LOANS: (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Total loans and leases	$ 527,379	$ 513,008
Real Estate [Member]
Total loans and leases	452,749	445,089
Commercial [Member]
Total loans and leases	48,034	41,345
Commercial [Member] | Real Estate [Member]
Total loans and leases	138,849	127,688
Construction and Land Development | Real Estate [Member]
Total loans and leases	27,611	29,763
Residential 1-4 Family | Real Estate [Member]
Total loans and leases	250,329	249,159
Multifamily | Real Estate [Member]
Total loans and leases	13,757	15,481
Farmland | Real Estate [Member]
Total loans and leases	22,203	22,998
Commercial Real Estate [Member]
Total loans and leases	48,034	41,345
Agriculture
Total loans and leases	4,487	3,494
Consumer Installment Loans
Total loans and leases	21,475	22,411
Other Loans
Total loans and leases	$ 634	$ 669