LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - TDR ACCRUAL STATUS (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan
Troubled Debt Restructurings disclosures
Number of Loans \| loan	468	495
Recorded Investment \| $	$ 30,522	$ 32,863
Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	214	216
Recorded Investment \| $	$ 22,918	$ 23,610
Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	13	17
Recorded Investment \| $	$ 6,131	$ 7,774
Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1	1
Recorded Investment \| $	$ 63	$ 65
Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	7	5
Recorded Investment \| $	$ 991	$ 979
Consumer
Troubled Debt Restructurings disclosures
Number of Loans \| loan	233	256
Recorded Investment \| $	$ 419	$ 435
Loans on nonaccrual status
Troubled Debt Restructurings disclosures
Minimum period for which TDRs continue to be reported as non-performing loans	6 months
Number of Loans \| loan	66	65
Recorded Investment \| $	$ 7,863	$ 8,152
Loans on nonaccrual status \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	59	60
Recorded Investment \| $	$ 6,097	$ 6,378
Loans on nonaccrual status \| Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	4	3
Recorded Investment \| $	$ 1,196	$ 1,203
Loans on nonaccrual status \| Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	3	2
Recorded Investment \| $	$ 570	$ 571
Accrual Loans
Troubled Debt Restructurings disclosures
Number of Loans \| loan	402	430
Recorded Investment \| $	$ 22,659	$ 24,711
Accrual Loans \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	155	156
Recorded Investment \| $	$ 16,821	$ 17,232
Accrual Loans \| Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	9	14
Recorded Investment \| $	$ 4,935	$ 6,571
Accrual Loans \| Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1	1
Recorded Investment \| $	$ 63	$ 65
Accrual Loans \| Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	4	3
Recorded Investment \| $	$ 421	$ 408
Accrual Loans \| Consumer
Troubled Debt Restructurings disclosures
Number of Loans \| loan	233	256
Recorded Investment \| $	$ 419	$ 435

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+ References

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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