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STOCK COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock
Shares [Roll Forward]
Nonvested, beginning of period (in shares)	23,794	22,569		22,569
Granted (in shares)				8,249
Vested (in shares)				(7,024)
Forfeited or cancelled (in shares)				0
Nonvested, end of period (in shares)				23,794	22,569
Weighted-Average Grant Date Fair Value [Roll Forward]
Nonvested, beginning of period (in dollars per share)	$ 29.90	$ 28.09		$ 28.09
Granted (in dollars per share)				32.77
Vested (in dollars per share)				27.45
Forfeitures or cancelled (in dollars per share)				0.00
Nonvested, end of period (in dollars per share)				$ 29.90	$ 28.09
Total unrecognized compensation cost related to nonvested shares granted under the Plan				$ 693
Weighted-average period for recognition				3 years 9 months 4 days
Total fair value of shares vested				$ 193	$ 314	$ 152
President and Chief Executive Officer
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Service period				12 months
Directors and President and Chief Executive Officer
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of treasury shares reissued to fund stock compensation (in shares)		9,532	9,673
Expense related to stock compensation recognized				$ 269	$ 262	$ 271
Subsequent Event | Directors and President and Chief Executive Officer
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of treasury shares reissued to fund stock compensation (in shares)	7,880

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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