Employee Benefit Plans - Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
SERP
Defined Benefit Plan Disclosure [Line Items]
Other liabilities	$ (5,982)	$ (5,638)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other assets	$ 3,417	$ 2,232