Pension Plans - Qualified Plan - General Information (Details) - Pension Plan [Member] - Qualified Plan [Member]	12 Months Ended
	Dec. 31, 2021 age
Defined Benefit Plan Disclosure [Line Items]
Rate of qualified earnings credited to the account of the participant of benefit plan	3.00%
Retirement age benefit payable to a terminated vested participant upon retirement	65
Retirement age for benefit payments, earliest age allowed contingent of minimum service requirement	55
Number of years of service at the time plan was frozen for the eligibility of benefit payable to terminated vested participant at age 55	15 years
Defined benefit plan, funding status	us-gaap:UnderfundedPlanMember