Stockholders' Equity - Additional Information - Employee Stock Purchase Plan (Detail) - USD ($)					12 Months Ended
	Nov. 15, 2021	May 14, 2021	Nov. 14, 2020	May 14, 2020	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Stockholders Equity [Line Items]
Employee stock purchase plan expense					$ 53,755	$ 36,480
Stock issued for employee stock purchase plans options, shares	25,042	22,937	32,192	30,206	47,979	62,398
Shares issued for employee stock purchase plans options	$ 69,818	$ 38,988	$ 33,109	$ 30,040	$ 108,806	$ 63,149