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Accounts Payable and Accrued Expenses (Schedule of Accounts Payable and Accrued Expenses) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts Payable and Accrued Expenses
Accounts payable	$ 4,629	$ 3,518
Research and development	2,801	2,862
Accrued compensation	2,006	2,009
Other	398	358
Total accounts payable and accrued expenses	$ 9,834	$ 8,747

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for accrued compensation.

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Carrying value as of the balance sheet date of obligations incurred and payable for research and development.

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Name Accounting Standards Codification
-Topic 210
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