ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Parenthetical) (Details) - USD ($)		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Reclassification to net income	[1]	$ 844,000	$ 642,000

[1] The Company reclassified amortization of prior service cost and actuarial loss for its retirement plan from accumulated other comprehensive loss to net income of $844,000 and $642,000 for the six months ended June 30, 2018 and 2017, respectively.