Condensed Consolidated Balance Sheets Parentheticals - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Treasury stock, Shares	244,113	244,113
Class A common stock
Common stock, Par value per share	$ 0.01	$ 0.01
Common stock, Shares authorized	150,000,000	150,000,000
Common stock, Shares issued	27,417,760	27,235,860
Common stock, Shares outstanding	27,173,647	26,991,747
Class B common stock
Common stock, Par value per share	$ 0.01	$ 0.01
Common stock, Shares authorized	50,000,000	50,000,000
Common stock, Shares issued	13,187,195	13,187,195
Common stock, Shares outstanding	13,187,195	13,187,195