Employee Benefit Plans (Additional Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Contribution match, as a percentage of annual pay	4.00%
Contribution matches, percentage of pre-tax compensation	3.00%	3.00%	3.00%
Expenses under the 401(K)/Profit Sharing plan	$ 2,900	$ 2,400	$ 2,300
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum guaranteed benefit term	15 years
Accumulated benefit obligation	$ 15,700	$ 14,200
Expected amortization of net actuarial loss	778
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected amortization of net actuarial loss	116
Expected amortization of prior service cost	$ 24