LOANS AND ALLOWANCE FOR CREDIT LOSSES - RISK CATEGORY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Risk category of rated loans
Year One	$ 1,204,992	$ 1,319,443
Year Two	684,877	659,624
Year Three	419,245	362,461
Year Four	223,625	344,618
Prior	670,905	770,323
Revolving Loans Amortized Cost Basis	1,204,651	1,296,221
Revolving Loans Converted To Term Loans	88,267	60,413
Loans	$ 4,496,562	4,813,103
Maximum number of days past due for loans to be non rated	80 days
Loans held for investment fair value	$ 170	497
Pass
Risk category of rated loans
Year One	1,169,222	1,294,478
Year Two	679,039	623,234
Year Three	384,005	360,803
Year Four	208,648	329,823
Prior	626,561	732,111
Revolving Loans Amortized Cost Basis	1,202,123	1,292,863
Revolving Loans Converted To Term Loans	88,267	57,610
Loans	4,357,865	4,690,922
Special Mention
Risk category of rated loans
Year One	35,725	21,592
Year Two	4,844	34,530
Year Three	34,094	278
Year Four	11,274	12,965
Prior	29,075	20,609
Revolving Loans Amortized Cost Basis	279	127
Loans	115,291	90,101
Minimum outstanding lending relationships, above which loans are analyzed by the Bank's internal loan review department	1,000
Substandard
Risk category of rated loans
Year One	45	3,373
Year Two	994	1,860
Year Three	1,146	1,380
Year Four	3,703	1,830
Prior	15,269	17,603
Revolving Loans Amortized Cost Basis	2,249	3,231
Revolving Loans Converted To Term Loans		2,803
Loans	23,406	32,080
Minimum outstanding lending relationships, above which loans are analyzed by the Bank's internal loan review department	1,000
Doubtful / Loss
Risk category of rated loans
Minimum outstanding lending relationships, above which loans are analyzed by the Bank's internal loan review department	1,000
Core Banking Activities
Risk category of rated loans
Loans	4,352,509	4,678,445
Traditional Banking
Risk category of rated loans
Loans	3,501,959	3,715,649
Traditional Banking | Subprime
Risk category of rated loans
Loans	48,000	52,000
Loans originated for Community Reinvestment Act ("CRA") purposes	28,000	27,000
Republic Processing Group
Risk category of rated loans
Loans	$ 144,053	134,658
Republic Credit Solutions | Line of credit and credit card
Risk category of rated loans
Consumer loans held for sale period	3 days
Loans held for investment fair value	$ 26,000	18,000
Residential Real Estate | Residential Real Estate - Owner Occupied
Risk category of rated loans
Year One	219,327	268,707
Year Two	213,880	133,805
Year Three	89,865	84,127
Year Four	51,523	69,654
Prior	246,136	323,507
Loans	820,731	879,800
Residential Real Estate | Residential Real Estate - Owner Occupied | Pass
Risk category of rated loans
Year One	218,981	268,313
Year Two	213,010	132,018
Year Three	89,186	82,754
Year Four	50,301	67,430
Prior	226,852	301,366
Loans	798,330	851,881
Residential Real Estate | Residential Real Estate - Owner Occupied | Special Mention
Risk category of rated loans
Year One	301
Year Two		364
Year Three		42
Year Four	33	1,610
Prior	8,209	8,730
Loans	8,543	10,746
Residential Real Estate | Residential Real Estate - Owner Occupied | Substandard
Risk category of rated loans
Year One	45	394
Year Two	870	1,423
Year Three	679	1,331
Year Four	1,189	614
Prior	11,075	13,411
Loans	13,858	17,173
Residential Real Estate | Residential Real Estate - Owner Occupied | Traditional Banking
Risk category of rated loans
Loans	820,731	879,800
Residential Real Estate | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
Year One	107,041	73,291
Year Two	65,947	63,102
Year Three	44,376	43,610
Year Four	29,292	45,759
Prior	56,099	38,397
Revolving Loans Converted To Term Loans	3,568	621
Loans	306,323	264,780
Residential Real Estate | Residential Real Estate - Non Owner Occupied | Pass
Risk category of rated loans
Year One	107,041	73,291
Year Two	65,947	63,102
Year Three	44,376	43,610
Year Four	29,292	45,759
Prior	55,872	38,316
Revolving Loans Converted To Term Loans	3,568	621
Loans	306,096	264,699
Residential Real Estate | Residential Real Estate - Non Owner Occupied | Special Mention
Risk category of rated loans
Prior	132
Loans	132
Residential Real Estate | Residential Real Estate - Non Owner Occupied | Substandard
Risk category of rated loans
Prior	95	81
Loans	95	81
Residential Real Estate | Residential Real Estate - Non Owner Occupied | Traditional Banking
Risk category of rated loans
Loans	306,323	264,780
Residential Real Estate | Home equity
Risk category of rated loans
Revolving Loans Amortized Cost Basis	210,578	240,640
Loans	210,578	240,640
Residential Real Estate | Home equity | Pass
Risk category of rated loans
Revolving Loans Amortized Cost Basis	208,429	237,633
Loans	208,429	237,633
Residential Real Estate | Home equity | Special Mention
Risk category of rated loans
Revolving Loans Amortized Cost Basis	279	127
Loans	279	127
Residential Real Estate | Home equity | Substandard
Risk category of rated loans
Revolving Loans Amortized Cost Basis	1,870	2,880
Loans	1,870	2,880
Residential Real Estate | Home equity | Traditional Banking
Risk category of rated loans
Loans	210,578	240,640
Commercial Real Estate
Risk category of rated loans
Year One	507,728	321,543
Year Two	262,692	289,569
Year Three	186,653	166,778
Year Four	107,872	183,549
Prior	308,906	328,894
Revolving Loans Converted To Term Loans	82,158	58,752
Loans	1,456,009	1,349,085
Commercial Real Estate | Pass
Risk category of rated loans
Year One	487,669	315,550
Year Two	260,182	258,251
Year Three	156,748	166,542
Year Four	94,212	171,207
Prior	286,223	315,336
Revolving Loans Converted To Term Loans	82,158	55,949
Loans	1,367,192	1,282,835
Commercial Real Estate | Special Mention
Risk category of rated loans
Year One	20,059	3,397
Year Two	2,399	30,969
Year Three	29,639	236
Year Four	11,207	11,355
Prior	18,778	9,659
Loans	82,082	55,616
Commercial Real Estate | Substandard
Risk category of rated loans
Year One		2,596
Year Two	111	349
Year Three	266
Year Four	2,453	987
Prior	3,905	3,899
Revolving Loans Converted To Term Loans		2,803
Loans	6,735	10,634
Commercial Real Estate | Traditional Banking
Risk category of rated loans
Loans	1,456,009	1,349,085
Construction & land development
Risk category of rated loans
Year One	89,078	53,972
Year Two	32,570	34,197
Year Three	6,269	7,840
Year Four	1,155	701
Prior	265	1,964
Loans	129,337	98,674
Construction & land development | Pass
Risk category of rated loans
Year One	89,078	53,972
Year Two	32,046	31,756
Year Three	2,599	7,840
Year Four	1,155	701
Prior	265	1,964
Loans	125,143	96,233
Construction & land development | Special Mention
Risk category of rated loans
Year Two	524	2,397
Year Three	3,670
Loans	4,194	2,397
Construction & land development | Substandard
Risk category of rated loans
Year Two		44
Loans		44
Construction & land development | Traditional Banking
Risk category of rated loans
Loans	129,337	98,674
Commercial | Commercial and Industrial
Risk category of rated loans
Year One	166,185	124,563
Year Two	46,415	85,387
Year Three	60,150	33,391
Year Four	18,144	32,303
Prior	46,928	48,912
Revolving Loans Converted To Term Loans	2,541	1,040
Loans	340,363	325,596
Commercial | Commercial and Industrial | Pass
Risk category of rated loans
Year One	150,820	105,985
Year Two	44,481	84,575
Year Three	59,186	33,391
Year Four	18,110	32,303
Prior	44,972	46,697
Revolving Loans Converted To Term Loans	2,541	1,040
Loans	320,110	303,991
Commercial | Commercial and Industrial | Special Mention
Risk category of rated loans
Year One	15,365	18,195
Year Two	1,921	800
Year Three	785
Year Four	34
Prior	1,956	2,215
Loans	20,061	21,210
Commercial | Commercial and Industrial | Substandard
Risk category of rated loans
Year One		383
Year Two	13	12
Year Three	179
Loans	192	395
Commercial | Commercial and Industrial | Traditional Banking
Risk category of rated loans
Loans	340,363	325,596
Commercial | Paycheck Protection Program
Risk category of rated loans
Year One	40,607	392,319
Year Two	15,407
Loans	56,014	392,319
Commercial | Paycheck Protection Program | Pass
Risk category of rated loans
Year One	40,607	392,319
Year Two	15,407
Loans	56,014	392,319
Commercial | Paycheck Protection Program | Traditional Banking
Risk category of rated loans
Loans	56,014	392,319
Aircraft
Risk category of rated loans
Year One	65,886	55,823
Year Two	43,301	30,529
Year Three	22,933	13,804
Year Four	9,119	1,219
Prior	1,655
Loans	142,894	101,375
Aircraft | Pass
Risk category of rated loans
Year One	65,886	55,823
Year Two	43,301	30,529
Year Three	22,933	13,804
Year Four	9,119	1,219
Prior	1,655
Loans	142,894	101,375
Aircraft | Traditional Banking
Risk category of rated loans
Loans	142,894	101,375
Lease Financing Receivables
Risk category of rated loans
Year One	2,638	1,117
Year Two	839	3,663
Year Three	2,641	1,814
Year Four	1,264	2,847
Prior	1,255	689
Loans	8,637	10,130
Lease Financing Receivables | Pass
Risk category of rated loans
Year One	2,638	1,117
Year Two	839	3,663
Year Three	2,641	1,814
Year Four	1,264	2,847
Prior	1,255	689
Loans	8,637	10,130
Lease Financing Receivables | Traditional Banking
Risk category of rated loans
Loans	8,637	10,130
Consumer
Risk category of rated loans
Year One	978	425
Year Two	417	13,668
Year Three	4,716	8,612
Year Four	4,387	7,354
Prior	5,962	8,865
Revolving Loans Amortized Cost Basis	14,613	14,326
Loans	31,073	53,250
Consumer | Pass
Risk category of rated loans
Year One	978	425
Year Two	417	13,636
Year Three	4,694	8,563
Year Four	4,326	7,125
Prior	5,768	8,648
Revolving Loans Amortized Cost Basis	14,613	14,321
Loans	30,796	52,718
Consumer | Special Mention
Risk category of rated loans
Prior		5
Loans		5
Consumer | Substandard
Risk category of rated loans
Year Two		32
Year Three	22	49
Year Four	61	229
Prior	194	212
Revolving Loans Amortized Cost Basis		5
Loans	277	527
Consumer | Credit cards | Traditional Banking
Risk category of rated loans
Loans	14,510	14,196
Consumer | Overdrafts | Traditional Banking
Risk category of rated loans
Loans	683	587
Consumer | Automobile loans | Traditional Banking
Risk category of rated loans
Loans	14,448	30,300
Consumer | Other consumer | Traditional Banking
Risk category of rated loans
Loans	1,432	8,167
Warehouse lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	850,550	962,796
Loans	850,550	962,796
Warehouse lines of credit | Pass
Risk category of rated loans
Revolving Loans Amortized Cost Basis	850,550	962,796
Loans	850,550	962,796
Warehouse lines of credit | Core Banking Activities
Risk category of rated loans
Loans	850,550	962,796
Tax Refund Solution
Risk category of rated loans
Revolving Loans Amortized Cost Basis	50,987	23,765
Loans	50,987	23,765
Tax Refund Solution | Pass
Risk category of rated loans
Revolving Loans Amortized Cost Basis	50,987	23,765
Loans	50,987	23,765
Tax Refund Solution | Other TRS loans | Republic Processing Group
Risk category of rated loans
Loans	50,987	23,765
Republic Credit Solution
Risk category of rated loans
Year One	5,524	27,683
Year Two	3,409	5,704
Year Three	1,642	2,485
Year Four	869	1,232
Prior	3,699	19,095
Revolving Loans Amortized Cost Basis	77,923	54,694
Loans	93,066	110,893
Republic Credit Solution | Pass
Risk category of rated loans
Year One	5,524	27,683
Year Two	3,409	5,704
Year Three	1,642	2,485
Year Four	869	1,232
Prior	3,699	19,095
Revolving Loans Amortized Cost Basis	77,544	54,348
Loans	92,687	110,547
Republic Credit Solution | Substandard
Risk category of rated loans
Revolving Loans Amortized Cost Basis	379	346
Loans	$ 379	346
Republic Credit Solution | Line of credit and credit card | Minimum
Risk category of rated loans
Percentage of loan receivable held for sale (as a percent)	90.00%
Interest retained (as a percent)	5.00%
Republic Credit Solution | Line of credit and credit card | Maximum
Risk category of rated loans
Percentage of loan receivable held for sale (as a percent)	95.00%
Interest retained (as a percent)	10.00%
Republic Credit Solution | Republic Processing Group
Risk category of rated loans
Loans	$ 93,066	$ 110,893