LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	$ 3,533	$ 5,829
Total Loans	5,941,098	5,671,462	$ 5,510,385
Nonaccrual	10,861	11,936
Current	5,837,731	5,542,840
Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	67,170	73,737	87,841
Current	60,224	64,455
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	13,514	27,787
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	8,289	9,333
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	116	128
Total Loans	765,997	749,720	671,234
Nonaccrual	1,604	2,113
Current	757,685	737,958
Construction and Land Development [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	5,013	5,986	8,397
Current	4,649	5,376
Construction and Land Development [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	402	3,155
Construction and Land Development [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,177	380
Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	439	103
Total Loans	831,880	860,086	874,582
Nonaccrual	1,661	3,904
Current	808,176	826,859
Commercial Real Estate - Owner Occupied [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	20,692	27,388	29,838
Current	18,099	24,837
Commercial Real Estate - Owner Occupied [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	912	1,714
Commercial Real Estate - Owner Occupied [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	118
Commercial Real Estate - Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	723	723
Total Loans	1,370,745	1,270,480	1,217,646
Nonaccrual	0	100
Current	1,351,458	1,255,367
Commercial Real Estate - Non-Owner Occupied [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	18,297	13,519	16,982
Current	17,331	12,562
Commercial Real Estate - Non-Owner Occupied [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	267	771
Commercial Real Estate - Non-Owner Occupied [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Multifamily Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	0	272
Total Loans	337,723	322,528	316,474
Nonaccrual	0	0
Current	335,631	320,701
Multifamily Real Estate [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,092	1,555	3,004
Current	2,092	1,555
Multifamily Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Multifamily Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	117	124
Total Loans	469,054	435,365	426,193
Nonaccrual	263	429
Current	464,794	431,916
Commercial & Industrial [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,354	1,813	2,940
Current	1,205	1,583
Commercial & Industrial [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,464	1,056
Commercial & Industrial [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	62	27
Residential 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	1,302	3,638
Total Loans	992,457	978,469	991,592
Nonaccrual	5,448	3,563
Current	957,393	928,312
Residential 1-4 Family [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	17,805	21,159	24,157
Current	15,578	17,093
Residential 1-4 Family [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	5,476	15,023
Residential 1-4 Family [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	5,033	6,774
Auto [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	144	60
Total Loans	244,575	234,061	216,420
Nonaccrual	140	192
Current	242,632	231,264
Auto [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0	0
Auto [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,282	2,312
Auto [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	377	233
HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	642	762
Total Loans	519,196	516,726	512,123
Nonaccrual	1,495	1,348
Current	512,967	509,124
HELOC [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,517	1,791	1,840
Current	870	923
HELOC [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,347	2,589
HELOC [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,228	1,112
Consumer and all other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days and still Accruing	50	19
Total Loans	409,471	304,027	284,121
Nonaccrual	250	287
Current	406,995	301,339
Consumer and all other [Member] | Purchased Impaired [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	400	526	$ 683
Current	400	526
Consumer and all other [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,364	1,167
Consumer and all other [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 412	$ 689