STOCK COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restricted Stock
Shares [Roll Forward]
Nonvested, Beginning Balance (in shares)	29,694		29,436		29,694
Granted (in shares)			0		439
Vested (in shares)			0		(697)
Forfeited or cancelled (in shares)			0		0
Nonvested, Ending Balance (in shares)			29,436		29,436
Weighted-Average Grant Date Fair Value [Roll Forward]
Nonvested, Beginning Balance (in dollars per share)	$ 40.81		$ 41.03		$ 40.81
Granted (in dollars per share)			0.00		45.66
Vested (in dollars per share)			0.00		34.58
Forfeitures or cancelled (in dollars per share)			0.00		0.00
Nonvested, Ending Balance (in dollars per share)			$ 41.03		$ 41.03
Total unrecognized compensation cost related to nonvested shares granted under the Plan			$ 900		$ 900
Weighted-average period for recognition					3 years 18 days
Total fair value of shares vested					$ 32	$ 112
President and Chief Executive Officer
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Service period for comparable group used to determine share based payment awards					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)	8,465	6,015
Expenses related to stock based compensation recognized			$ 79	$ 86	$ 256	$ 271