For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)			3 Months Ended
	Aug. 24, 2020 $ / shares	Aug. 20, 2020 $ / shares	Jun. 30, 2021 $ / shares	Jun. 30, 2020 $ / shares	Dec. 31, 2020 $ / shares
Summary Of Significant Accounting Policies [Line Items]
Reverse stock split ratio	0.8741	1.14396
Common stock, par value	$ 0.001	$ 0.001	$ 0.001	$ 5.50	$ 0.001
Customer Concentration Risk \| Sales Revenue
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage			90.00%	90.00%