Loans Receivable, Net - ACL Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for loan and lease losses
Balance at beginning of period	$ 182,283	$ 172,665	$ 158,243
Acquisitions			371
Provision for credit losses	20,790	17,433	16,380
Charge-offs	(15,095)	(14,970)	(11,594)
Recoveries	4,779	7,155	9,265
Balance at end of period	192,757	182,283	172,665
Residential Real Estate
Allowance for loan and lease losses
Balance at beginning of period	19,683	16,458	9,604
Acquisitions			0
Provision for credit losses	2,645	3,162	6,517
Charge-offs	(20)	(17)	(38)
Recoveries	17	80	375
Balance at end of period	22,325	19,683	16,458
Commercial Real Estate
Allowance for loan and lease losses
Balance at beginning of period	125,816	117,901	86,999
Acquisitions			309
Provision for credit losses	6,748	7,231	28,996
Charge-offs	(2,080)	(2,171)	(279)
Recoveries	440	2,855	1,876
Balance at end of period	130,924	125,816	117,901
Other Commercial
Allowance for loan and lease losses
Balance at beginning of period	21,454	24,703	49,133
Acquisitions			62
Provision for credit losses	1,996	(704)	(23,444)
Charge-offs	(3,891)	(4,201)	(4,826)
Recoveries	1,635	1,656	3,778
Balance at end of period	21,194	21,454	24,703
Home Equity
Allowance for loan and lease losses
Balance at beginning of period	10,759	8,566	8,182
Acquisitions			0
Provision for credit losses	969	1,943	186
Charge-offs	(129)	(85)	(45)
Recoveries	167	335	243
Balance at end of period	11,766	10,759	8,566
Other Consumer
Allowance for loan and lease losses
Balance at beginning of period	4,571	5,037	4,325
Acquisitions			0
Provision for credit losses	8,432	5,801	4,125
Charge-offs	(8,975)	(8,496)	(6,406)
Recoveries	2,520	2,229	2,993
Balance at end of period	$ 6,548	$ 4,571	$ 5,037