Employee Benefit Plans - SERP (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Unrealized gain/loss due to change in fair value of SERP liabilities	$ 2,890,000	$ (5,727,000)	$ 5,030,000
Proceeds from Life Insurance Policy		1,566,000	507,000
Cash contribution	6,000,000.0
Non-qualified Supplemental Retirement Plan ("SERP")
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31,738,000	32,039,000
Trading gains (losses), net	2,624,000	2,620,000	(5,524,000)
Life Insurance, Corporate or Bank Owned, Change in Value		891,000
Variable life insurance policies investment amount	60,700,000	58,000,000.0
Retirement Income Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	0	4,450,000
Fair value of plan assets	35,339,000	39,068,000	40,142,000
SERP Liabilities	$ 41,038,000	$ 41,120,000	$ 48,519,000