Pension and Other Post Retirement Benefit Plans - Narrative (Details) - USD ($)		12 Months Ended
	Mar. 01, 2005	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Percentage of employees covered by plan		10.00%
Minimum participant attained age	55 years
Requisite service period (at least)	10 years
Decrease in funded status		$ 12,600,000
Accumulated other comprehensive loss, net of tax		$ 7,600,000
Decrease in discount rate		0.40%
Discount rate		2.70%	2.30%	3.20%
Increase in liability		$ 3,000,000
Liability reduction for mortality table updates		300,000
Actual return on plan assets		10,786,000	$ 7,925,000
Increase from expected return		6,500,000
Accumulated benefit obligation		74,300,000	80,800,000
Net periodic pension benefit cost		(2,094,000)	(1,419,000)	$ (909,000)
Minimum required contribution in next fiscal year		$ 0
Requisite service period		1000 hours
Employer percentage contribution		2.00%
Vesting period		5 years
Expense recognized in the period		$ 5,200,000	5,100,000	4,600,000
Fair value of plan assets		94,588,000	88,512,000	85,121,000
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		91,979,000	85,007,000
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 2,609,000	3,505,000
MBT
Defined Benefit Plan Disclosure [Line Items]
Requisite service period (at least)		5 years
Defined benefit plan, benefit obligation		$ 3,200,000
Post retirement plan expense		$ 62,000	$ 126,000
Contribution for first 3%
Defined Benefit Plan Disclosure [Line Items]
Amount of discretionary contributions made by employer to defined contribution plan, percent		100.00%
Maximum annual contribution percentage per employee		3.00%
Contribution after first 3%
Defined Benefit Plan Disclosure [Line Items]
Amount of discretionary contributions made by employer to defined contribution plan, percent		50.00%
Maximum annual contribution percentage per employee		3.00%
Minimum | MBT
Defined Benefit Plan Disclosure [Line Items]
Age of plan participants		55 years
Minimum | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities		40 days	15 days
Maximum | MBT
Defined Benefit Plan Disclosure [Line Items]
Age of plan participants		65 years
Maximum | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities		7 years 8 months 12 days	6 years 8 months 12 days
Weighted Average | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Maturities of debt securities		3 years 6 months	3 years 8 months 12 days
Non-qualified plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension benefit cost		$ 117,000	$ 165,000	$ 192,000