Reconciliations of Equity - Reconciliations of Total Equity (Parenthetical) (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Number of shares of common stock issued under incentive compensation plan	25,981	1,514
Number of common stock shares purchased		98,206
Common stock	$ 0.365	$ 0.335
Common Stock [Member]
Number of shares of common stock issued under incentive compensation plan	25,981	1,514
Additional Paid-in Capital [Member]
Number of shares of common stock issued under incentive compensation plan	25,981	1,514
Common Treasury Stock [Member]
Number of common stock shares purchased		98,206
Retained Earnings [Member]
Common stock	$ 0.365	$ 0.335