FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Summary of Financial Assets and Liabilities at Fair Value

Summaries of our financial assets and liabilities that are measured at fair value on a recurring basis follow:

	Fair Value Measurement at June 30, 2018 Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Interest rate swaps	$	—	$	1,351	$	—
Restricted investment securities - landfill closure	1,198		—		—
Total	$	1,198	$	1,351	$	—
Liabilities:
Interest rate swaps	$	—	$	416	$	—

	Fair Value Measurement at December 31, 2017 Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Restricted investment securities - landfill closure	$	1,220	$	—	$	—
Interest rate swaps	—		401
Total	$	1,220	$	401	$	—
Liabilities:
Interest rate swaps	$	—	$	123	$	—