Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 59,715	$ 65,131
Non-interest income	70,766	104,035
Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	45,436	47,827
Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,427	4,498
Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	6,587	10,597
Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,265	2,209
Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	11,051
Non-interest income		38,904
Operating Segments | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	12,584	14,317
Non-interest income	35,397	38,743
Operating Segments | Commercial Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,390	6,685
Operating Segments | Commercial Banking | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,427	4,498
Operating Segments | Commercial Banking | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,767	3,134
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	22,813
Non-interest income		24,426
Operating Segments | HSA Bank
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	24,067	26,958
Non-interest income	24,067	26,958
Operating Segments | HSA Bank | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	22,092	25,134
Operating Segments | HSA Bank | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | HSA Bank | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Operating Segments | HSA Bank | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,975	1,824
Operating Segments | HSA Bank | 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	22,210	23,819
Non-interest income	25,959	27,901
Operating Segments | Consumer Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	18,024	15,963
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	3,828	7,471
Operating Segments | Consumer Banking | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	358	385
Operating Segments | Consumer Banking | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,749
Non-interest income		4,082
Corporate, Non-Segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	854	37
Non-interest income	(14,657)	10,433
Corporate, Non-Segment | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(70)	45
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	(8)	(8)
Corporate, Non-Segment | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	932	0
Corporate, Non-Segment | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ (15,511)
Non-interest income		$ 10,396