Earnings Per Share (Calculation Of Net Income (Loss) Available To Common Stockholders Before Being Allocable Between Class A And Class B Common Shares) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net income	$ 5,558	$ 6,593	$ 15,707	$ 15,427
Less: Preferred stock dividends		542		2,077
Less: Exchange and redemption of preferred shares		89,585		89,585
Net income (loss) available to common stockholders	$ 5,558	$ (83,534)	$ 15,707	$ (76,235)