EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Schedule of Multiemployer Defined Benefit Pension Plans

The following table outlines our participation in the multiemployer defined benefit pension plan:

Pension Fund	EIN/Pension Plan Number	Pension Protection Act Zone Status		Funding Improvement or Rehabilitation Plan Status	Contributions to Plan						Expiration Date of CBA
					Fiscal Year Ended December 31,
		2017	2016		2017		2016		2015
New England Teamsters and Trucking Industry Pension Fund	04-6372430	Critical and declining	Critical	Implemented	$	627	$	523	$	413	June 30, 2020