8. LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Internal risk ratings (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Total	$ 314,802	$ 313,393
Pass
Total	291,563	284,337
Watch
Total	21,615	24,222
Special mention
Total	1,249	2,940
Substandard
Total	375	296
Doubtful or loss
Total		1,598
Commercial Loan [Member] | Pass
Total	24,389	23,617
Commercial Loan [Member] | Watch
Total	107	96
Commercial Loan [Member] | Special mention
Total	0	66
Commercial Loan [Member] | Substandard
Total	30	0
Commercial Loan [Member] | Doubtful or loss
Total		1,598
Commercial
Total	24,526	25,377
Real estate-commercial
Total	190,677	185,452
Real estate-commercial | Pass
Total	172,951	164,815
Real estate-commercial | Watch
Total	16,202	18,083
Real estate-commercial | Special mention
Total	1,247	2,265
Real estate-commercial | Substandard
Total	277	289
Real estate-commercial | Doubtful or loss
Total		0
Real estate-multi-family
Total	65,312	78,025
Real estate-multi-family | Pass
Total	61,458	73,644
Real estate-multi-family | Watch
Total	3,854	4,381
Real estate-multi-family | Special mention
Total	0	0
Real estate-multi-family | Substandard
Total	0	0
Real estate-multi-family | Doubtful or loss
Total		0
Real Estate Construction | Pass
Total	7,486	5,863
Real Estate Construction | Watch
Total	0	0
Real Estate Construction | Special mention
Total	0	0
Real Estate Construction | Substandard
Total	0	0
Real Estate Construction | Doubtful or loss
Total		0
Real estate-construction
Total	7,486	5,863
Residential Real Estate [Member] | Pass
Total	15,393	13,767
Residential Real Estate [Member] | Watch
Total	1,304	1,507
Residential Real Estate [Member] | Special mention
Total	0	539
Residential Real Estate [Member] | Substandard
Total	0	0
Residential Real Estate [Member] | Doubtful or loss
Total		0
Real Estate Residential
Total	16,697	15,813
Leases
Total	61	205
Leases | Pass
Total	61	205
Leases | Watch
Total	0	0
Leases | Special mention
Total	0	0
Leases | Substandard
Total	0	0
Leases | Doubtful or loss
Total		0
Agriculture
Total	4,591	1,713
Agriculture | Pass
Total	4,591	1,713
Agriculture | Watch
Total	0	0
Agriculture | Special mention
Total	0	0
Agriculture | Substandard
Total	0	0
Agriculture | Doubtful or loss
Total		0
Consumer Loan [Member] | Pass
Total	5,234	713
Consumer Loan [Member] | Watch
Total	148	155
Consumer Loan [Member] | Special mention
Total	2	70
Consumer Loan [Member] | Substandard
Total	68	7
Consumer Loan [Member] | Doubtful or loss
Total		0
Consumer
Total	$ 5,452	$ 945