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Summary of Stock-Based Compensation Recognized (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2021 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares of common stock issued to certain board members in lieu of cash compensation	10,149

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- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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