6. IMPAIRED AND NONPERFORMING LOANS AND LEASES AND OTHER REAL ESTATE OWNED - Impaired loans and leases (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Impaired Loans and Leases	$ 6,683	$ 17,958	$ 6,406	$ 18,093
Interest income recognized on impaired loans and leases	91	493	259	720
Commercial
Impaired Loans and Leases	0	2,369	0	2,391
Interest income recognized on impaired loans and leases	0	115	0	114
Real estate-commercial
Impaired Loans and Leases	6,289	13,139	6,010	13,220
Interest income recognized on impaired loans and leases	85	320	243	503
Real estate-multi-family
Impaired Loans and Leases	0	477	0	479
Interest income recognized on impaired loans and leases	0	17	0	25
Real Estate Residential
Impaired Loans and Leases	326	1,973	327	2,003
Interest income recognized on impaired loans and leases	5	39	14	76
Consumer
Impaired Loans and Leases	68	0	69	0
Interest income recognized on impaired loans and leases	$ 1	$ 2	$ 2	$ 2