DEBT (Tables)

9 Months Ended

Sep. 30, 2021

Debt And Derivatives Disclosure [Abstract]

Summary of Debt

A summary of debt is as follows:

	September 30, 2021		December 31, 2020
Senior Secured Credit Facility:
Revolving line of credit facility ("Revolving Credit Facility") due May 2023; bearing interest at LIBOR plus 1.50%	$	—	$	—
Term loan A facility ("Term Loan Facility") due May 2023; bearing interest at LIBOR plus 1.50%	347,375		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		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 3.6%	44,804		31,486
Notes payable maturing through June 2027; bearing interest at a weighted average of 3.4%	4,377		4,933
Principal amount of debt	558,556		548,419
Less—unamortized debt issuance costs (1)	7,053		8,768
Debt less unamortized debt issuance costs	551,503		539,651
Less—current maturities of debt	16,751		9,240
	$	534,752	$	530,411

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

	September 30, 2021		December 31, 2020
Revolving Credit Facility and Term Loan Facility (collectively, the "Credit Facility")	$	2,609	$	3,839
New York Bonds 2014R-1	950		1,000
New York Bonds 2014R-2	283		329
New York Bonds 2020	1,328		1,461
FAME Bonds 2005R-3	283		347
FAME Bonds 2015R-1	430		482
FAME Bonds 2015R-2	287		343
Vermont Bonds	446		487
New Hampshire Bonds	437		480
	$	7,053	$	8,768

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, 2021		December 31, 2020
Interest rate swaps	Other non-current assets	$	228	$	—
Interest rate swaps	Other accrued liabilities	$	4,612	$	4,774
Interest rate swaps	Other long-term liabilities	2,992		8,463
		$	7,604	$	13,237
Interest rate swaps	Accumulated other comprehensive loss, net of tax	$	(7,568)	$	(13,434)
Interest rate swaps - tax effect	Accumulated other comprehensive loss, net of tax	538		1,917
		$	(7,030)	$	(11,517)

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,
Statement of Operations Location	2021		2020		2021		2020
Interest expense	$	1,204	$	1,156	$	3,551	$	2,513