MORTGAGE HEDGING ACTIVITIES - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Fair Value	$ 2,302	$ 1,099
Total commitments to extend credit	157,100	83,400
IRLCs
Derivative [Line Items]
Fair Value	3,055	1,838
Notional Amount	142,195	75,090
MBSs
Derivative [Line Items]
Fair Value	(753)	(739)
Notional Amount	$ 190,000	$ 118,000
Minimum
Derivative [Line Items]
Derivative term	30 days
Maximum
Derivative [Line Items]
Derivative term	60 days

Nominal or face amount used to calculate payments on the derivative asset.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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