LONG-TERM DEBT (Tables)

6 Months Ended

Jun. 30, 2018

Debt And Derivatives Disclosure [Abstract]

Summary of Components of Long-Term Debt and Capital Leases by Debt Instrument

A summary of long-term debt and capital leases by debt instrument follows:

	June 30, 2018		December 31, 2017
Senior Secured Credit Facility:
Revolving Credit Facility due May 2023; bearing interest at LIBOR plus 2.00%	$	33,300	$	—
Refinanced Revolving Credit Facility due October 2021; bore interest at LIBOR plus 2.75%	—		36,000
Term Loan Facility due May 2023; bearing interest at LIBOR plus 2.00%	350,000		—
Term Loan B Facility due October 2023; bore interest at LIBOR plus 2.50%	—		346,500
Tax-Exempt Bonds:
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014 due December 2044 - fixed rate interest period through 2019; bearing interest at 3.75%	25,000		25,000
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014R-2 due December 2044 - fixed rate interest period through 2026; bearing interest at 3.125%	15,000		15,000
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-3 due January 2025 - fixed rate interest period through 2025; bearing interest at 5.25%	25,000		25,000
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-1 due August 2035 - fixed rate interest period through 2025; bearing interest at 5.125%	15,000		15,000
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-2 due August 2035 - fixed rate interest period through 2025; bearing interest at 4.375%	15,000		—
Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013 due April 2036 - fixed rate interest period through 2028; bearing interest at 4.625%	16,000		16,000
Business Finance Authority of the State of New Hampshire Solid Waste Disposal Revenue Bonds Series 2013 due April 2029 - fixed rate interest period through 2019; bearing interest at 4.00%	11,000		11,000
Other:
Capital leases maturing through December 2107; bearing interest at a weighted average of 5.52%	8,261		5,595
Notes payable maturing through June 2027; bearing interest at a weighted average of 2.90%	2,431		2,585
Principal amount of long-term debt and capital leases	515,992		497,680
Less—unamortized discount and debt issuance costs (1)	12,102		15,178
Long-term debt and capital leases less unamortized discount and debt issuance costs	503,890		482,502
Less—current maturities of long-term debt	1,796		4,926
	$	502,094	$	477,576

(1) A summary of unamortized discount and debt issuance costs by debt instrument follows:

	June 30, 2018		December 31, 2017
Refinanced Revolving Credit Facility	$	—	$	3,938
Credit Facility	7,948		—
Term Loan B Facility (including unamortized discount of $0 and $1,482)	—		7,392
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014	941		1,034
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014R-2	480		511
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-3	559		603
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-1	656		691
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-2	518		—
Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013	628		573
Business Finance Authority of the State of New Hampshire Solid Waste Disposal Revenue Bonds Series 2013	372		436
	$	12,102	$	15,178

Schedule of Cash Flow Hedges Related to Derivative Instruments

A summary of the effect of cash flow hedges related to derivative instruments on the consolidated balance sheet follows:

		Fair Value
	Balance Sheet Location	June 30, 2018			December 31, 2017
Interest rate swaps	Other current assets	$	228		$	—
Interest rate swaps	Other non-current assets	1,123			401
Total		$	1,351		$	401
Interest rate swaps	Other accrued liabilities	$	356		$	123
Interest rate swaps	Other long-term liabilities	60			—
Total		$	416		$	123
Interest rate swaps	Accumulated other comprehensive income	$	939		$	278
Interest rate swaps - tax provision	Accumulated other comprehensive income	$	(290	)	$	(112	)
		$	649		$	166

A summary of the amount of gain or (loss) on cash flow hedging relationships related to interest rate swaps reclassified from accumulated other comprehensive income into earnings follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Statement of Operations Location	(Expense) Income						(Expense) Income
Interest expense	$	(38	)	$	(138	)	$	(91	)	$	(208	)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income

A summary of the effect of cash flow hedges related to derivative instruments on the consolidated balance sheet follows:

		Fair Value
	Balance Sheet Location	June 30, 2018			December 31, 2017
Interest rate swaps	Other current assets	$	228		$	—
Interest rate swaps	Other non-current assets	1,123			401
Total		$	1,351		$	401
Interest rate swaps	Other accrued liabilities	$	356		$	123
Interest rate swaps	Other long-term liabilities	60			—
Total		$	416		$	123
Interest rate swaps	Accumulated other comprehensive income	$	939		$	278
Interest rate swaps - tax provision	Accumulated other comprehensive income	$	(290	)	$	(112	)
		$	649		$	166