Share-Based Compensation Plans - Changes in Nonvested Stock Options (Detail)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
SHARES
Nonvested stock options outstanding, at beginning of the year (in shares) | shares	114,829
Granted (in shares) | shares	0
Vested (in shares) | shares	(114,829)
Forfeited or Cancelled (in shares) | shares	0
Nonvested stock options outstanding, at end of the year (in shares) | shares	0
WEIGHTED- AVERAGE GRANT-DATE FAIR VALUE PER SHARE
Nonvested stock options weighted average grant date fair value at beginning of the year (in dollars per share) | $ / shares	$ 19.18
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	19.18
Forfeited or Cancelled (in dollars per share) | $ / shares	0
Nonvested stock options weighted average grant date fair value at end of the year (in dollars per share) | $ / shares	$ 0