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Number of Portfolio Concentration Industries

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SBA PPP Loans, Total Originations

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SBA PPP Loans, Total Originations, Number of Contracts

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Unrealized gain (loss) on loans held for sale

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Number of financing receivables that have been modified by troubled debt restructurings.

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

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Describes transactions with related parties, including directors, officers and key employees, including: (1) the aggregate amount of related party loans if they exceed 5 percent of shareholders' equity at the balance sheet date or at any time during the latest fiscal year, (2) an analysis of activity with respect to such loans for the latest fiscal year (i.e., beginning balance, new loans, repayments, other changes and ending balance), (3) the aggregate amount of any significant nonaccrual of interest, past due amounts, or restructured or potential problem (including additional information necessary to understand the impact on the financial statements), and (4) any related party loans not made in the ordinary course of business.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan	Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Related Parties, Description			At September 30, 2020 and December 31, 2019, outstanding loans to certain officers, directors and their associated companies was less than 5% of the Company's shareholders' equity.		At September 30, 2020 and December 31, 2019, outstanding loans to certain officers, directors and their associated companies was less than 5% of the Company's shareholders' equity.
Other industry exposures			0
Interest lost on nonaccrual loans	$ 85	$ 106	$ 251	$ 330
Recorded Investment	$ 3,405		$ 3,405		$ 3,629
Financing Receivable, Modifications, Number of Contracts \| loan	0	0	0	0
Loans modified \| loan	0	0	0	0
Proceeds from the sale of mortgage loans			$ 460,130	$ 168,394
Gain on sale of mortgage loans			(10,385)	(3,928)
Loans held for sale, at fair value (book value of $37,301 and $11,915, respectively)	$ 37,935		37,935		11,854
FHLB advances, general debt obligations, pledged collateral	1,300,000		$ 1,300,000		1,400,000
SBA PPP Loans, Total Originations, Number of Loans \| loan			3,034
SBA PPP Loans, Total Originations			$ 244,800
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	1,700		1,700		1,300
Fixed Rate Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from the sale of mortgage loans	182,700	$ 86,900	449,700	164,500
Gain on sale of mortgage loans	(4,300)	(1,900)	(10,400)	(3,900)
Loans held for sale, at fair value (book value of $37,301 and $11,915, respectively)	37,300		37,300		11,900
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	107		107		123
Nonoperating Income (Expense) \| Fixed Rate Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain on sale of mortgage loans	$ 47,000	$ 205	(695)	$ 269
Unrealized gain (loss) on loans held for sale			$ 634		(61)
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Months	18		18
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Months	24		24
Non-Residential Building Operators Industry Sector \| Loan Concentration Risk \| Total Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk (percentage)			13.00%
Non-Residential Building Operators Industry Sector \| Loan Concentration Risk \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk (percentage)			32.00%
Performing \| Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 3,000		$ 3,000		3,000
Non-performing \| Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 454		$ 454		$ 636