Goodwill and Other Intangibles - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 640,222	$ 631,496
Insurance Agency Acquisition
Acquired Finite-Lived Intangible Assets [Line Items]
Other	40
Total assets acquired	6,600
Total cash paid	(13,400)
Contingent consideration	(1,926)
Other liabilities assumed	0
Total fair value of consideration	(15,326)
Goodwill	8,726
Customer list intangible | Insurance Agency Acquisition
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	6,120
Non-compete intangible | Insurance Agency Acquisition
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 440