Selected Balance Sheet Information - Schedule of prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Selected Balance Sheet Information
Prepaid clinical research organizations	$ 471	$ 48
Prepaid consulting, subscriptions and other expenses	74	134
Prepaid insurances	73	549
Prepaid manufacturing expenses	39	622
Prepaid conferences, travel and other expenses	0	25
Other receivables	0	3
Total	$ 657	$ 1,381

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Sum of the amount paid in advance for clinical research organization.

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Amount paid in advance for conferences, travel and other expenses.

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Amount of Prepaid Manufacturing Expense.

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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