OTHER ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other assets [Abstract]
Cash surrender value of the COLI	$ 11,600	$ 12,300
Increase (decrease) in cash surrender value	(400)	1,300
Investments held in Rabbi Trust [Member]
Other assets [Abstract]
Cost of investments	1,400	1,300
Securities measured at fair value	1,400	1,500
Unrealized gain on investments	0	200
Supplemental Employee Retirement Plans [Member]
Other assets [Abstract]
Benefit obligation	18,676	19,134	$ 16,900
Value of assets earmarked for SERP use but not restricted to that use	$ 13,000	$ 14,000