Earnings Per Share and Equity - Calculations of Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share Reconciliation [Abstract]
Net income	$ 8,022	$ 36,279	$ 32,366	$ 82,025
Preferred stock dividends	198	198	594	594
Net income applicable to common stockholders	$ 7,824	$ 36,081	$ 31,772	$ 81,431
Weighted average common shares outstanding
Shares used in calculating basic earnings per share	45,776	54,153	46,637	54,491
Stock option	0	502	131	477
Series C Preferred	16,500	16,500	16,500	16,500
Shares used in calculating diluted earnings per share	62,276	71,155	63,268	71,468
Earnings allocated to common stockholders per common share
Basic	$ 0.17	$ 0.67	$ 0.68	$ 1.49
Diluted	$ 0.13	$ 0.51	$ 0.5	$ 1.14