Stock-based Compensation Plans - TSR - PSUs Activities (Detail) - $ / shares		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Granted, weighted average grant date fair value			$ 9.29
Performance Based TSR - PSUs
Summary of Performance Share Unit Awards outstanding, Number of Units
Outstanding, Beginning Balance		1,147,994
Granted	[1]	111,828
Vested and issued	[2]	(314,152)
Forfeited		0
Outstanding, Ending Balance		945,670
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance, weighted average grant date fair value		$ 7.60
Granted, weighted average grant date fair value	[1]	27.90
Vested and issued, weighted average grant date fair value	[2]	11.34
Forfeited, weighted average grant date fair value		0
Outstanding, Ending Balance, weighted average grant date fair value		$ 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%.