Pension and Retirement Plans - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent						10.00%
Transfers between fair value levels	$ 0	$ 0
Minimum | Domestic Large Cap Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	30.00%
Minimum | Domestic Small/Mid Cap Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	5.00%
Minimum | International Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	0.00%
Minimum | Cash and Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	20.00%
Maximum | Domestic Large Cap Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	60.00%
Maximum | Domestic Small/Mid Cap Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	20.00%
Maximum | International Equities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	20.00%
Maximum | Cash and Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentages	60.00%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, description	The Company has a noncontributory, defined benefit pension plan (“Pension Plan”) covering substantially all employees hired before May 2, 2011. The Company also provides supplemental retirement benefits to certain current and former executive officers of the Company under the terms of Supplemental Executive Retirement Agreements (“Supplemental Retirement Plan”).
Postretirement Medical Coverage
Defined Benefit Plan Disclosure [Line Items]
Employee eligibility age under the plan					65 years
Profit Sharing Plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, maximum employee contribution, percent				100.00%
Defined contribution plan, employer matching contribution, percent				4.00%
Profit Sharing Plan | 401(k)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, maximum employee contribution, percent				100.00%
Profit Sharing Plan | Maximum | 401(k)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent				4.00%
Employee Stock Ownership Plan (ESOP)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, minimum number of hours of service per year required for eligibility	1000 hours
Defined contribution plan, minimum service period required for eligibility	12 months
Employee Stock Ownership Plan (ESOP) | Minimum
Defined Benefit Plan Disclosure [Line Items]
Employee eligibility age under the plan	21 years
Profit Sharing and ESOP Plans
Defined Benefit Plan Disclosure [Line Items]
Contribution expense related to plans	$ 4,000,000.0	3,600,000	$ 2,800,000
Defined Contribution SERP Plan (“DC SERP”)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent	10.00%
Contribution expense related to plans	$ 201,000	$ 209,000	$ 167,000