LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - DELINQUENT LOANS (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Aging or recorded investments in loans
Total Loans Delinquent	$ 16,163	$ 8,958
Total Loans Not Delinquent	3,694,213	3,801,820
Carrying value of loans	$ 3,710,376	$ 3,810,778
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.44%	0.24%
30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 12,914	$ 4,400
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.35%	0.12%
60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 888	$ 912
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.02%	0.02%
90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 2,361	$ 3,646
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.06%	0.10%
Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	$ 5,952	$ 6,821
Total Loans Not Delinquent	3,661,717	3,765,010
Carrying value of loans	3,667,669	3,771,831
Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	3,056	2,649
Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	657	608
Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	2,239	3,564
Republic Processing Group
Aging or recorded investments in loans
Total Loans Delinquent	10,211	2,137
Total Loans Not Delinquent	32,496	36,810
Carrying value of loans	42,707	38,947
Republic Processing Group | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	9,858	1,751
Republic Processing Group | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	231	304
Republic Processing Group | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	122	82
Republic Processing Group | Easy Advances
Aging or recorded investments in loans
Total Loans Delinquent	8,350
Total Loans Not Delinquent	2,322
Carrying value of loans	10,672
Republic Processing Group | Easy Advances | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	8,350
Republic Processing Group | Republic Credit Solutions
Aging or recorded investments in loans
Total Loans Delinquent	1,861	2,137
Total Loans Not Delinquent	30,160	30,115
Carrying value of loans	32,021	32,252
Republic Processing Group | Republic Credit Solutions | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1,508	1,751
Republic Processing Group | Republic Credit Solutions | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	231	304
Republic Processing Group | Republic Credit Solutions | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	122	82
Residential Real Estate - Owner Occupied | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	3,888	4,554
Total Loans Not Delinquent	965,817	995,594
Carrying value of loans	969,705	1,000,148
Residential Real Estate - Owner Occupied | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	2,205	1,696
Residential Real Estate - Owner Occupied | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	420	337
Residential Real Estate - Owner Occupied | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1,263	2,521
Residential Real Estate - Owner Occupied - Correspondent | Core Banking Activities
Aging or recorded investments in loans
Total Loans Not Delinquent	141,375	149,028
Carrying value of loans	141,375	149,028
Residential Real Estate - Non Owner Occupied | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	40	46
Total Loans Not Delinquent	164,702	156,559
Carrying value of loans	164,742	156,605
Residential Real Estate - Non Owner Occupied | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	5
Residential Real Estate - Non Owner Occupied | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	35	46
Commercial Real Estate | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	641	425
Total Loans Not Delinquent	1,048,552	1,060,071
Carrying value of loans	1,049,193	1,060,496
Commercial Real Estate | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	140	8
Commercial Real Estate | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	85
Commercial Real Estate | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	416	417
Construction & land development | Core Banking Activities
Aging or recorded investments in loans
Total Loans Not Delinquent	130,766	119,650
Carrying value of loans	130,766	119,650
Commercial & Industrial | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent		342
Total Loans Not Delinquent	270,652	258,684
Carrying value of loans	270,652	259,026
Commercial & Industrial | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent		342
Commercial & Industrial | Republic Processing Group
Aging or recorded investments in loans
Total Loans Not Delinquent	14	6,695
Carrying value of loans	14	6,695
Lease Financing Receivables | Core Banking Activities
Aging or recorded investments in loans
Total Loans Not Delinquent	13,853	13,614
Carrying value of loans	13,853	13,614
Warehouse lines of credit | Core Banking Activities
Aging or recorded investments in loans
Total Loans Not Delinquent	495,165	585,439
Carrying value of loans	495,165	585,439
Home equity lines of credit | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	907	970
Total Loans Not Delinquent	340,704	340,315
Carrying value of loans	341,611	341,285
Home equity lines of credit | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	440	316
Home equity lines of credit | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	25	160
Home equity lines of credit | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	442	494
Consumer: Credit cards | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	30	18
Total Loans Not Delinquent	14,614	13,396
Carrying value of loans	14,644	13,414
Consumer: Credit cards | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	16	14
Consumer: Credit cards | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	14	4
Consumer: Overdrafts | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	145	161
Total Loans Not Delinquent	641	642
Carrying value of loans	786	803
Consumer: Overdrafts | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	142	159
Consumer: Overdrafts | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	3	1
Consumer: Overdrafts | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent		1
Consumer: Automobile loan | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	22
Total Loans Not Delinquent	55,940	52,579
Carrying value of loans	55,962	52,579
Consumer: Automobile loan | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	22
Other consumer | Core Banking Activities
Aging or recorded investments in loans
Total Loans Delinquent	279	305
Total Loans Not Delinquent	18,936	19,439
Carrying value of loans	19,215	19,744
Other consumer | Core Banking Activities | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	86	114
Other consumer | Core Banking Activities | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	110	106
Other consumer | Core Banking Activities | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 83	$ 85