LOANS:(Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total loans and leases	$ 501,390	$ 468,629
Real Estate [Member]
Total loans and leases	438,069	416,316
Commercial
Total loans and leases		26,955
Commercial | Real Estate [Member]
Total loans and leases	114,880	103,331
Construction and Land Development | Real Estate [Member]
Total loans and leases	30,878	25,755
Residential 1-4 Family | Real Estate [Member]
Total loans and leases	254,234	249,700
Multifamily | Real Estate [Member]
Total loans and leases	14,790	12,582
Farmland | Real Estate [Member]
Total loans and leases	23,287	24,948
Commercial Real Estate [Member]
Total loans and leases	36,382	26,955
Agriculture
Total loans and leases	3,733	3,164
Consumer Installment Loans
Total loans and leases	22,519	22,188
Other Loans
Total loans and leases	$ 687	$ 6