Allowance for Credit Losses (ACL) - Disaggregated analysis of the changes in allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Allowance for credit losses
Balance at beginning of period	$ 469,654	$ 370,645	$ 456,573	$ 356,444	$ 356,444
Charge-offs	(8,590)	(7,578)	(16,530)	(12,205)	(40,648)
Recoveries	4,365	4,268	9,626	7,857
Net (charge-offs) recoveries	(4,225)	(3,310)	(6,904)	(4,348)
Provision (recovery)	6,869	60,057	22,629	75,296
Balance at end of period	472,298	427,392	472,298	427,392	456,573
Unfunded Commitment
Allowance for credit losses
Provision (recovery)	(3,000)	(21,700)	(6,100)	(3,800)
Residential Mortgage Sr.
Allowance for credit losses
Balance at beginning of period	87,484	77,351	78,052	72,188	72,188
Charge-offs	(36)	(37)	(379)	(39)
Recoveries	92	302	215	596
Net (charge-offs) recoveries	56	265	(164)	557
Provision (recovery)	(27,988)	3,853	(18,336)	8,724
Balance at end of period	59,552	81,469	59,552	81,469	78,052
Residential Mortgage Jr.
Allowance for credit losses
Balance at beginning of period	1,230	349	745	405	405
Recoveries	50	3	89	8
Net (charge-offs) recoveries	50	3	89	8
Provision (recovery)	(852)	40	(406)	(21)
Balance at end of period	428	392	428	392	745
HELOC
Allowance for credit losses
Balance at beginning of period	11,724	14,318	10,942	14,886	14,886
Charge-offs			(110)	(39)
Recoveries	277	532	569	777
Net (charge-offs) recoveries	277	532	459	738
Provision (recovery)	6,928	(638)	7,528	(1,412)
Balance at end of period	18,929	14,212	18,929	14,212	10,942
Residential Construction
Allowance for credit losses
Balance at beginning of period	4,552	9,176	5,024	8,974	8,974
Charge-offs			(304)
Recoveries	15	22	22	94
Net (charge-offs) recoveries	15	22	(282)	94
Provision (recovery)	5,458	(329)	5,283	(199)
Balance at end of period	10,025	8,869	10,025	8,869	5,024
Commercial Construction and Development
Allowance for credit losses
Balance at beginning of period	60,860	55,069	65,772	45,410	45,410
Charge-offs	(687)	(2)	(2,162)	(2)
Recoveries	144	198	1,151	456
Net (charge-offs) recoveries	(543)	196	(1,011)	454
Provision (recovery)	16,902	49	12,458	9,450
Balance at end of period	77,219	55,314	77,219	55,314	65,772
Consumer
Allowance for credit losses
Balance at beginning of period	23,353	23,319	23,331	22,767	22,767
Charge-offs	(2,198)	(3,017)	(4,695)	(5,746)
Recoveries	825	520	1,950	1,104
Net (charge-offs) recoveries	(1,373)	(2,497)	(2,745)	(4,642)
Provision (recovery)	(9,752)	3,755	(8,358)	6,452
Balance at end of period	12,228	24,577	12,228	24,577	23,331
Multifamily
Allowance for credit losses
Balance at beginning of period	17,012	5,507	13,766	3,684	3,684
Recoveries	41		66
Net (charge-offs) recoveries	41		66
Provision (recovery)	2,708	4,260	5,929	6,083
Balance at end of period	19,761	9,767	19,761	9,767	13,766
Municipal
Allowance for credit losses
Balance at beginning of period	876	879	900	849	849
Provision (recovery)	903	(134)	879	(104)
Balance at end of period	1,779	745	1,779	745	900
CRE Owner Occupied
Allowance for credit losses
Balance at beginning of period	72,597	57,541	71,580	58,083	58,083
Charge-offs	(393)	(35)	(393)	(35)
Recoveries	408	93	511	386
Net (charge-offs) recoveries	15	58	118	351
Provision (recovery)	18,811	13,160	19,725	12,325
Balance at end of period	91,423	70,759	91,423	70,759	71,580
Non Owner Occupied CRE
Allowance for credit losses
Balance at beginning of period	134,698	82,473	137,055	78,485	78,485
Charge-offs	(176)		(247)	(51)
Recoveries	89	334	99	440
Net (charge-offs) recoveries	(87)	334	(148)	389
Provision (recovery)	(35,596)	32,462	(37,892)	36,395
Balance at end of period	99,015	115,269	99,015	115,269	137,055
C & I
Allowance for credit losses
Balance at beginning of period	55,268	44,663	49,406	50,713	50,713
Charge-offs	(5,100)	(4,487)	(8,240)	(6,293)
Recoveries	2,424	2,264	4,954	3,996
Net (charge-offs) recoveries	(2,676)	(2,223)	(3,286)	(2,297)
Provision (recovery)	29,347	3,579	35,819	(2,397)
Balance at end of period	$ 81,939	$ 46,019	$ 81,939	$ 46,019	$ 49,406