All Other Customers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 432	$ 3,582
All Other Customers | Customer Concentration Risk | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable, net	98.00%	12.00%