MORTGAGE SERVICING RIGHTS - Changes in mortgage servicing rights (Details) - Changes in mortgage servicing rights - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Mortgage Servicing Rights
Balance, beginning of period		$ 416	$ 599	$ 487	$ 694
Originated		27	22	71	124
Amortization (1)	[1]	(67)	(86)	(182)	(282)
Balance, end of period		376	535	376	535
Valuation Allowance
Balance, beginning of period		(25)	(2)	(4)	1
(Increase) decrease in impairment reserve (1)	[1]	8	2	(13)	(2)
Balance, end of period		(17)		(17)
Loan servicing rights, net		$ 359	$ 535	$ 359	$ 535

[1] (1) Amortization expense and changes in the impairment reserve are recorded in mortgage servicing, net, in the consolidated statements of income.