Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 64,005	$ 59,715
Non-interest income	99,353	70,766
Ametros' Customers
Disaggregation of Revenue [Line Items]
Contract With Customer, Accounts Receivable	2,300
Contract With Customer, Deferred Revenue	20,800
Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	42,589	45,436
Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,622	4,427
Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,924	6,587
Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	9,870	3,265
Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	35,348
Non-interest income		11,051
Operating Segments | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	12,642	11,430
Non-interest income	34,280	33,720
Operating Segments | Commercial Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,842	4,236
Operating Segments | Commercial Banking | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,622	4,427
Operating Segments | Commercial Banking | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,178	2,767
Operating Segments | Commercial Banking | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | Commercial Banking | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	21,638
Non-interest income		22,290
Operating Segments | Healthcare Financial Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	31,061	24,067
Non-interest income	31,061	24,067
Operating Segments | Healthcare Financial Services | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	22,052	22,092
Operating Segments | Healthcare Financial Services | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | Healthcare Financial Services | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | Healthcare Financial Services | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	9,009	1,975
Operating Segments | Healthcare Financial Services | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Non-interest income		0
Operating Segments | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	19,364	23,364
Non-interest income	33,978	27,636
Operating Segments | Consumer Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	14,796	19,178
Operating Segments | Consumer Banking | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | Consumer Banking | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,751	3,828
Operating Segments | Consumer Banking | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(183)	358
Operating Segments | Consumer Banking | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	14,614
Non-interest income		4,272
Corporate, Non-Segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	938	854
Non-interest income	34	(14,657)
Corporate, Non-Segment | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(101)	(70)
Corporate, Non-Segment | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate, Non-Segment | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(5)	(8)
Corporate, Non-Segment | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,044	932
Corporate, Non-Segment | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ (904)
Non-interest income		$ (15,511)