LOANS - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Recorded Investment
Impaired loans without a valuation allowance	$ 28,889	$ 17,781
Impaired loans with a valuation allowance	15,991	19,267
Total impaired loans	44,880	37,048
Unpaid Principal Balance
Impaired loans without a valuation allowance	30,815	19,322
Impaired loans with a valuation allowance	16,544	19,699
Total impaired loans	47,359	39,021
Activity in the allowance for loan losses
Allowance for loan losses for impaired loans	1,161	1,258
Impaired loans
Average Recorded Investment	41,537	35,685	$ 42,770
Interest Income Recognized	1,995	1,799	2,281
Interest Income Recognized on Cash Basis	1,636	1,411	1,833
Additional funds committed to be advanced in connection with impaired loans	0
Residential
Recorded Investment
Impaired loans without a valuation allowance	11,610	11,518
Impaired loans with a valuation allowance	15,665	19,202
Unpaid Principal Balance
Impaired loans without a valuation allowance	12,140	12,054
Impaired loans with a valuation allowance	16,218	19,634
Activity in the allowance for loan losses
Allowance for loan losses for impaired loans	985	1,205
Impaired loans
Average Recorded Investment	29,708	32,186	38,931
Interest Income Recognized	1,694	1,764	2,146
Interest Income Recognized on Cash Basis	1,335	1,379	1,699
Commercial real estate
Recorded Investment
Impaired loans without a valuation allowance	530	2,502
Unpaid Principal Balance
Impaired loans without a valuation allowance	530	2,596
Impaired loans
Average Recorded Investment	643	744	78
Interest Income Recognized	10
Interest Income Recognized on Cash Basis	10
Commercial Construction
Recorded Investment
Impaired loans without a valuation allowance	11,244
Unpaid Principal Balance
Impaired loans without a valuation allowance	11,244
Impaired loans
Average Recorded Investment	5,622	26	132
Interest Income Recognized	237		13
Interest Income Recognized on Cash Basis	237		13
Commercial
Recorded Investment
Impaired loans without a valuation allowance	5,505	3,761
Impaired loans with a valuation allowance	326	65
Unpaid Principal Balance
Impaired loans without a valuation allowance	6,901	4,672
Impaired loans with a valuation allowance	326	65
Activity in the allowance for loan losses
Allowance for loan losses for impaired loans	176	53
Impaired loans
Average Recorded Investment	5,564	2,729	3,629
Interest Income Recognized	54	35	122
Interest Income Recognized on Cash Basis	$ 54	$ 32	$ 121

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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-Publisher FASB
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-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
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Amount of allowance for credit losses related to recorded investment.

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Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18794-111554

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