DEBT (Tables)

9 Months Ended

Sep. 30, 2020

Debt And Derivatives Disclosure [Abstract]

Summary of Long-term Debt and Finance Leases by Debt Instrument

A summary of debt is as follows:

	September 30, 2020		December 31, 2019
Senior Secured Credit Facility:
Revolving line of credit facility ("Revolving Credit Facility") due May 2023; bearing interest at LIBOR plus 1.75%	$	—	$	26,900
Term loan A facility ("Term Loan Facility") due May 2023; bearing interest at LIBOR plus 1.75%	350,000		350,000
Tax-Exempt Bonds:
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014 ("New York Bonds 2014R-1") due December 2044 - fixed rate interest period through 2029; bearing interest at 2.875%	25,000		25,000
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014R-2 ("New York Bonds 2014R-2") due December 2044 - fixed rate interest period through 2026; bearing interest at 3.125%	15,000		15,000
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2020 ("New York Bonds 2020") due September 2050 - fixed rate interest period through 2025; bearing interest at 2.750%	40,000		—
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-3 ("FAME Bonds 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 ("FAME Bonds 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 ("FAME Bonds 2015R-2") due August 2035 - fixed rate interest period through 2025; bearing interest at 4.375%	15,000		15,000
Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013 ("Vermont Bonds") 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 ("New Hampshire Bonds") due April 2029 - fixed rate interest period through 2029; bearing interest at 2.95%	11,000		11,000
Other:
Finance leases maturing through December 2107; bearing interest at a weighted average of 4.3%	32,045		18,364
Notes payable maturing through June 2027; bearing interest at a weighted average of 3.5%	5,012		5,464
Principal amount of debt	549,057		522,728
Less—unamortized debt issuance costs (1)	9,340		9,406
Debt less unamortized debt issuance costs	539,717		513,322
Less—current maturities of debt	8,588		4,301
	$	531,129	$	509,021

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

	September 30, 2020		December 31, 2019
Revolving Credit Facility and Term Loan Facility (collectively, the "Credit Facility")	$	4,249	$	5,478
New York Bonds 2014R-1	1,017		1,057
New York Bonds 2014R-2	344		390
New York Bonds 2020	1,505		—
FAME Bonds 2005R-3	368		432
FAME Bonds 2015R-1	500		552
FAME Bonds 2015R-2	362		417
Vermont Bonds	500		541
New Hampshire Bonds	495		539
	$	9,340	$	9,406

Summary of Cash Flow Hedges

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

		Fair Value
	Balance Sheet Location	September 30, 2020		December 31, 2019
Interest rate swaps	Other accrued liabilities	$	4,694	$	1,824
Interest rate swaps	Other long-term liabilities	9,746		3,603
		$	14,440	$	5,427
Interest rate swaps	Accumulated other comprehensive loss	$	(14,639)	$	(5,929)
Interest rate swaps - tax provision	Accumulated other comprehensive loss	—		(112)
		$	(14,639)	$	(6,041)

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Statement of Operations Location	(Expense) Income				(Expense) Income
Interest expense	$	(1,156)	$	(30)	$	(2,513)	$	86