NET INCOME PER SHARE (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerator for basic and diluted net income per Class A common stock and Class B common stock share:
Net income available to common shareholders used in basic and diluted income per share	$ 1,359,000	$ 773,000
Less cash dividends:
Total undistributed earnings	518,000	58,000
Total undistributed earnings - basic and diluted	518,000	58,000
Numerator for basic and diluted net income per share:
Common stock	$ 1,359,000	$ 773,000
Denominator for basic and diluted net income per Class A common stock and Class B common stock share:
Weighted average number of common shares used in basic income per share (in Shares)	5,797,889	5,724,222
Weighted average number of common shares and dilutive potential common shares used in diluted income per share (in Shares)	5,853,889	5,840,222
Common Class A [Member]
Less cash dividends:
Dividends	$ 730,000	$ 620,000
Total undistributed earnings - basic and diluted	450,000	50,000
Numerator for basic and diluted net income per share:
Common stock	$ 1,180,000	$ 670,000
Denominator for basic and diluted net income per Class A common stock and Class B common stock share:
Weighted average number of common shares used in basic income per share (in Shares)	5,035,277	4,961,610
Weighted average number of common shares and dilutive potential common shares used in diluted income per share (in Shares)	5,091,277	5,077,610
Basic net income per share:
Basic income per share (in Dollars per share)	$ 0.23	$ 0.14
Diluted net income per share:
Diluted income per share (in Dollars per share)	$ 0.23	$ 0.13
Common Class B [Member]
Less cash dividends:
Dividends	$ 111,000	$ 95,000
Total undistributed earnings - basic and diluted	68,000	8,000
Numerator for basic and diluted net income per share:
Common stock	$ 179,000	$ 103,000
Denominator for basic and diluted net income per Class A common stock and Class B common stock share:
Weighted average number of common shares used in basic income per share (in Shares)	762,612	762,612
Weighted average number of common shares and dilutive potential common shares used in diluted income per share (in Shares)	762,612	762,612
Basic net income per share:
Basic income per share (in Dollars per share)	$ 0.23	$ 0.14
Diluted net income per share:
Diluted income per share (in Dollars per share)	$ 0.23	$ 0.14