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LONG-TERM DEBT (Tables) | 9 Months Ended
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Sep. 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:
| September 30, 2018 |  | December 31, 2017
Senior Secured Credit Facility: |  |  |
Revolving Credit Facility due May 2023; bearing interest at LIBOR plus 2.00% | $ | 44,800 |  |  | $ | — |
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 5.37% | 8,934 |  |  | 5,595 |
Notes payable maturing through June 2027; bearing interest at a weighted average of 2.97% | 2,477 |  |  | 2,585 |
Principal amount of long-term debt and capital leases | 528,211 |  |  | 497,680 |
Less—unamortized discount and debt issuance costs (1) | 11,524 |  |  | 15,178 |
Long-term debt and capital leases less unamortized discount and debt issuance costs | 516,687 |  |  | 482,502 |
Less—current maturities of long-term debt | 1,980 |  |  | 4,926 |
| $ | 514,707 |  |  | $ | 477,576 |
(1) | A summary of unamortized discount and debt issuance costs by debt instrument follows:
| September 30, 2018 |  | December 31, 2017
Refinanced Revolving Credit Facility | $ | — |  |  | $ | 3,938 |
Credit Facility | 7,528 |  |  | — |
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 | 894 |  |  | 1,034 |
New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014R-2 | 465 |  |  | 511 |
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-3 | 539 |  |  | 603 |
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-1 | 639 |  |  | 691 |
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-2 | 511 |  |  | — |
Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013 | 608 |  |  | 573 |
Business Finance Authority of the State of New Hampshire Solid Waste Disposal Revenue Bonds Series 2013 | 340 |  |  | 436 |
| $ | 11,524 |  |  | $ | 15,178 |
Schedule of Cash Flow Hedges Related to Derivative Instruments | 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 September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Statement of Operations Location |  | (Expense) Income |  | (Expense) Income
Interest expense |  | $ | (156 | ) |  | $ | (112 | ) |  | $ | (247 | ) |  | $ | (320 | )
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, 2018 |  | December 31, 2017
Interest rate swaps | Other current assets |  | $ | 350 |  |  | $ | — |
Interest rate swaps | Other non-current assets |  | 1,809 |  |  | 401 |
Total |  |  | $ | 2,159 |  |  | $ | 401 |
Interest rate swaps | Other accrued liabilities |  | $ | 326 |  |  | $ | 123 |
Interest rate swaps | Other long-term liabilities |  | — |  |  | — |
Total |  |  | $ | 326 |  |  | $ | 123 |
Interest rate swaps | Accumulated other comprehensive income |  | $ | 1,811 |  |  | $ | 278 |
Interest rate swaps - tax provision | Accumulated other comprehensive income |  | $ | (525 | ) |  | $ | (112 | )
|  |  | $ | 1,286 |  |  | $ | 166 |
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 |  | September 30, 2018 |  | December 31, 2017
Interest rate swaps | Other current assets |  | $ | 350 |  |  | $ | — |
Interest rate swaps | Other non-current assets |  | 1,809 |  |  | 401 |
Total |  |  | $ | 2,159 |  |  | $ | 401 |
Interest rate swaps | Other accrued liabilities |  | $ | 326 |  |  | $ | 123 |
Interest rate swaps | Other long-term liabilities |  | — |  |  | — |
Total |  |  | $ | 326 |  |  | $ | 123 |
Interest rate swaps | Accumulated other comprehensive income |  | $ | 1,811 |  |  | $ | 278 |
Interest rate swaps - tax provision | Accumulated other comprehensive income |  | $ | (525 | ) |  | $ | (112 | )
|  |  | $ | 1,286 |  |  | $ | 166 |

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- Definition Tabular disclosure of the effective portion of gains and losses on derivative instruments (and nonderivative instruments) designated and qualifying in cash flow hedges recorded in accumulated other comprehensive income (loss) during the term of the hedging relationship and reclassified into earnings during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure for cash flow hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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