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ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment
Total ending loans balance	$ 4,649,156	$ 4,065,828
Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	93,912	112,166
Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		98,366
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	1,784,926	1,426,826
Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	626,099	709,983
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	1,158,827	716,843
Commercial Real Estate and Multi-family Residential Loans
Financing Receivable, Recorded Investment
Total ending loans balance	1,892,572	1,670,840
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	361,664	286,534
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	647,574	573,359
Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	579,050	570,687
Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	304,284	240,260
Agri-business and Agricultural Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	429,662	379,631
Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	195,363	174,389
Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	234,299	205,242
Consumer 1-4 Family Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	344,699	377,999
Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	11,962	12,922
Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	167,501	176,873
Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	165,236	188,204
Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	11,962	12,922
Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	103,385
Pass
Financing Receivable, Recorded Investment
Total ending loans balance	3,997,245	3,490,863
Pass | Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	93,912	112,166
Pass | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		27,250
Pass | Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	535,071	631,728
Pass | Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	1,111,989	673,370
Pass | Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	361,664	286,534
Pass | Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	608,845	535,496
Pass | Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	547,790	569,315
Pass | Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	282,031	240,260
Pass | Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	183,983	165,005
Pass | Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	185,875	191,489
Pass | Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	0
Pass | Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	40,682	47,405
Pass | Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	8,424	10,845
Pass | Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		0
Pass | Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	36,979
Special Mention
Financing Receivable, Recorded Investment
Total ending loans balance	251,891	96,608
Special Mention | Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Special Mention | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		0
Special Mention | Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	81,095	40,551
Special Mention | Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	26,523	18,782
Special Mention | Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Special Mention | Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	31,355	14,804
Special Mention | Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	31,260	781
Special Mention | Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	22,253	0
Special Mention | Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	10,728	7,952
Special Mention | Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	48,424	13,738
Special Mention | Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	0
Special Mention | Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Special Mention | Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Special Mention | Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		0
Special Mention | Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	253
Substandard
Financing Receivable, Recorded Investment
Total ending loans balance	34,264	84,562
Substandard | Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Substandard | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		17
Substandard | Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	9,718	37,278
Substandard | Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	14,820	19,381
Substandard | Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Substandard | Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	7,374	23,059
Substandard | Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	591
Substandard | Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Substandard | Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	652	1,432
Substandard | Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	0	15
Substandard | Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	0
Substandard | Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	1,695	1,976
Substandard | Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	5	762
Substandard | Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		51
Substandard | Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0
Doubtful
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		0
Doubtful | Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	0
Doubtful | Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Doubtful | Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		0
Doubtful | Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0
Not Rated
Financing Receivable, Recorded Investment
Total ending loans balance	365,756	393,795
Not Rated | Other Commercial Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		71,099
Not Rated | Commercial and Industrial Loans [Member] | Working Capital Lines of Credit Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	215	426
Not Rated | Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	5,495	5,310
Not Rated | Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production
Financing Receivable, Recorded Investment
Total ending loans balance	0	0
Not Rated | Consumer 1-4 Family Mortgage Loans [Member] | Home equity mortgage open-ended revolving lines
Financing Receivable, Recorded Investment
Total ending loans balance	11,962
Not Rated | Consumer 1-4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	125,124	127,492
Not Rated | Consumer 1-4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	156,807	176,597
Not Rated | Consumer 1-4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance		$ 12,871
Not Rated | Consumer 1-4 Family Mortgage Loans [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment
Total ending loans balance	$ 66,153

X

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+ References

No definition available.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524

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