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LONG TERM DEBT AND CAPITAL LEASES - Components of Interest Expense (Details) - USD ($) $ in Thousands | 8 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Apr. 30, 2014
Debt Disclosure [Abstract] |  |  |  |
Interest expense on long-term debt and capital leases | $ 23,065 | $ 34,741 | $ 35,868 | $ 34,216
Amortization of debt issuance costs and discounts on long-term debt | 2,193 | 3,881 | 3,977 | 3,000
Letter of credit fees | 714 | 593 | 637 | 1,215
Less: capitalized interest | (333) | (273) | (62) | (256)
Total interest expense | $ 25,639 | $ 38,942 | $ 40,420 | $ 38,175

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- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph 8 -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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