Employee Benefits - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Number of consecutive years of employee's compensation	5 years
Number of total years of employee's compensation	10 years
Service cost	$ 0
Expected long-term rate of return on plan assets	2.42%	3.45%	4.80%
Accumulated benefit obligation	$ 104,100,000	$ 117,500,000
Projected benefit obligation	104,097,000	117,506,000	$ 113,679,000
Net periodic benefit cost	2,953,000	1,783,000	867,000
Amounts before tax reflected in accumulated other comprehensive income (loss)	18,029,000	19,572,000
Settlement charge	1,629,000	833,000	0
Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	2,300,000	5,600,000
Net periodic benefit cost	600,000	700,000	400,000
Amounts before tax reflected in accumulated other comprehensive income (loss)	400,000	2,400,000
Settlement charge	$ 300,000
Thrift Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions to the Thrift Plan	3.50%
Compensation expense	$ 2,400,000	$ 2,400,000	$ 2,000,000
Equities and alternatives | Minimum
Defined Benefit Plan Disclosure [Line Items]
Targeted asset allocation percentage	5.00%
Equities and alternatives | Maximum
Defined Benefit Plan Disclosure [Line Items]
Targeted asset allocation percentage	15.00%
Fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Targeted asset allocation percentage	85.00%
Fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Targeted asset allocation percentage	95.00%