LOANS: (Details 4) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans 30-59 Days Past Due	$ 5,565	$ 4,725
Loans 60-89 Days Past Due	800	3,149
Loans 90 or More Days Past Due	1,175	2,095
Total Past Due Loans	7,540	9,969
Current Loans	508,823	503,039
Total loans and leases	516,363	513,008
Real Estate [Member]
Loans 30-59 Days Past Due	5,536	4,482
Loans 60-89 Days Past Due	778	3,109
Loans 90 or More Days Past Due	1,175	1,464
Total Past Due Loans	7,489	9,055
Current Loans	437,553	436,034
Total loans and leases	445,042	445,089
Commercial
Total loans and leases	44,760	41,345
Commercial | Real Estate [Member]
Loans 30-59 Days Past Due	1,596	190
Loans 60-89 Days Past Due	25	2,396
Loans 90 or More Days Past Due	318	453
Total Past Due Loans	1,939	3,039
Current Loans	130,833	124,649
Total loans and leases	132,772	127,688
Construction and Land Development | Real Estate [Member]
Loans 30-59 Days Past Due	561	69
Loans 60-89 Days Past Due		246
Loans 90 or More Days Past Due	42	42
Total Past Due Loans	603	357
Current Loans	22,755	29,406
Total loans and leases	23,358	29,763
Residential 1-4 Family | Real Estate [Member]
Loans 30-59 Days Past Due	1,832	3,789
Loans 60-89 Days Past Due	508	378
Loans 90 or More Days Past Due	815	969
Total Past Due Loans	3,155	5,136
Current Loans	246,811	244,023
Total loans and leases	249,966	249,159
Multifamily | Real Estate [Member]
Loans 30-59 Days Past Due		125
Loans 60-89 Days Past Due		89
Loans 90 or More Days Past Due
Total Past Due Loans		214
Current Loans	14,143	15,267
Total loans and leases	14,143	15,481
Farmland | Real Estate [Member]
Loans 30-59 Days Past Due	1,547	309
Loans 60-89 Days Past Due	245
Loans 90 or More Days Past Due
Total Past Due Loans	1,792	309
Current Loans	23,011	22,689
Total loans and leases	24,803	22,998
Commercial Real Estate [Member]
Loans 30-59 Days Past Due		103
Loans 60-89 Days Past Due		25
Loans 90 or More Days Past Due		603
Total Past Due Loans		731
Current Loans	44,760	40,614
Total loans and leases	44,760	41,345
Agriculture
Loans 30-59 Days Past Due	3	38
Loans 60-89 Days Past Due	13
Loans 90 or More Days Past Due
Total Past Due Loans	16	38
Current Loans	3,941	3,456
Total loans and leases	3,957	3,494
Consumer Installment Loans
Loans 30-59 Days Past Due	26	102
Loans 60-89 Days Past Due	9	15
Loans 90 or More Days Past Due		28
Total Past Due Loans	35	145
Current Loans	21,917	22,266
Total loans and leases	21,952	22,411
Other Loans
Loans 30-59 Days Past Due
Loans 60-89 Days Past Due
Loans 90 or More Days Past Due
Total Past Due Loans
Current Loans	652	669
Total loans and leases	$ 652	$ 669