Revenue from contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer, Excluding Assessed Tax	$ 268,672	$ 212,406	$ 198,737
Noninterest Income	440,783	323,372	285,277
Deposit Service Fees [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	198,472	162,710	156,032
Investment Advisory, Management and Administrative Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	40,277	39,586	32,916
Other Non Interest Income [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	8,425	10,110	9,789
Non-Interest Income Within the Scope of Other GAAP Topics [Member]
Noninterest Income	172,111	110,966	86,540
Loans and Lease Related Fees
Revenue from Contract with Customer, Excluding Assessed Tax	21,498
Operating Segments [Member] | Commercial Banking [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	60,511	29,085	25,384
Noninterest Income	171,437	83,538	66,867
Operating Segments [Member] | Commercial Banking [Member] | Deposit Service Fees [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	27,663	16,933	14,740
Operating Segments [Member] | Commercial Banking [Member] | Investment Advisory, Management and Administrative Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,350	12,152	10,644
Operating Segments [Member] | Commercial Banking [Member] | Other Non Interest Income [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Operating Segments [Member] | Commercial Banking [Member] | Non-Interest Income Within the Scope of Other GAAP Topics [Member]
Noninterest Income	110,926	54,453	41,483
Operating Segments [Member] | Commercial Banking [Member] | Loans and Lease Related Fees
Revenue from Contract with Customer, Excluding Assessed Tax	21,498
Operating Segments [Member] | Community Banking [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	101,803	80,172	72,456
Noninterest Income	119,691	95,887	97,778
Operating Segments [Member] | Community Banking [Member] | Deposit Service Fees [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	71,353	50,561	48,493
Operating Segments [Member] | Community Banking [Member] | Investment Advisory, Management and Administrative Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	28,957	27,471	22,307
Operating Segments [Member] | Community Banking [Member] | Other Non Interest Income [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,493	2,140	1,656
Operating Segments [Member] | Community Banking [Member] | Non-Interest Income Within the Scope of Other GAAP Topics [Member]
Noninterest Income	17,888	15,715	25,322
Operating Segments [Member] | Community Banking [Member] | Loans and Lease Related Fees
Revenue from Contract with Customer, Excluding Assessed Tax	0
Operating Segments [Member] | HSA Bank [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	104,586	102,814	100,826
Noninterest Income	104,586	102,814	100,826
Operating Segments [Member] | HSA Bank [Member] | Deposit Service Fees [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	97,654	94,844	92,693
Operating Segments [Member] | HSA Bank [Member] | Investment Advisory, Management and Administrative Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Operating Segments [Member] | HSA Bank [Member] | Other Non Interest Income [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6,932	7,970	8,133
Operating Segments [Member] | HSA Bank [Member] | Non-Interest Income Within the Scope of Other GAAP Topics [Member]
Noninterest Income	0	0	0
Operating Segments [Member] | HSA Bank [Member] | Loans and Lease Related Fees
Revenue from Contract with Customer, Excluding Assessed Tax	0
Corporate, Non-Segment [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,772	335	71
Noninterest Income	45,069	41,133	19,806
Corporate, Non-Segment [Member] | Deposit Service Fees [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,802	372	106
Corporate, Non-Segment [Member] | Investment Advisory, Management and Administrative Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	(30)	(37)	(35)
Corporate, Non-Segment [Member] | Other Non Interest Income [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Corporate, Non-Segment [Member] | Non-Interest Income Within the Scope of Other GAAP Topics [Member]
Noninterest Income	43,297	$ 40,798	$ 19,735
Corporate, Non-Segment [Member] | Loans and Lease Related Fees
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0