LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - DELINQUENT LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Aging or recorded investments in loans
Total Loans Delinquent	$ 8,958	$ 11,731
Total Loans Not Delinquent	3,801,820	3,314,879
Carrying value of loans	$ 3,810,778	$ 3,326,610
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.24%	0.35%
30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 4,400	$ 3,088
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.12%	0.09%
60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 912	$ 1,107
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.02%	0.03%
90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 3,646	$ 7,536
Delinquent acquired bank loans to total acquired bank loans (as a percent)	0.10%	0.23%
Residential Real Estate - Owner Occupied
Aging or recorded investments in loans
Total Loans Delinquent	$ 4,554	$ 6,882
Total Loans Not Delinquent	995,594	1,075,052
Carrying value of loans	1,000,148	1,081,934
Residential Real Estate - Owner Occupied | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1,696	1,960
Residential Real Estate - Owner Occupied | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	337	1,044
Residential Real Estate - Owner Occupied | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	2,521	3,878
Owner Occupied - Correspondent
Aging or recorded investments in loans
Total Loans Not Delinquent	149,028	249,344
Carrying value of loans	149,028	249,344
Residential Real Estate - Non Owner Occupied
Aging or recorded investments in loans
Total Loans Delinquent	46	53
Total Loans Not Delinquent	156,559	116,241
Carrying value of loans	156,605	116,294
Residential Real Estate - Non Owner Occupied | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent		14
Residential Real Estate - Non Owner Occupied | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	46	39
Commercial Real Estate
Aging or recorded investments in loans
Total Loans Delinquent	425	1,111
Total Loans Not Delinquent	1,023,556	823,776
Carrying value of loans	1,023,981	824,887
Commercial Real Estate | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	8	178
Commercial Real Estate | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	417	933
Commercial real estate - purchased whole loans
Aging or recorded investments in loans
Total Loans Not Delinquent	36,515	35,674
Carrying value of loans	36,515	35,674
Construction & land development
Aging or recorded investments in loans
Total Loans Delinquent		1,500
Total Loans Not Delinquent	119,650	65,000
Carrying value of loans	119,650	66,500
Construction & land development | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent		1,500
Commercial & Industrial
Aging or recorded investments in loans
Total Loans Delinquent	342	299
Total Loans Not Delinquent	265,379	229,422
Carrying value of loans	265,721	229,721
Commercial & Industrial | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	342	299
Lease Financing Receivables
Aging or recorded investments in loans
Total Loans Not Delinquent	13,614	8,905
Carrying value of loans	13,614	8,905
Warehouse lines of credit
Aging or recorded investments in loans
Total Loans Not Delinquent	585,439	386,729
Carrying value of loans	585,439	386,729
Home equity lines of credit
Aging or recorded investments in loans
Total Loans Delinquent	970	1,393
Total Loans Not Delinquent	340,315	287,801
Carrying value of loans	341,285	289,194
Home equity lines of credit | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	316	206
Home equity lines of credit | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	160	1
Home equity lines of credit | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	494	1,186
Consumer: Republic Processing Group Loans
Aging or recorded investments in loans
Total Loans Delinquent	2,137	246
Total Loans Not Delinquent	30,115	6,958
Carrying value of loans	32,252	7,204
Consumer: Republic Processing Group Loans | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1,751	246
Consumer: Republic Processing Group Loans | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	304
Consumer: Republic Processing Group Loans | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	82
Consumer: Credit cards
Aging or recorded investments in loans
Total Loans Delinquent	18	12
Total Loans Not Delinquent	13,396	11,056
Carrying value of loans	13,414	11,068
Consumer: Credit cards | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	14	10
Consumer: Credit cards | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	4	2
Consumer: Overdrafts
Aging or recorded investments in loans
Total Loans Delinquent	161	133
Total Loans Not Delinquent	642	552
Carrying value of loans	803	685
Consumer: Overdrafts | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	159	133
Consumer: Overdrafts | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1
Consumer: Overdrafts | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	1
Consumer: Automobile loan
Aging or recorded investments in loans
Total Loans Not Delinquent	52,579	6,473
Carrying value of loans	52,579	6,473
Other consumer
Aging or recorded investments in loans
Total Loans Delinquent	305	102
Total Loans Not Delinquent	19,439	11,896
Carrying value of loans	19,744	11,998
Other consumer | 30 - 59 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	114	42
Other consumer | 60 - 89 Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	106	$ 60
Other consumer | 90 + Days Delinquent
Aging or recorded investments in loans
Total Loans Delinquent	$ 85