Stockholders' Equity - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income available to common shareholders	$ 77,036	$ 41,131	$ 88,916	$ 71,211	$ 118,167	$ 160,127
Denominator:
Basic weighted average shares outstanding	108,770,204		113,099,561		108,771,077	113,864,741
Effect of dilutive securities:
Diluted weighted average shares outstanding	108,871,440		113,259,514		108,893,848	114,052,447
Basic earnings per share	$ 0.71		$ 0.79		$ 1.09	$ 1.41
Diluted earnings per share	$ 0.71		$ 0.79		$ 1.09	$ 1.4
Stock appreciation rights [Member]
Effect of dilutive securities:
Dilutive securities	67,479		96,179		68,742	110,253
Restricted stock [Member]
Effect of dilutive securities:
Dilutive securities	33,757		63,774		54,029	77,453