Schedule of Activity of Stock Option Plans (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023		Jun. 30, 2022
Common Class A [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, outstanding, beginning	976,605		1,024,351
Weighted average exercise price, outstanding, beginning	$ 4.56	[1]	$ 4.38	[2]
Number of Shares, adjustment for effect of stock dividends	38,266		47,780
Number of shares, granted	16,000		4,000
Number of shares, exercised	(214,989)		(71,330)
Number of shares, cancelled			(1,591)
Number of shares, outstanding, ending	815,882		1,003,210
Weighted average exercise price, outstanding, ending	$ 4.75	[1]	$ 4.58	[2]
Number of shares, options exercisable	764,632		955,460
Weighted average exercise price, options exercisable	$ 4.64	[1]	$ 4.40	[2]
Number of shares, available options for future grant	171,386		239,795
Weighted average contractual term of options outstanding	4 years 10 months 13 days		4 years 3 months 25 days
Weighted average contractual term of options exercisable	4 years 6 months 21 days		4 years 21 days
Aggregated intrinsic value of options outstanding	$ 3,018,675	[3]	$ 3,891,873	[4]
Aggregated intrinsic value of options exercisable	$ 2,910,455	[3]	$ 3,878,980	[4]
Common Class C [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, outstanding, beginning	1,157,203		821,146
Weighted average exercise price, outstanding, beginning	$ 5.31	[1]	$ 5.26	[2]
Number of Shares, adjustment for effect of stock dividends	57,859		41,057
Number of shares, granted
Number of shares, exercised
Number of shares, cancelled
Number of shares, outstanding, ending	1,215,062		862,203
Weighted average exercise price, outstanding, ending	$ 5.31	[1]	$ 5.26	[2]
Number of shares, options exercisable	1,067,562		747,203
Weighted average exercise price, options exercisable	$ 5.18	[1]	$ 4.78	[2]
Number of shares, available options for future grant	834,750		17,523
Weighted average contractual term of options outstanding	6 years 4 months 28 days		6 years 9 months
Weighted average contractual term of options exercisable	6 years 1 month 20 days		6 years 6 months
Aggregated intrinsic value of options outstanding	$ 3,815,225	[3]	$ 2,758,643	[4]
Aggregated intrinsic value of options exercisable	$ 3,487,200	[3]	$ 2,748,093	[4]

[1] Adjusted for the effect of annual stock dividends.

[2] Adjusted for the effect of annual stock dividends.

[3] The Company used a stock price of $8.45 as of June 30, 2023 to derive intrinsic value.

[4] The Company used a stock price of $8.46 as of June 30, 2022, which was the closing price of the Company’s Class A shares on Nasdaq for that day, to derive intrinsic value.