Stock-based Compensation Plans - TSR - PSUs Activities (Detail) - Performance Based TSR - PSUs	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Summary of Performance Share Unit Awards outstanding, Number of Units
Outstanding, Beginning Balance | shares	1,147,994
Granted | shares	111,828	[1]
Vested and issued | shares	(314,152)	[2]
Forfeited | shares	0
Outstanding, Ending Balance | shares	945,670
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares	$ 7.60
Granted, weighted average grant date fair value | $ / shares	27.90	[1]
Vested and issued, weighted average grant date fair value | $ / shares	11.34	[2]
Forfeited, weighted average grant date fair value | $ / shares	0
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares	$ 8.76

[1] These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

[2] Includes TSR-PSUs awards granted in 2019 where the return on our common stock was 127% and therefore, the performance multiple and actual payout was 183%.