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LONG TERM DEBT AND CAPITAL LEASES - Components of Long-Term Debt and Capital Leases (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Debt Instrument [Line Items] |  |
Long-term debt and capital lease | $ 525,583 | $ 525,019
Unamortized discount and debt issuance costs | 16,936 | 17,586
Long-term debt and capital leases less unamortized discount and debt issuance costs | 508,647 | 507,433
Less—current maturities of long-term debt | 4,686 | 1,448
Non current portion of long term debt and capital lease obligation | 503,961 | 505,985
Senior Secured Asset-Backed Credit Facility, Due February 2020; bearing interest at one month LIBOR plus 2.25% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 0 | 57,422
Unamortized discount and debt issuance costs | 0 | 5,593
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% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 25,000 | 25,000
Unamortized discount and debt issuance costs | 1,221 | 1,407
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% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 15,000 | 0
Unamortized discount and debt issuance costs | 571 | 0
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-2 due January 2025 - fixed rate interest period through 2017; bearing interest at 6.25% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 21,400 | 21,400
Unamortized discount and debt issuance costs | 502 | 566
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015 due August 2035 - fixed rate interest period through 2025; bearing interest at 5.125% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 15,000 | 15,000
Unamortized discount and debt issuance costs | 760 | 830
Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013 due April 2036 - fixed rate interest period through 2018; bearing interest at 4.75% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 16,000 | 16,000
Unamortized discount and debt issuance costs | 605 | 636
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% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 11,000 | 11,000
Unamortized discount and debt issuance costs | 563 | 690
Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-1; letter of credit backed due January 2025 - bearing interest at SIFMA Index |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 3,600 | 3,600
Unamortized discount and debt issuance costs | 31 | 35
Capital leases maturing through April 2023; bearing interest at up to 7.70% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 5,534 | 4,130
Notes payable maturing through January 2021; bearing interest at up to 7.00% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 449 | 1,167
Senior Subordinated Notes, Due February 2019; bore interest at 7.75% |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 0 | 370,300
Unamortized discount and debt issuance costs | 0 | 7,829
Term Loan B Facility due October 2023; bearing interest at LIBOR plus 3.00% | Secured Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 350,000 | 0
Unamortized discount and debt issuance costs | 7,718 | 0
Revolving Credit Facility | Revolving Credit Facility due October 2021; bearing interest at LIBOR plus 3.00% | Line of Credit |  |
Debt Instrument [Line Items] |  |
Long-term debt and capital lease | 62,600 | 0
Unamortized discount and debt issuance costs | $ 4,965 | $ 0

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- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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