MORTGAGE BANKING ACTIVITIES - NOTIONAL AMOUNTS AND FV (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Mortgage loans held for sale
Information about derivatives and swaps
Derivative Assets, Notional Amount	$ 7,736	$ 5,668
Fair Value, Assets	7,862	5,761
Rate lock loan commitments
Information about derivatives and swaps
Derivative Assets, Notional Amount	21,225	14,696
Fair Value, Assets	348	310
Mandatory forward contracts
Information about derivatives and swaps
Derivative Assets, Notional Amount	22,989
Fair Value, Assets	$ 113
Derivative Liabilities, Notional Amount		17,159
Fair Value, Liabilities		$ 9