Organization and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 14, 2022 $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Segment $ / shares shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
State of incorporation				DE
Date of incorporation				Mar. 09, 2010
Number of operating segments | Segment				1
Cash and cash equivalents		$ 41,789		$ 41,789		$ 59,537
Accumulated deficit		495,878		495,878		491,326
Loss from continuing operations		$ (9,077)	$ (14,311)	(22,912)	$ (34,706)	(115,100)
Cash used in operations				$ (27,274)	$ (33,123)	$ (66,300)
Common stock, shares outstanding | shares		4,865,000		4,865,000		3,857,000
Common stock, par value | $ / shares	$ 0.0001	$ 0.0001		$ 0.0001		$ 0.0001
Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Reverse stock split of common stock				On that date, every 20 issued and outstanding shares of the Company's common stock automatically converted into one outstanding share of common stock.
Reverse stock split of common stock ratio	20
Common stock, shares outstanding | shares	97,300,826
Number of shares reverse stock splits | shares	4,865,036