INCOME PER COMMON SHARE (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 1,735,206	$ 1,703,271	$ 1,501,023	$ 1,521,131	$ 1,773,529	$ 2,014,791	$ 1,840,847	$ 1,689,264	$ 6,460,631	$ 7,318,433	$ 6,922,934
Weighted average shares outstanding									5,526,948	5,522,025	5,500,027
Effect of dilutive shares									151,595	66,065	88,985
Weighted average shares outstanding - diluted									5,678,543	5,588,090	5,589,012
Earnings per share - basic (in dollars per share)	$ 0.31	$ 0.31	$ 0.27	$ 0.28	$ 0.33	$ 0.36	$ 0.33	$ 0.31	$ 1.17	$ 1.33	$ 1.26
Earnings per share - diluted (in dollars per share)	$ 0.31	$ 0.3	$ 0.26	$ 0.27	$ 0.32	$ 0.36	$ 0.33	$ 0.30	$ 1.14	$ 1.31	$ 1.24