Earnings per Share - Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Computation of basic earnings per share [Abstract]
Net Income for Basic Earnings Per Share		$ 18,679	$ 8,874
Basic Weighted Average Shares Outstanding (in shares)		17,414,694	17,208,174
Basic Earnings per Share (in dollars per share)		$ 1.07	$ 0.52
Common Class A
Computation of basic earnings per share [Abstract]
Net Income for Basic Earnings Per Share		$ 18,657	$ 8,868
Basic Weighted Average Shares Outstanding (in shares)		17,394,327	17,196,939
Participating Shares of Restricted Class A Common Stock
Computation of basic earnings per share [Abstract]
Net Income for Basic Earnings Per Share		$ 22	$ 6
Basic Weighted Average Shares Outstanding (in shares)	[1]	20,367	11,235

[1] Certain unvested shares of Class A common stock granted to employees have nonforfeitable rights to dividends and therefore participate fully in the results of the Company from the date they are granted. They are included in the computation of basic earnings per share using the two-class method for participating securities.