Benefit Plans - Additional Information (Detail)				12 Months Ended
	Jul. 30, 2021	Dec. 31, 2006	Dec. 31, 2002	Dec. 31, 2022 USD ($) retirement_payment $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Apr. 25, 2019 shares
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan age attained for coverage				21 years
Service period for employees of coverage age, years				1 year
Vesting percentage of participants in pension plan				100.00%
Expected future employer contributions next year				$ 0
Requisite service period for deferred compensation arrangement		10 years	10 years	10 years
Discount rate				5.10%
Increase in other comprehensive income from retirement plans				$ 11,000	$ 689	$ 6,334
Retirement plan for the board of directors to get maximum payments minimum age				72 years
Number of quarterly payments made to Board of Directors from Retirement Plan | retirement_payment				40
Benefit plans compensation expense				$ 1,250
Period in which undistributed balance of accrued benefit will be distributed				60 days
Shares purchased under ESOP | shares				4,769,464
Average price per share purchased under ESOP (in dollars per share) | $ / shares				$ 17.09
Outstanding loan principal				$ 13,200,000
Number of shares released under ESOP | shares				299,566	285,107
Unallocated ESOP shares held in suspense | shares				598,507
Fair market value of ESOP shares				$ 12,800,000
ESOP compensation expenses				4,100,000	$ 4,300,000	2,400,000
Estimated expense under the supplemental ESOP provision				$ 144,000	180,000	180,000
Number of shares authorized for issuance under stock award plan | shares							1,350,000
Number of shares remain available for grant under stock award plan | shares				1,047,756
Unrecognized compensation cost relating go unvested restricted stock				$ 9,100,000
Weighted average period in which unrecognized compensation cost recognized years				1 year 8 months 12 days
Fair value of options vesting				$ 195,000	$ 190,000	$ 185,000
Projected share based compensation expense, 2022				144,000
Projected share based compensation expense, 2023				77,000
Projected share based compensation expense, 2024				11,000
Aggregate intrinsic value of stock options outstanding				1,200,000
Aggregate intrinsic value of stock options exercisable				$ 1,200,000
Weighted average fair value of options granted (in dollars per share) | $ / shares				$ 5.8	$ 3.52	$ 1.83
Revolving Credit Facility | Credit Agreement, Maturing November 15, 2023
Defined Benefit Plan Disclosure [Line Items]
Line of credit facility, extension period	3 years
Restricted Stock
Defined Benefit Plan Disclosure [Line Items]
Share based payment award vesting period in years				3 years
Outstanding Stock Awards
Defined Benefit Plan Disclosure [Line Items]
Share based payment award compensation expense				$ 9,400,000	$ 5,500,000	$ 5,400,000
Stock Options
Defined Benefit Plan Disclosure [Line Items]
Share based payment award vesting period in years				5 years
Share based payment award compensation expense				$ 198,000	200,000	190,000
Share based payment award expiration period in years				10 years
Performance Shares
Defined Benefit Plan Disclosure [Line Items]
Share based payment award vesting period in years				3 years
Board of Directors
Defined Benefit Plan Disclosure [Line Items]
Benefit plans compensation expense				$ 5,000	6,250	10,000
Other Liabilities
Defined Benefit Plan Disclosure [Line Items]
Retirement plan liabilities				1,700,000	1,800,000
Other Liabilities | Board of Directors
Defined Benefit Plan Disclosure [Line Items]
Retirement plan liabilities				125,000	123,000
Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Aggregate contributions to the benefit plan				73,000	74,000	80,000
Increase in other comprehensive income from retirement plans				$ 283,000	$ 68,000	$ 89,000
401(k) Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of matching contribution				25.00%	25.00%	25.00%
Percentage of contribution made by the participants in benefit plans				6.00%	6.00%	6.00%
Aggregate contributions to the benefit plan				$ 1,200,000	$ 1,200,000	$ 1,000,000
Estimated expense of supplemental ESOP provision				312,000	25,000	25,000
Pension
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, funded (unfunded) status of plan				$ 23,380,000	$ 25,934,000	$ 19,447,000
Discount rate				5.10%	2.70%	2.30%
Post-retirement
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, funded (unfunded) status of plan				$ (12,095,000)	$ (16,748,000)	$ (18,805,000)
Discount rate				5.10%	2.70%	2.30%