LOANS: (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Recorded Investment	$ 12,292	$ 14,401
Unpaid Principal Balance	13,542	16,234
Related Allowance	1,014	552
Agriculture | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	18	19
Unpaid Principal Balance	18	19
Related Allowance
Agriculture | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment		5
Unpaid Principal Balance		5
Related Allowance		5
Consumer Installment Loans | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	9	26
Unpaid Principal Balance	9	43
Related Allowance
Consumer Installment Loans | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment		9
Unpaid Principal Balance		9
Related Allowance		3
Commercial Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	497	67
Unpaid Principal Balance	497	67
Related Allowance	182	18
Commercial Real Estate [Member] | Real Estate [Member] | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	3,017	3,636
Unpaid Principal Balance	3,108	4,055
Related Allowance
Commercial Real Estate [Member] | Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	709	1,191
Unpaid Principal Balance	800	1,270
Related Allowance	99	65
Construction and Land Development | Real Estate [Member] | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment		5
Unpaid Principal Balance		5
Related Allowance
Construction and Land Development | Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	215	240
Unpaid Principal Balance	454	469
Related Allowance	81	106
Residential 1-4 Family | Real Estate [Member] | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	3,852	3,861
Unpaid Principal Balance	4,152	4,182
Related Allowance
Residential 1-4 Family | Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	569	555
Unpaid Principal Balance	596	565
Related Allowance	108	56
Multifamily | Real Estate [Member] | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	289	301
Unpaid Principal Balance	330	342
Related Allowance
Multifamily | Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	1,331
Unpaid Principal Balance	1,399
Related Allowance	216
Farmland | Real Estate [Member] | Impaired Financing Receivables With No Related Allowance [Member]
Recorded Investment	884	3,895
Unpaid Principal Balance	1,261	4,601
Related Allowance
Farmland | Real Estate [Member] | Impaired Financing Receivables With Related Allowance [Member]
Recorded Investment	902	591
Unpaid Principal Balance	918	602
Related Allowance	$ 328	$ 299