Summary of Activities in Shares of Capital Stock (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Common Class A [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common stock, shares, outstanding, beginning	17,642,722	16,595,783
Exercise of stock options	50,223	27,926
Conversion of class C to class A	207	48,527
Common stock, shares, outstanding, ending	17,693,152	16,672,236
Common Class C [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common stock, shares, outstanding, beginning	2,866,565	2,679,603
Exercise of stock options
Conversion of class C to class A	(207)	(48,527)
Common stock, shares, outstanding, ending	2,866,358	2,631,076