LOANS AND ALLOWANCE FOR CREDIT LOSSES - RISK CATEGORY (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Risk category of rated loans
2020	$ 202,758
2019	952,390
2018	522,796
2017	469,308
Prior	1,094,981
Revolving Loans Amortized Cost Basis	1,230,915
Revolving Loans Converted To Term Loans	42,451
Loans	4,515,599	$ 4,433,151
Consumer loans receivable held for investment	827	998
Residential Real Estate - Owner Occupied
Risk category of rated loans
2020	23,146
2019	190,180
2018	125,266
2017	100,710
Prior	477,224
Loans	916,526
Residential Real Estate - Non Owner Occupied
Risk category of rated loans
2020	15,155
2019	76,919
2018	55,846
2017	52,775
Prior	55,797
Loans	256,492
Commercial Real Estate
Risk category of rated loans
2020	53,780
2019	344,753
2018	207,479
2017	227,467
Prior	444,860
Revolving Loans Converted To Term Loans	42,451
Loans	1,320,790
Construction & land development
Risk category of rated loans
2020	24,748
2019	73,678
2018	37,365
2017	12,654
Prior	14,951
Loans	163,396
Commercial & industrial
Risk category of rated loans
2020	45,621
2019	199,806
2018	57,509
2017	56,537
Prior	68,176
Revolving Loans Amortized Cost Basis	18,298
Loans	445,947
Lease Financing Receivables
Risk category of rated loans
2020	663
2019	5,196
2018	2,169
2017	3,396
Prior	1,252
Loans	12,676
Warehouse lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	850,454
Loans	850,454
Home equity lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	282,809
Loans	282,809
Consumer
Risk category of rated loans
2020	9,803
2019	51,501
2018	33,025
2017	13,891
Prior	14,180
Revolving Loans Amortized Cost Basis	15,768
Loans	138,168
Other TRS loans
Risk category of rated loans
2020	26,242
Revolving Loans Amortized Cost Basis	373
Loans	26,615
Republic Credit Solutions
Risk category of rated loans
2020	3,600
2019	10,357
2018	4,137
2017	1,878
Prior	18,541
Revolving Loans Amortized Cost Basis	63,213
Loans	101,726
Pass
Risk category of rated loans
2020	197,808
2019	945,140
2018	521,288
2017	465,598
Prior	1,061,930
Revolving Loans Amortized Cost Basis	1,226,145
Revolving Loans Converted To Term Loans	42,451
Loans	4,460,360	2,648,380
Pass | Residential Real Estate - Owner Occupied
Risk category of rated loans
2020	23,146
2019	188,769
2018	124,184
2017	98,440
Prior	453,447
Loans	887,986
Pass | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
2020	14,855
2019	76,380
2018	55,846
2017	52,775
Prior	54,902
Loans	254,758
Pass | Commercial Real Estate
Risk category of rated loans
2020	50,641
2019	342,515
2018	207,300
2017	226,233
Prior	437,149
Revolving Loans Converted To Term Loans	42,451
Loans	1,306,289
Pass | Construction & land development
Risk category of rated loans
2020	24,748
2019	71,146
2018	37,365
2017	12,654
Prior	14,951
Loans	160,864
Pass | Commercial & industrial
Risk category of rated loans
2020	44,110
2019	199,316
2018	57,324
2017	56,537
Prior	67,784
Revolving Loans Amortized Cost Basis	16,792
Loans	441,863
Pass | Lease Financing Receivables
Risk category of rated loans
2020	663
2019	5,196
2018	2,169
2017	3,396
Prior	1,252
Loans	12,676
Pass | Warehouse lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	850,454
Loans	850,454
Pass | Home equity lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	280,340
Loans	280,340
Pass | Consumer
Risk category of rated loans
2020	9,803
2019	51,461
2018	32,963
2017	13,685
Prior	13,904
Revolving Loans Amortized Cost Basis	15,768
Loans	137,584
Pass | Other TRS loans
Risk category of rated loans
2020	26,242
Revolving Loans Amortized Cost Basis	184
Loans	26,426
Pass | Republic Credit Solutions
Risk category of rated loans
2020	3,600
2019	10,357
2018	4,137
2017	1,878
Prior	18,541
Revolving Loans Amortized Cost Basis	62,607
Loans	101,120
Special Mention
Risk category of rated loans
2020	1,678
2019	2,414
2018	227
2017	1,633
Prior	14,042
Revolving Loans Amortized Cost Basis	768
Loans	20,762	21,754
Special Mention | Residential Real Estate - Owner Occupied
Risk category of rated loans
2018	48
2017	1,633
Prior	10,600
Loans	12,281
Special Mention | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
2020	300
Prior	160
Loans	460
Special Mention | Commercial Real Estate
Risk category of rated loans
2019	75
2018	179
Prior	3,211
Loans	3,465
Special Mention | Construction & land development
Risk category of rated loans
2019	2,339
Loans	2,339
Special Mention | Commercial & industrial
Risk category of rated loans
2020	1,378
Prior	58
Revolving Loans Amortized Cost Basis	640
Loans	2,076
Special Mention | Home equity lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	128
Loans	128
Special Mention | Consumer
Risk category of rated loans
Prior	13
Loans	13
Substandard
Risk category of rated loans
2020	3,272
2019	4,836
2018	1,281
2017	2,077
Prior	19,009
Revolving Loans Amortized Cost Basis	4,002
Loans	34,477	33,297
Substandard | Residential Real Estate - Owner Occupied
Risk category of rated loans
2019	1,411
2018	1,034
2017	637
Prior	13,177
Loans	16,259
Substandard | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
2019	539
Prior	735
Loans	1,274
Substandard | Commercial Real Estate
Risk category of rated loans
2020	3,139
2019	2,163
2017	1,234
Prior	4,500
Loans	11,036
Substandard | Construction & land development
Risk category of rated loans
2019	193
Loans	193
Substandard | Commercial & industrial
Risk category of rated loans
2020	133
2019	490
2018	185
Prior	334
Revolving Loans Amortized Cost Basis	866
Loans	2,008
Substandard | Home equity lines of credit
Risk category of rated loans
Revolving Loans Amortized Cost Basis	2,341
Loans	2,341
Substandard | Consumer
Risk category of rated loans
2019	40
2018	62
2017	206
Prior	263
Loans	571
Substandard | Other TRS loans
Risk category of rated loans
Revolving Loans Amortized Cost Basis	189
Loans	189
Substandard | Republic Credit Solutions
Risk category of rated loans
Revolving Loans Amortized Cost Basis	606
Loans	606
PCI Loans - Group 1
Risk category of rated loans
Loans		797
PCI Loans - Substandard
Risk category of rated loans
Loans		1,289
Rated Loans
Risk category of rated loans
Loans		2,705,517
Core Banking Activities
Risk category of rated loans
Loans	4,387,258	4,313,389
Core Banking Activities | Warehouse lines of credit
Risk category of rated loans
Loans	850,454	717,458
Core Banking Activities | Pass
Risk category of rated loans
Loans		2,648,380
Core Banking Activities | Pass | Warehouse lines of credit
Risk category of rated loans
Loans		717,458
Core Banking Activities | Special Mention
Risk category of rated loans
Loans		21,754
Core Banking Activities | Substandard
Risk category of rated loans
Loans		32,889
Core Banking Activities | PCI Loans - Group 1
Risk category of rated loans
Loans		797
Core Banking Activities | PCI Loans - Substandard
Risk category of rated loans
Loans		1,289
Core Banking Activities | Rated Loans
Risk category of rated loans
Loans		2,705,109
Core Banking Activities | Rated Loans | Warehouse lines of credit
Risk category of rated loans
Loans		717,458
Traditional Banking
Risk category of rated loans
Loans	3,536,804	3,595,931
Traditional Banking | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans	916,526	949,568
Traditional Banking | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
Loans	256,492	258,803
Traditional Banking | Commercial Real Estate
Risk category of rated loans
Loans	1,320,790	1,303,000
Traditional Banking | Construction & land development
Risk category of rated loans
Loans	163,396	159,702
Traditional Banking | Commercial & industrial
Risk category of rated loans
Loans	445,947	477,236
Traditional Banking | Lease Financing Receivables
Risk category of rated loans
Loans	12,676	14,040
Traditional Banking | Home equity lines of credit
Risk category of rated loans
Loans	282,809	293,186
Traditional Banking | Consumer: Credit cards
Risk category of rated loans
Loans	15,608	17,836
Traditional Banking | Consumer: Overdrafts
Risk category of rated loans
Loans	758	1,522
Traditional Banking | Consumer: Automobile loan
Risk category of rated loans
Loans	46,837	52,923
Traditional Banking | Other consumer
Risk category of rated loans
Loans	74,965	68,115
Traditional Banking | Pass
Risk category of rated loans
Loans		1,930,922
Traditional Banking | Pass | Commercial Real Estate
Risk category of rated loans
Loans		1,286,623
Traditional Banking | Pass | Construction & land development
Risk category of rated loans
Loans		157,165
Traditional Banking | Pass | Commercial & industrial
Risk category of rated loans
Loans		473,094
Traditional Banking | Pass | Lease Financing Receivables
Risk category of rated loans
Loans		14,040
Traditional Banking | Special Mention
Risk category of rated loans
Loans		21,754
Traditional Banking | Special Mention | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans		12,153
Traditional Banking | Special Mention | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
Loans		487
Traditional Banking | Special Mention | Commercial Real Estate
Risk category of rated loans
Loans		4,623
Traditional Banking | Special Mention | Construction & land development
Risk category of rated loans
Loans		2,339
Traditional Banking | Special Mention | Commercial & industrial
Risk category of rated loans
Loans		2,152
Traditional Banking | Substandard
Risk category of rated loans
Loans		32,889
Traditional Banking | Substandard | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans		14,441
Traditional Banking | Substandard | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
Loans		1,285
Traditional Banking | Substandard | Commercial Real Estate
Risk category of rated loans
Loans		11,123
Traditional Banking | Substandard | Construction & land development
Risk category of rated loans
Loans		198
Traditional Banking | Substandard | Commercial & industrial
Risk category of rated loans
Loans		1,968
Traditional Banking | Substandard | Home equity lines of credit
Risk category of rated loans
Loans		3,276
Traditional Banking | Substandard | Consumer: Automobile loan
Risk category of rated loans
Loans		247
Traditional Banking | Substandard | Other consumer
Risk category of rated loans
Loans		351
Traditional Banking | PCI Loans - Group 1
Risk category of rated loans
Loans		797
Traditional Banking | PCI Loans - Group 1 | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans		140
Traditional Banking | PCI Loans - Group 1 | Commercial Real Estate
Risk category of rated loans
Loans		631
Traditional Banking | PCI Loans - Group 1 | Commercial & industrial
Risk category of rated loans
Loans		22
Traditional Banking | PCI Loans - Group 1 | Home equity lines of credit
Risk category of rated loans
Loans		4
Traditional Banking | PCI Loans - Substandard
Risk category of rated loans
Loans		1,289
Traditional Banking | PCI Loans - Substandard | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans		1,281
Traditional Banking | PCI Loans - Substandard | Home equity lines of credit
Risk category of rated loans
Loans		6
Traditional Banking | PCI Loans - Substandard | Other consumer
Risk category of rated loans
Loans		2
Traditional Banking | Rated Loans
Risk category of rated loans
Loans		1,987,651
Traditional Banking | Rated Loans | Residential Real Estate - Owner Occupied
Risk category of rated loans
Loans		28,015
Traditional Banking | Rated Loans | Residential Real Estate - Non Owner Occupied
Risk category of rated loans
Loans		1,772
Traditional Banking | Rated Loans | Commercial Real Estate
Risk category of rated loans
Loans		1,303,000
Traditional Banking | Rated Loans | Construction & land development
Risk category of rated loans
Loans		159,702
Traditional Banking | Rated Loans | Commercial & industrial
Risk category of rated loans
Loans		477,236
Traditional Banking | Rated Loans | Lease Financing Receivables
Risk category of rated loans
Loans		14,040
Traditional Banking | Rated Loans | Home equity lines of credit
Risk category of rated loans
Loans		3,286
Traditional Banking | Rated Loans | Consumer: Automobile loan
Risk category of rated loans
Loans		247
Traditional Banking | Rated Loans | Other consumer
Risk category of rated loans
Loans		353
Republic Processing Group
Risk category of rated loans
Loans	128,341	119,762
Republic Processing Group | Easy Advances
Risk category of rated loans
Loans	26,242
Republic Processing Group | Other TRS loans
Risk category of rated loans
Loans	373	14,365
Republic Processing Group | Republic Credit Solutions
Risk category of rated loans
Loans	$ 101,726	105,397
Republic Processing Group | Substandard
Risk category of rated loans
Loans		408
Republic Processing Group | Substandard | Other TRS loans
Risk category of rated loans
Loans		53
Republic Processing Group | Substandard | Republic Credit Solutions
Risk category of rated loans
Loans		355
Republic Processing Group | Rated Loans
Risk category of rated loans
Loans		408
Republic Processing Group | Rated Loans | Other TRS loans
Risk category of rated loans
Loans		53
Republic Processing Group | Rated Loans | Republic Credit Solutions
Risk category of rated loans
Loans		$ 355