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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - SBA PPP Loans by Round (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Apr. 01, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans			$ 1,201,262	$ 1,246,889	$ 1,189,425
SBA PPP loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans			118,931	123,702
Net Deferred Fee Income			3,000	3,000
SBA PPP loans | Subsequent Event
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans	$ 127,000	$ 119,000
Net Deferred Fee Income	4,700	3,900
SBA PPP loans | SBA PPP Loans - Round 1
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans			72,000	124,000
Net Deferred Fee Income			1,300	3,000
SBA PPP loans | SBA PPP Loans - Round 1 | Subsequent Event
Financing Receivable, Allowance for Credit Loss [Line Items]
Net Deferred Fee Income		$ 900
SBA PPP loans | SBA PPP Loans - Round 2
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans			47,000	0
Net Deferred Fee Income			$ 1,700	$ 0
SBA PPP loans | SBA PPP Loans - Round 2 | Subsequent Event
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans	8,000
Net Deferred Fee Income	$ 800

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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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.

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