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LOANS (Total Loans Outstanding) (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 4,000,085 | $ 3,916,326 |  |  |  |
Percentage of Subtotal | 100.00% | 100.00% |  |  |  |
Less: Allowance for loan losses | $ (50,564) | $ (48,453) | $ (49,562) | $ (47,706) | $ (45,627) | $ (47,121)
Net deferred loan fees | (1,467) | (1,581) |  |  |  |
Loans, net | 3,948,054 | 3,866,292 |  |  |  |
Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 3,524,398 | $ 3,441,184 |  |  |  |
Percentage of Total commercial loans | 88.10% | 87.90% |  |  |  |
Other consumer loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 86,996 | $ 86,064 |  |  |  |
Consumer loan open-ended revolving line |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 475,687 | $ 475,142 |  |  |  |
Working Capital Lines of Credit Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Total consumer loans | 11.90% | 12.10% |  |  |  |
Commercial and Industrial Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Less: Allowance for loan losses | $ (25,024) | $ (22,518) | (24,030) | (22,524) | (20,725) | (21,097)
Commercial and Industrial Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 1,450,325 | $ 1,405,379 |  |  |  |
Percentage of Total commercial loans | 36.20% | 35.90% |  |  |  |
Commercial and Industrial Loans | Working Capital Lines of Credit Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 755,090 | $ 690,620 |  |  |  |
Percentage of Total commercial loans | 18.90% | 17.60% |  |  |  |
Commercial and Industrial Loans | Non-working Capital Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 695,235 | $ 714,759 |  |  |  |
Percentage of Total commercial loans | 17.30% | 18.30% |  |  |  |
Commercial Real Estate and Multi-family Residential Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 1,655,511 | $ 1,569,635 |  |  |  |
Percentage of Total commercial loans | 41.40% | 40.10% |  |  |  |
Commercial Real Estate and Multi-family Residential Loans | Construction and Land Development Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 321,550 | $ 266,805 |  |  |  |
Percentage of Total commercial loans | 8.00% | 6.80% |  |  |  |
Commercial Real Estate and Multi-family Residential Loans | Owner Occupied Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 557,115 | $ 586,325 |  |  |  |
Percentage of Total commercial loans | 13.90% | 15.00% |  |  |  |
Commercial Real Estate and Multi-family Residential Loans | Nonowner Occupied Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 533,880 | $ 520,901 |  |  |  |
Percentage of Total commercial loans | 13.40% | 13.30% |  |  |  |
Commercial Real Estate and Multi-family Residential Loans | Multifamily Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 242,966 | $ 195,604 |  |  |  |
Percentage of Total commercial loans | 6.10% | 5.00% |  |  |  |
Agri-business and Agricultural Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Less: Allowance for loan losses | $ (3,906) | $ (4,305) | $ (4,146) | $ (4,585) | $ (4,848) | $ (4,920)
Agri-business and Agricultural Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 314,478 | $ 370,513 |  |  |  |
Percentage of Total commercial loans | 7.90% | 9.50% |  |  |  |
Agri-business and Agricultural Loans | Loans Secured By Farmland | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 148,883 | $ 177,503 |  |  |  |
Percentage of Total commercial loans | 3.70% | 4.60% |  |  |  |
Agri-business and Agricultural Loans | Loans For Agricultural Production | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 165,595 | $ 193,010 |  |  |  |
Percentage of Total commercial loans | 4.20% | 4.90% |  |  |  |
Other Commercial Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Percentage of Total consumer loans | 2.20% | 2.20% |  |  |  |
Other Commercial Loans | Commercial Portfolio Segment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 104,084 | $ 95,657 |  |  |  |
Percentage of Total commercial loans | 2.60% | 2.40% |  |  |  |
Total Consumer 1 To 4 Family Mortgage Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 388,691 | $ 389,078 |  |  |  |
Percentage of Total commercial loans | 9.70% | 9.90% |  |  |  |
Total Consumer 1 To 4 Family Mortgage Loans | Closed End First Mortgage Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 187,863 | $ 185,822 |  |  |  |
Percentage of Total commercial loans | 4.70% | 4.70% |  |  |  |
Total Consumer 1 To 4 Family Mortgage Loans | Open End And Junior Lien Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 188,558 | $ 187,030 |  |  |  |
Percentage of Total commercial loans | 4.70% | 4.80% |  |  |  |
Total Consumer 1 To 4 Family Mortgage Loans | Residential Construction and Land Development Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Commercial And Consumer Loans | $ 12,270 | $ 16,226 |  |  |  |
Percentage of Total commercial loans | 0.30% | 0.40% |  |  |  |

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