Common Stock and Treasury Stock - Information Relating to the Number of Shares of Our Common Stock Issued (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2021 shares
Class A Common Stock
Common Stock [Line Items]
Balance, shares	6,785
Conversion of shares	12
Issuance of restricted stock	38
Balance, shares	6,835
Class B Common Stock
Common Stock [Line Items]
Balance, shares	938
Conversion of shares	(12)
Issuance of restricted stock	39
Balance, shares	965