Employee Benefits - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2004 payment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Retirement Benefits [Abstract]
Matching employer contributions under 401(k) Savings and Retirement plan		$ 7,000	$ 6,500	$ 6,100
Number of annual payments upon retirement | payment	15
Average remaining service period		7 years 6 months	8 years 6 months
Actuarial gain (loss)		$ 740	$ (1,568)	(1,207)
Estimated accumulated benefit obligation		17,935	19,746	$ 19,214	$ 18,927
Estimated accumulated benefit obligation		4,800	4,500
Funded estimated accumulated benefit obligation		4,100	4,000
Unfunded estimated accumulated benefit obligation		$ 600	$ 500