LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Allowance for loan losses
Loans and Leases Receivable, Net Amount	$ 2,509,192	$ 2,543,803
Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	9,899	13,693
Other Collateral Loans
Allowance for loan losses
Loans and Leases Receivable, Net Amount	292	607
Construction and land development | Total commercial loans
Allowance for loan losses
Loans and Leases Receivable, Net Amount	56,263
Construction and land development | Total commercial loans | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount		259
Commercial real estate owner occupied | Total commercial real estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	257,122
Commercial real estate owner occupied | Total commercial real estate | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	783	3,441
Commercial real estate non-owner occupied | Total commercial real estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	887,092
Commercial real estate non-owner occupied | Total commercial real estate | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	622	383
Tax exempt
Allowance for loan losses
Loans and Leases Receivable, Net Amount	41,280
Commercial and industrial | Total commercial and industrial
Allowance for loan losses
Loans and Leases Receivable, Net Amount	307,112
Commercial and industrial | Total commercial and industrial | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	385	625
Commercial and industrial | Total commercial and industrial | Other Collateral Loans
Allowance for loan losses
Loans and Leases Receivable, Net Amount	292	607
Residential mortgages | Total residential real estate | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	6,835	7,432
Home equity | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	1,269	1,493
Other consumer | Total consumer | Real Estate
Allowance for loan losses
Loans and Leases Receivable, Net Amount	$ 5	$ 60