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Prepaid Expenses and Other Current Assets	12 Months Ended
Prepaid Expenses and Other Current Assets	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid Expenses and Other Current Assets As of December 31, 2021, the Company had approximately $3.0 million recorded as prepaid expenses and other current assets. Of this amount approximately $1.0 million was for prepaid directors and officers insurance and $2.0 million was for other prepaid insurance, rent, software services, other general prepaid items, and other current assets. As of December 31, 2020, the Company had approximately $1.9 million recorded as prepaid expenses and other current assets. Of this amount approximately $0.9 million was for prepaid directors and officers insurance and the remaining $1.0 million was for other prepaid insurance, rent, software services, and other general prepaid items. Other Non-Current AssetsAs of December 31, 2021, the Company had non-current prepaid expenses of approximately $0.2 million related to deposits. As of December 31, 2020, the Company had non-current prepaid expenses of approximately $1.1 million. The Company's non-current prepaid expenses are for advance research and development payments which will be used for projects that have estimated completion dates greater than one year.