GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Aug. 31, 2016	Apr. 29, 2016	Dec. 31, 2014
Goodwill	$ 5,694,000	$ 5,694,000
Deposit based intangible assets	1,922,000	2,172,000
Amortization expense	249,000	197,000	$ 121,000
Amortization expense year one	250,000
Amortization expense year two	250,000
Amortization expense year three	250,000
Amortization expense year four	250,000
Amortization expense year five	$ 250,000
PFC
Goodwill						$ 3,805,000
Deposit based intangible assets						$ 1,206,000
Eagle River
Goodwill		1,839,000			$ 1,839,000
Deposit based intangible assets		993,000
Niagara Bancorporation
Goodwill		50,000		$ 50,000
Deposit based intangible assets		$ 300,000