LOANS AND ALLOWANCE FOR CREDIT LOSSES - RISK CATEGORY (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Loans
Revolving Loans Amortized Cost Basis	$ 1,173,494		$ 1,173,494		$ 864,686
Revolving Loans Converted To Term Loans	197,075		197,075		161,226
Loans, Gross Charge-offs
Revolving Loans Amortized Cost Basis			14,759		15,061
Lease
Year One	23,107		23,107		46,253
Year Two	37,677		37,677		24,088
Year Three	18,178		18,178		10,427
Year Four	6,983		6,983		4,754
Year Five	2,901		2,901		2,371
Prior	807		807		698
Total Loans	89,653		89,653		88,591
Lease, Gross Charge-offs
Year One					20
Year Two			45		113
Year Three			13
Prior			32		8
Total			90		141
Loans and Lease
Year One	309,101		309,101		1,353,074
Year Two	840,959		840,959		981,145
Year Three	824,818		824,818		758,188
Year Four	631,919		631,919		439,564
Year Five	591,355		591,355		206,951
Prior	728,196		728,196		475,027
Total loans	5,296,917		5,296,917		5,239,861
Loans and Lease, Gross Charge-offs
Year One			33,515		20,447
Year Two			1,224		5,667
Year Three			52		24
Year Four			14
Prior			32		15
Total, YTD Gross Charge-offs	7,330	$ 3,672	49,596	$ 36,312	41,214
Loans held for investment fair value	0		0		0
Pass
Loans
Revolving Loans Amortized Cost Basis	1,168,857		1,168,857		858,643
Revolving Loans Converted To Term Loans	196,731		196,731		160,406
Lease
Year One	23,107		23,107		45,824
Year Two	37,526		37,526		23,956
Year Three	17,812		17,812		10,265
Year Four	6,883		6,883		4,571
Year Five	2,813		2,813		2,344
Prior	740		740		545
Total Loans	88,881		88,881		87,505
Loans and Lease
Year One	307,834		307,834		1,328,184
Year Two	839,814		839,814		975,037
Year Three	820,180		820,180		752,275
Year Four	623,002		623,002		438,155
Year Five	581,043		581,043		201,876
Prior	684,941		684,941		451,439
Total loans	5,222,402		5,222,402		5,166,015
Special Mention
Loans
Revolving Loans Amortized Cost Basis	2,167		2,167		2,493
Lease
Year One					429
Year Two	151		151		30
Year Three	23		23		162
Year Four	67		67		183
Year Five	88		88		27
Prior	67		67
Total Loans	396		396		919
Lease, Gross Charge-offs
Prior					88
Loans and Lease
Year One	1,256		1,256		24,841
Year Two	430		430		3,444
Year Three	2,251		2,251		4,009
Year Four	6,307		6,307		183
Year Five	7,204		7,204		3,695
Prior	32,808		32,808		13,229
Total loans	52,423		52,423		51,894
Substandard
Loans
Revolving Loans Amortized Cost Basis	2,470		2,470		3,550
Revolving Loans Converted To Term Loans	344		344		820
Lease
Year Two					102
Year Three	343		343
Year Four	33		33
Prior					65
Total Loans	376		376		167
Loans and Lease
Year One	11		11		49
Year Two	715		715		2,664
Year Three	2,387		2,387		1,904
Year Four	2,610		2,610		1,226
Year Five	3,108		3,108		1,380
Prior	10,447		10,447		10,359
Total loans	22,092		22,092		21,952
Traditional Banking
Lease
Total Loans	89,653		89,653		88,591
Lease, Gross Charge-offs
Total	32		90
Loans and Lease
Total loans	4,566,896		4,566,896		4,618,569
Loans and Lease, Gross Charge-offs
Total, YTD Gross Charge-offs	2,308	332	3,022	902
Residential real estate | Residential Real Estate - Owner Occupied
Loans
Year One	66,477		66,477		346,236
Year Two	242,784		242,784		203,241
Year Three	191,341		191,341		176,915
Year Four	164,204		164,204		168,719
Year Five	158,838		158,838		61,022
Prior	216,916		216,916		186,077
Revolving Loans Converted To Term Loans	5,825		5,825		2,474
Loans	1,046,385		1,046,385		1,144,684
Loans, Gross Charge-offs
Year Two			10		10
Year Three			39		16
Year Four			13
Total			62		26
Residential real estate | Residential Real Estate - Owner Occupied | Pass
Loans
Year One	66,466		66,466		346,195
Year Two	242,069		242,069		200,715
Year Three	189,402		189,402		175,030
Year Four	161,944		161,944		167,493
Year Five	156,724		156,724		59,982
Prior	201,870		201,870		170,402
Revolving Loans Converted To Term Loans	5,825		5,825		2,474
Loans	1,024,300		1,024,300		1,122,291
Residential real estate | Residential Real Estate - Owner Occupied | Special Mention
Loans
Year One					41
Year Five	96		96
Prior	5,488		5,488		6,309
Loans	5,584		5,584		6,350
Residential real estate | Residential Real Estate - Owner Occupied | Substandard
Loans
Year One	11		11
Year Two	715		715		2,526
Year Three	1,939		1,939		1,885
Year Four	2,260		2,260		1,226
Year Five	2,018		2,018		1,040
Prior	9,558		9,558		9,366
Loans	16,501		16,501		16,043
Residential real estate | Residential Real Estate - Owner Occupied | Traditional Banking
Loans
Loans	1,046,385		1,046,385		1,144,684
Loans, Gross Charge-offs
Total	10	9	62	24
Residential real estate | Residential Real Estate - Non Owner Occupied
Loans
Year One	11,204		11,204		63,575
Year Two	54,563		54,563		71,798
Year Three	60,560		60,560		82,830
Year Four	70,475		70,475		47,395
Year Five	59,171		59,171		28,416
Prior	62,492		62,492		44,354
Revolving Loans Converted To Term Loans	7,808		7,808		7,597
Loans	326,273		326,273		345,965
Residential real estate | Residential Real Estate - Non Owner Occupied | Pass
Loans
Year One	11,204		11,204		63,405
Year Two	54,563		54,563		69,827
Year Three	58,719		58,719		82,814
Year Four	70,475		70,475		47,395
Year Five	59,171		59,171		28,416
Prior	62,420		62,420		44,280
Revolving Loans Converted To Term Loans	7,808		7,808		7,597
Loans	324,360		324,360		343,734
Residential real estate | Residential Real Estate - Non Owner Occupied | Special Mention
Loans
Year One					170
Year Two					1,971
Year Three	1,841		1,841
Prior	20		20		26
Loans	1,861		1,861		2,167
Residential real estate | Residential Real Estate - Non Owner Occupied | Substandard
Loans
Year Three					16
Prior	52		52		48
Loans	52		52		64
Residential real estate | Residential Real Estate - Non Owner Occupied | Traditional Banking
Loans
Loans	326,273		326,273		345,965
Residential real estate | Home equity
Loans
Revolving Loans Amortized Cost Basis	341,204		341,204		295,133
Loans	341,204		341,204		295,133
Loans, Gross Charge-offs
Revolving Loans Amortized Cost Basis			29		2
Total			29		2
Residential real estate | Home equity | Pass
Loans
Revolving Loans Amortized Cost Basis	339,134		339,134		292,890
Loans	339,134		339,134		292,890
Residential real estate | Home equity | Special Mention
Loans
Revolving Loans Amortized Cost Basis					235
Loans					235
Residential real estate | Home equity | Substandard
Loans
Revolving Loans Amortized Cost Basis	2,070		2,070		2,008
Loans	2,070		2,070		2,008
Residential real estate | Home equity | Traditional Banking
Loans
Loans	341,204		341,204		295,133
Loans, Gross Charge-offs
Total	29		29
Commercial real estate
Loans
Year One	88,173		88,173		366,510
Year Two	219,028		219,028		440,663
Year Three	345,505		345,505		351,974
Year Four	282,875		282,875		174,093
Year Five	313,265		313,265		88,125
Prior	352,665		352,665		186,047
Revolving Loans Amortized Cost Basis	33,509		33,509		34,207
Revolving Loans Converted To Term Loans	178,283		178,283		143,670
Loans	1,813,303		1,813,303		1,785,289
Commercial real estate | Pass
Loans
Year One	86,991		86,991		342,658
Year Two	219,028		219,028		439,643
Year Three	345,505		345,505		351,600
Year Four	278,035		278,035		174,093
Year Five	306,211		306,211		84,457
Prior	327,303		327,303		179,849
Revolving Loans Amortized Cost Basis	33,192		33,192		32,491
Revolving Loans Converted To Term Loans	178,283		178,283		143,670
Loans	1,774,548		1,774,548		1,748,461
Commercial real estate | Special Mention
Loans
Year One	1,182		1,182		23,852
Year Two					1,020
Year Three					374
Year Four	4,840		4,840
Year Five	5,964		5,964		3,668
Prior	24,930		24,930		5,330
Revolving Loans Amortized Cost Basis	317		317		1,716
Loans	37,233		37,233		35,960
Commercial real estate | Substandard
Loans
Year Five	1,090		1,090
Prior	432		432		868
Loans	1,522		1,522		868
Commercial real estate | Traditional Banking
Loans
Loans	1,813,303		1,813,303		1,785,289
Construction & land development
Loans
Year One	24,164		24,164		107,827
Year Two	110,623		110,623		89,106
Year Three	88,554		88,554		16,936
Year Four	16,886		16,886		297
Year Five	2,532		2,532		125
Prior	4,109		4,109		125
Revolving Loans Amortized Cost Basis	862		862		225
Revolving Loans Converted To Term Loans					2,697
Loans	247,730		247,730		217,338
Construction & land development | Pass
Loans
Year One	24,164		24,164		107,827
Year Two	110,382		110,382		89,106
Year Three	88,554		88,554		16,936
Year Four	16,886		16,886		297
Year Five	2,532		2,532		125
Prior	4,109		4,109		125
Revolving Loans Amortized Cost Basis	862		862		225
Revolving Loans Converted To Term Loans					2,697
Loans	247,489		247,489		217,338
Construction & land development | Special Mention
Loans
Year Two	241		241
Loans	241		241
Construction & land development | Traditional Banking
Loans
Loans	247,730		247,730		217,338
Commercial & industrial | Commercial and Industrial
Loans
Year One	54,816		54,816		141,151
Year Two	80,360		80,360		87,956
Year Three	67,780		67,780		73,625
Year Four	53,017		53,017		13,150
Year Five	28,995		28,995		10,514
Prior	30,161		30,161		12,258
Revolving Loans Amortized Cost Basis	117,623		117,623		120,636
Revolving Loans Converted To Term Loans	5,159		5,159		4,788
Loans	437,911		437,911		464,078
Commercial & industrial | Commercial and Industrial | Pass
Loans
Year One	54,742		54,742		140,753
Year Two	80,322		80,322		87,497
Year Three	67,288		67,288		70,149
Year Four	51,615		51,615		13,150
Year Five	27,939		27,939		10,175
Prior	27,519		27,519		10,782
Revolving Loans Amortized Cost Basis	115,632		115,632		120,069
Revolving Loans Converted To Term Loans	4,815		4,815		3,968
Loans	429,872		429,872		456,543
Commercial & industrial | Commercial and Industrial | Special Mention
Loans
Year One	74		74		349
Year Two	38		38		423
Year Three	387		387		3,473
Year Four	1,400		1,400
Year Five	1,056		1,056
Prior	2,303		2,303		1,476
Revolving Loans Amortized Cost Basis	1,850		1,850		542
Loans	7,108		7,108		6,263
Commercial & industrial | Commercial and Industrial | Substandard
Loans
Year One					49
Year Two					36
Year Three	105		105		3
Year Four	2		2
Year Five					339
Prior	339		339
Revolving Loans Amortized Cost Basis	141		141		25
Revolving Loans Converted To Term Loans	344		344		820
Loans	931		931		1,272
Commercial & industrial | Commercial and Industrial | Traditional Banking
Loans
Loans	437,911		437,911		464,078
Aircraft
Loans
Year One	25,211		25,211		97,761
Year Two	80,760		80,760		55,896
Year Three	48,925		48,925		44,721
Year Four	37,035		37,035		30,628
Year Five	25,287		25,287		14,195
Prior	18,109		18,109		6,850
Loans	235,327		235,327		250,051
Aircraft | Pass
Loans
Year One	25,211		25,211		97,761
Year Two	80,760		80,760		55,896
Year Three	48,925		48,925		44,721
Year Four	36,720		36,720		30,628
Year Five	25,287		25,287		14,195
Prior	18,051		18,051		6,850
Loans	234,954		234,954		250,051
Aircraft | Substandard
Loans
Year Four	315		315
Prior	58		58
Loans	373		373
Aircraft | Traditional Banking
Loans
Loans	235,327		235,327		250,051
Consumer
Loans
Year One	5,480		5,480		3,947
Year Two	2,714		2,714		1,194
Year Three	274		274		181
Year Four	110		110		74
Year Five	32		32		1,187
Prior	1,736		1,736		2,246
Revolving Loans Amortized Cost Basis	18,764		18,764		18,611
Loans	29,110		29,110		27,440
Loans, Gross Charge-offs
Year One			823		9
Year Two			1,169		11
Year Three					8
Year Four			1
Prior					7
Revolving Loans Amortized Cost Basis			848		1,147
Total			2,841		1,182
Consumer | Pass
Loans
Year One	5,480		5,480		3,947
Year Two	2,714		2,714		1,194
Year Three	274		274		181
Year Four	110		110		74
Year Five	32		32		1,186
Prior	1,728		1,728		2,234
Revolving Loans Amortized Cost Basis	18,764		18,764		18,611
Loans	29,102		29,102		27,427
Consumer | Substandard
Loans
Year Five					1
Prior	8		8		12
Loans	8		8		13
Consumer | Credit Card | Traditional Banking
Loans
Loans	16,762		16,762		16,654
Loans, Gross Charge-offs
Total	59	30	190	103
Consumer | Overdrafts | Traditional Banking
Loans
Loans	827		827		694
Loans, Gross Charge-offs
Total	231	243	658	676
Consumer | Automobile loans | Traditional Banking
Loans
Loans	1,340		1,340		2,664
Loans, Gross Charge-offs
Total		30		37
Consumer | Other consumer | Traditional Banking
Loans
Loans	10,181		10,181		7,428
Loans, Gross Charge-offs
Total	1,947	20	1,993	62
Warehouse lines of credit
Loans
Revolving Loans Amortized Cost Basis	595,163		595,163		339,723
Loans	595,163		595,163		339,723
Warehouse lines of credit | Pass
Loans
Revolving Loans Amortized Cost Basis	595,163		595,163		339,723
Loans	595,163		595,163		339,723
Tax Refund Solution
Loans
Year One	302		302		149,207
Loans	302		302		149,207
Loans, Gross Charge-offs
Year One			32,692		20,418
Year Two					5,533
Total			32,692		25,951
Tax Refund Solution | Pass
Loans
Year One	302		302		149,207
Loans	302		302		149,207
Republic Credit Solution
Loans
Year One	10,167		10,167		30,607
Year Two	12,450		12,450		7,203
Year Three	3,701		3,701		579
Year Four	334		334		454
Year Five	334		334		996
Prior	41,201		41,201		36,372
Revolving Loans Amortized Cost Basis	66,369		66,369		56,151
Loans	134,556		134,556		132,362
Loans, Gross Charge-offs
Revolving Loans Amortized Cost Basis			13,882		13,912
Total			13,882		13,912
Republic Credit Solution | Pass
Loans
Year One	10,167		10,167		30,607
Year Two	12,450		12,450		7,203
Year Three	3,701		3,701		579
Year Four	334		334		454
Year Five	334		334		996
Prior	41,201		41,201		36,372
Revolving Loans Amortized Cost Basis	66,110		66,110		54,634
Loans	134,297		134,297		130,845
Republic Credit Solution | Substandard
Loans
Revolving Loans Amortized Cost Basis	259		259		1,517
Loans	259		259		1,517
Republic Credit Solution | Republic Credit Solutions
Loans
Loans	134,556		134,556		$ 132,362
Loans, Gross Charge-offs
Total	$ 5,022	$ 3,340	$ 13,882	$ 9,459