REPURCHASE AGREEMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Sep. 30, 2017
Available-for-sale Securities, Total	$ 62,257	[1]	$ 53,705
Repurchase Agreements [Member]
Available-for-sale Securities, Total	12,064
Gross amount of recognized liabilities for repurchase agreements	12,003
U.S. Government agencies-GSE’s [Member]
Available-for-sale Securities, Total	14,159		10,644
U.S. Government agencies-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	5,568
Mortgage-backed Securities-GSE’s [Member]
Available-for-sale Securities, Total	32,363		$ 28,939
Mortgage-backed Securities-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	6,496
Overnight and continuous [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	12,064
Overnight and continuous [Member] | U.S. Government agencies-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	5,568
Overnight and continuous [Member] | Mortgage-backed Securities-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	6,496
Maturity Less than 30 Days [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity Less than 30 Days [Member] | U.S. Government agencies-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity Less than 30 Days [Member] | Mortgage-backed Securities-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity 30 to 90 Days [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity 30 to 90 Days [Member] | U.S. Government agencies-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity 30 to 90 Days [Member] | Mortgage-backed Securities-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity Greater than 90 Days [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity Greater than 90 Days [Member] | U.S. Government agencies-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	0
Maturity Greater than 90 Days [Member] | Mortgage-backed Securities-GSE’s [Member] | Repurchase Agreements [Member]
Available-for-sale Securities, Total	$ 0

[1] Derived from audited consolidated financial statements.