Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 70,096	$ 52,739	$ 205,821	$ 159,327
Non-interest income	113,636	83,775	338,604	233,234
Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50,807	40,258	150,019	122,166
Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,623		16,198
Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	11,419	9,985	33,260	29,475
Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,247	2,496	6,344	7,686
Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	43,540
Non-interest income		31,036	132,783	73,907
Operating Segments | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	15,868	7,273	46,679	21,429
Non-interest income	40,497	22,782	128,670	59,536
Operating Segments | Commercial Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,573	4,206	21,905	12,400
Operating Segments | Commercial Banking | Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,623		16,198
Operating Segments | Commercial Banking | Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,672	3,067	8,576	9,029
Operating Segments | Commercial Banking | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	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	24,629
Non-interest income		15,509	81,991	38,107
Operating Segments | HSA Bank
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	25,842	24,756	79,352	78,315
Non-interest income	25,842	24,756	79,352	78,315
Operating Segments | HSA Bank | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	24,008	22,886	74,091	72,382
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	0	0
Operating Segments | HSA Bank | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,834	1,870	5,261	5,933
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	0	0
Operating Segments | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	27,897	20,631	78,846	59,352
Non-interest income	33,842	24,292	92,541	71,262
Operating Segments | Consumer Banking | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	18,728	13,079	53,057	37,127
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	8,756	6,926	24,706	20,472
Operating Segments | Consumer Banking | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	413	626	1,083	1,753
Operating Segments | Consumer Banking | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,945
Non-interest income		3,661	13,695	11,910
Corporate, Non-Segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	489	79	944	231
Non-interest income	13,455	11,945	38,041	24,121
Corporate, Non-Segment | Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	498	87	966	257
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	(9)	(8)	(22)	(26)
Corporate, Non-Segment | Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Corporate, Non-Segment | Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 12,966
Non-interest income		$ 11,866	$ 37,097	$ 23,890