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Nature of Business, Basis of Presentation and Liquidity - Liquidity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Liquidity
Cash and cash equivalents	$ 114,916	$ 52,071
Accumulated deficit	263,572	222,985
Net loss	$ 40,587	$ 27,514

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