FAIR VALUE - Summary of assets measured at fair value on Non recurring basis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	$ 658		$ 658
Impaired loans	16,560		16,895
Other real estate owned, gross			2,400
Other real estate owned valuation allowance			1,700
Impaired loans carrying value	1,435	$ 1,835	1,735
Allowance for loans	7,645		7,451
Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	658		658
Impaired loans	495		795
Level 3
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans carrying value	1,400		1,700
Allowance for loans	900		900
Provision for loan losses	0	$ 0
Level 3 | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned	658		658
Impaired loans	495		795
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	495		795
Commercial and Industrial | Level 3 | Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Impaired loans	$ 495		$ 795