Unaudited Condensed Consolidated Balance Sheets (Parenthetical)	Mar. 31, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares
Class A Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1
Common stock, shares outstanding (in shares) | shares	5,761,856	5,616,568
Class B Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1
Common stock, shares outstanding (in shares) | shares	1,566,413	1,566,613
Common stock, convertible conversion ratio	1	1