LOANS: (Details 1) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Total loans receivable on nonaccrual status	$ 10,223	$ 13,405
Real Estate [Member]
Total loans receivable on nonaccrual status	10,171	13,246
Commercial
Total loans receivable on nonaccrual status			$ 11
Commercial | Real Estate [Member]
Total loans receivable on nonaccrual status	2,040	3,403
Construction and Land Development | Real Estate [Member]
Total loans receivable on nonaccrual status	274	319
Residential 1-4 Family | Real Estate [Member]
Total loans receivable on nonaccrual status	6,640	8,355
Multifamily | Real Estate [Member]
Total loans receivable on nonaccrual status	155	166
Farmland | Real Estate [Member]
Total loans receivable on nonaccrual status	1,062	1,003
Agriculture
Total loans receivable on nonaccrual status	7	83
Consumer Installment Loans
Total loans receivable on nonaccrual status	$ 45	$ 76