GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Aug. 31, 2016	Apr. 30, 2016
Goodwill	$ 5,694,000	$ 3,805,000
Deposit based intangible assets	$ 2,172,000	1,076,000
Estimated life	10 years
Amortization of Intangible Assets	$ 197,000	$ 121,000	$ 10,000
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