FAIR VALUE - Summary of assets measured at fair value on Non recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	$ 658	$ 658
Impaired loans	11,827	16,895	$ 795
Other real estate owned, gross		2,400
Other real estate owned valuation allowance		1,700
Impaired loans carrying value	1,282	1,735
Allowance for loans	7,675	7,451
Level 3
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans carrying value	1,300	1,700
Allowance for loans	900	900
Commercial properties | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	658	658
Commercial properties | Level 3 | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	658	658
Commercial and Industrial | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans	342	795
Commercial and Industrial | Level 3 | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans	$ 342	$ 795