PORTFOLIO LOANS - Schedule of Risk Grades of Portfolio Loans, Further Sorted by Origination Year (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	$ 1,520,323	$ 2,288,440
2022 / 2021	1,785,798	1,926,481
2021 / 2020	1,552,072	962,405
2020 / 2019	705,335	558,294
2019 / 2018	468,659	323,245
Prior	660,624	644,140
Revolving Loans	958,223	1,022,697
Total	7,651,034	7,725,702
2023 / 2022	289
2022 / 2021	76
2021 / 2020	592
2020 / 2019	34
2019 / 2018	391
Prior	3,036
Revolving Loans	0
Total	4,418
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	6,736,067	6,964,678
Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Total	747,122	563,897
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	96,057	91,405
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	64,347	90,655
Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Total	7,441	15,067
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	394,854	544,993
2022 / 2021	295,539	320,898
2021 / 2020	184,527	142,171
2020 / 2019	96,530	67,027
2019 / 2018	47,510	55,404
Prior	169,911	159,475
Revolving Loans	647,123	684,186
Total	1,835,994	1,974,154
2023 / 2022	284
2022 / 2021	0
2021 / 2020	420
2020 / 2019	0
2019 / 2018	316
Prior	1,409
Revolving Loans	0
Total	2,429
Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	306,578	479,893
2022 / 2021	220,847	266,122
2021 / 2020	159,130	136,445
2020 / 2019	71,025	52,046
2019 / 2018	35,927	50,764
Prior	143,078	135,000
Revolving Loans	526,170	548,225
Total	1,462,755	1,668,495
Commercial | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	78,603	54,195
2022 / 2021	65,703	49,382
2021 / 2020	21,421	3,288
2020 / 2019	23,919	7,201
2019 / 2018	7,035	1,258
Prior	21,293	2,160
Revolving Loans	78,442	84,274
Total	296,416	201,758
Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	792	1,958
2022 / 2021	8,224	937
2021 / 2020	2,917	1,642
2020 / 2019	1,076	974
2019 / 2018	686	1,000
Prior	3,274	17,024
Revolving Loans	29,519	23,005
Total	46,488	46,540
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	8,715	8,926
2022 / 2021	765	1,165
2021 / 2020	942	570
2020 / 2019	426	6,671
2019 / 2018	3,734	2,382
Prior	1,859	5,191
Revolving Loans	11,292	26,282
Total	27,733	51,187
Commercial | Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	166	21
2022 / 2021	0	3,292
2021 / 2020	117	226
2020 / 2019	84	135
2019 / 2018	128	0
Prior	407	100
Revolving Loans	1,700	2,400
Total	2,602	6,174
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	578,595	978,317
2022 / 2021	882,350	898,122
2021 / 2020	844,293	558,607
2020 / 2019	441,134	397,516
2019 / 2018	344,373	201,813
Prior	226,537	209,715
Revolving Loans	20,055	17,783
Total	3,337,337	3,261,873
2023 / 2022	0
2022 / 2021	0
2021 / 2020	0
2020 / 2019	0
2019 / 2018	0
Prior	953
Revolving Loans	0
Total	953
Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	395,644	883,688
2022 / 2021	824,506	819,133
2021 / 2020	720,052	478,452
2020 / 2019	399,195	297,525
2019 / 2018	271,078	161,409
Prior	199,662	198,419
Revolving Loans	16,893	13,083
Total	2,827,030	2,851,709
Commercial real estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	166,795	77,346
2022 / 2021	47,070	56,113
2021 / 2020	92,848	64,282
2020 / 2019	34,010	96,664
2019 / 2018	68,196	21,592
Prior	19,396	5,758
Revolving Loans	3,112	4,700
Total	431,427	326,455
Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	14,313	11,943
2022 / 2021	10,507	5,389
2021 / 2020	12,446	12,386
2020 / 2019	4,968	1,420
2019 / 2018	3,297	6,917
Prior	3,014	5,471
Revolving Loans	0	0
Total	48,545	43,526
Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	1,796	5,340
2022 / 2021	188	13,528
2021 / 2020	18,862	3,454
2020 / 2019	2,938	1,907
2019 / 2018	1,802	10,248
Prior	3,856	62
Revolving Loans	50	0
Total	29,492	34,539
Commercial real estate | Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	47	0
2022 / 2021	79	3,959
2021 / 2020	85	33
2020 / 2019	23	0
2019 / 2018	0	1,647
Prior	609	5
Revolving Loans	0	0
Total	843	5,644
Real estate construction
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	213,138	230,042
2022 / 2021	132,868	203,743
2021 / 2020	85,593	71,184
2020 / 2019	2,938	1,539
2019 / 2018	1,364	1,901
Prior	3,178	3,149
Revolving Loans	22,638	18,911
Total	461,717	530,469
2023 / 2022	0
2022 / 2021	0
2021 / 2020	0
2020 / 2019	0
2019 / 2018	0
Prior	0
Revolving Loans	0
Total	0
Real estate construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	204,952	219,112
2022 / 2021	128,462	191,724
2021 / 2020	85,086	68,015
2020 / 2019	2,616	1,490
2019 / 2018	1,323	1,901
Prior	2,934	1,751
Revolving Loans	22,638	18,911
Total	448,011	502,904
Real estate construction | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	2,859	8,530
2022 / 2021	4,406	12,019
2021 / 2020	507	3,169
2020 / 2019	322	48
2019 / 2018	41	0
Prior	0	1,398
Revolving Loans	0	0
Total	8,135	25,164
Real estate construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022		0
2022 / 2021		0
2021 / 2020		0
2020 / 2019		1
2019 / 2018		0
Prior		0
Revolving Loans		0
Total	0	1
Real estate construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	5,327	2,400
2022 / 2021	0	0
2021 / 2020	0	0
2020 / 2019	0	0
2019 / 2018	0	0
Prior	0	0
Revolving Loans	0	0
Total	5,327	2,400
Real estate construction | Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	0
2022 / 2021	0
2021 / 2020	0
2020 / 2019	0
2019 / 2018	0
Prior	244
Revolving Loans	0
Total	244	0
Retail real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	244,851	400,507
2022 / 2021	382,017	460,072
2021 / 2020	414,578	177,299
2020 / 2019	158,032	79,126
2019 / 2018	70,815	58,481
Prior	260,142	270,808
Revolving Loans	190,020	210,789
Total	1,720,455	1,657,082
2023 / 2022	0
2022 / 2021	5
2021 / 2020	0
2020 / 2019	29
2019 / 2018	72
Prior	301
Revolving Loans	0
Total	407
Retail real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	243,400	396,547
2022 / 2021	376,922	456,158
2021 / 2020	411,723	175,148
2020 / 2019	156,762	77,569
2019 / 2018	70,099	56,887
Prior	256,571	267,387
Revolving Loans	187,420	209,903
Total	1,702,897	1,639,599
Retail real estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	1,096	2,928
2022 / 2021	4,137	2,991
2021 / 2020	2,442	1,846
2020 / 2019	954	1,444
2019 / 2018	536	1,063
Prior	234	27
Revolving Loans	1,745	221
Total	11,144	10,520
Retail real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	286	945
2022 / 2021	358	0
2021 / 2020	0	0
2020 / 2019	0	0
2019 / 2018	0	0
Prior	380	393
Revolving Loans	0	0
Total	1,024	1,338
Retail real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	69	77
2022 / 2021	72	732
2021 / 2020	292	198
2020 / 2019	49	81
2019 / 2018	80	141
Prior	997	1,293
Revolving Loans	236	7
Total	1,795	2,529
Retail real estate | Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	0	10
2022 / 2021	528	191
2021 / 2020	121	107
2020 / 2019	267	32
2019 / 2018	100	390
Prior	1,960	1,708
Revolving Loans	619	658
Total	3,595	3,096
Retail other
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	88,885	134,581
2022 / 2021	93,024	43,646
2021 / 2020	23,081	13,144
2020 / 2019	6,701	13,086
2019 / 2018	4,597	5,646
Prior	856	993
Revolving Loans	78,387	91,028
Total	295,531	302,124
2023 / 2022	5
2022 / 2021	71
2021 / 2020	172
2020 / 2019	5
2019 / 2018	3
Prior	373
Revolving Loans	0
Total	629
Retail other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	88,885	134,567
2022 / 2021	92,931	43,512
2021 / 2020	23,019	13,141
2020 / 2019	6,701	13,086
2019 / 2018	4,597	5,646
Prior	854	991
Revolving Loans	78,387	91,028
Total	295,374	301,971
Retail other | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Retail other | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Retail other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Retail other | Substandard Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
2023 / 2022	0	14
2022 / 2021	93	134
2021 / 2020	62	3
2020 / 2019	0	0
2019 / 2018	0	0
Prior	2	2
Revolving Loans	0	0
Total	$ 157	$ 153