Net Income (Loss) per Share - Computation of Basic and Diluted Net Income (Loss) per Share Attributable to Common Stockholders (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income (loss) applicable to common stockholders	$ 1,150,231	$ 699,306	$ (1,034,078)	$ 1,846,046
Denominator:
Weighted average common shares outstanding, basic	19,278,730	18,823,273	19,261,775	18,665,010
Effect of dilutive common shares	2,070,091	1,677,351		1,379,650
Weighted average common shares outstanding, diluted	21,348,821	20,500,624	19,261,775	20,044,660
Net income (loss) per share:
Basic	$ 0.06	$ 0.04	$ (0.05)	$ 0.10
Diluted	$ 0.05	$ 0.03	$ (0.05)	$ 0.09
Anti-dilutive securities excluded from diluted net income (loss) per share:
Anti-dilutive securities excluded from diluted net income (loss) per share	638,157	436,018	375,657	484,081
Stock options [Member]
Anti-dilutive securities excluded from diluted net income (loss) per share:
Anti-dilutive securities excluded from diluted net income (loss) per share	638,157	436,018	375,657	484,081