SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of earnings per share basic and Diluted (Detail) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator
Net income	$ 1,642,007	$ 1,400,897	$ 1,438,724	$ 3,006,307	$ 3,042,904	$ 4,445,031
Denominator
Weighted average shares outstanding - basic	13,662,222		13,945,423		13,760,002	13,528,822
Effect of stock options	39,452				40,166
Weighted average shares outstanding diluted	13,701,674		13,945,423		13,800,168	13,528,822
Earnings per common share:
Basic	$ 0.12		$ 0.10		$ 0.22	$ 0.33
Diluted	$ 0.12		$ 0.10		$ 0.22	$ 0.33