Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		$ 285,742	$ 279,590
Accumulated Amortization		153,553	149,001
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		225,783	225,631
Accumulated Amortization		112,836	109,216
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		30,359	30,359
Accumulated Amortization		21,082	20,861
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		9,440	9,440
Accumulated Amortization		7,434	7,158
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		8,615	8,615
Accumulated Amortization		7,612	7,389
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		5,545	5,545
Accumulated Amortization		4,489	4,377
Estimated Torreya Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	[1]	6,000	0
Accumulated Amortization	[1]	$ 100	$ 0

[1] See discussion regarding the allocation of the estimated goodwill and intangibles recorded for the Torreya acquisition