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LOANS - Recorded Investment and Number of Modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) modification	Sep. 30, 2018 USD ($) modification	Sep. 30, 2019 USD ($) modification	Sep. 30, 2018 USD ($) modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	7	9	25	36
Pre-Modification Outstanding Recorded Investment	$ 808	$ 406	$ 1,985	$ 5,478
Post-Modification Outstanding Recorded Investment	$ 750	$ 358	$ 1,795	$ 4,323
Interest rate and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			0	1
Post-Modification Outstanding Recorded Investment			$ 0	$ 16
Interest only payments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	2	0	2	0
Post-Modification Outstanding Recorded Investment	$ 90	$ 0	$ 90	$ 0
Interest only payments and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			2	0
Post-Modification Outstanding Recorded Investment			$ 73	$ 0
Amortization and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			4	0
Post-Modification Outstanding Recorded Investment			$ 273	$ 0
Amortization, interest rate and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			1	0
Post-Modification Outstanding Recorded Investment			$ 77	$ 0
Forbearance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	1	1	3	3
Post-Modification Outstanding Recorded Investment	$ 141	$ 115	$ 253	$ 271
Forbearance and interest only payments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	2	3	5	6
Post-Modification Outstanding Recorded Investment	$ 176	$ 72	$ 331	$ 121
Forbearance and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	0	4	0	17
Post-Modification Outstanding Recorded Investment	$ 0	$ 143	$ 0	$ 1,774
Forbearance, amortization and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	2	0	7	0
Post-Modification Outstanding Recorded Investment	$ 343	$ 0	$ 640	$ 0
Maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	0	1	0	2
Post-Modification Outstanding Recorded Investment	$ 0	$ 28	$ 0	$ 440
Restructure with maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			0	5
Post-Modification Outstanding Recorded Investment			$ 0	$ 1,419
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification			1	2
Post-Modification Outstanding Recorded Investment			$ 58	$ 282
Other commercial real estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification		1		1
Pre-Modification Outstanding Recorded Investment		$ 2		$ 2
Post-Modification Outstanding Recorded Investment		$ 1		$ 1
Other commercial real estate | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	4	1	9	9
Pre-Modification Outstanding Recorded Investment	$ 268	$ 72	$ 543	$ 1,896
Post-Modification Outstanding Recorded Investment	$ 267	$ 72	$ 529	$ 1,564
Commercial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification		5	4	7
Pre-Modification Outstanding Recorded Investment		$ 104	$ 168	$ 556
Post-Modification Outstanding Recorded Investment		$ 60	$ 91	$ 486
Commercial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	1		1	1
Pre-Modification Outstanding Recorded Investment	$ 141		$ 141	$ 167
Post-Modification Outstanding Recorded Investment	$ 141		$ 141	$ 0
Residential mortgages | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification	2	2	11	15
Pre-Modification Outstanding Recorded Investment	$ 399	$ 228	$ 1,133	$ 2,752
Post-Modification Outstanding Recorded Investment	$ 342	$ 225	$ 1,034	$ 2,168
Home equity and other consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification				1
Pre-Modification Outstanding Recorded Investment				$ 100
Post-Modification Outstanding Recorded Investment				$ 100
Home equity and other consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (modification) | modification				2
Pre-Modification Outstanding Recorded Investment				$ 5
Post-Modification Outstanding Recorded Investment				$ 4

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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-Topic 310
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-Section 50
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