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LONG-TERM DEBT - Senior Facility (Details) $ in Millions | Jul. 12, 2018 | Sep. 07, 2017 USD ($) item | Nov. 07, 2018 | Sep. 30, 2018 USD ($) | May 01, 2018 USD ($) | Feb. 02, 2018
--- | --- | --- | --- | --- | --- | ---
Senior revolving credit facility |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Maximum borrowing capacity |  | $ 1,000.0 |  |  |  |
Current borrowing capacity |  |  |  | $ 200.0 |  |
Number of interim unscheduled redeterminations of borrowing base to which the company and lender each have the right | item |  | 1 |  |  |  |
Number of consecutive semi-annual redeterminations between which the company and the lenders each have the right to one interim unscheduled redetermination of borrowing base | item |  | 2 |  |  |  |
Amount outstanding |  |  |  | 55.0 |  |
Letters of credit outstanding |  |  |  | 1.6 |  |
Borrowing capacity available |  |  |  | $ 143.4 |  |
Senior revolving credit facility | Minimum |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Current Ratio |  | 1.00 |  |  |  |
Senior revolving credit facility | ABR - based | Minimum |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Applicable margin (as a percent) |  | 1.25% |  |  |  |
Senior revolving credit facility | ABR - based | Maximum |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Applicable margin (as a percent) |  | 2.25% |  |  |  |
Senior revolving credit facility | LIBOR | Minimum |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Applicable margin (as a percent) |  | 2.25% |  |  |  |
Senior revolving credit facility | LIBOR | Maximum |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Applicable margin (as a percent) |  | 3.25% |  |  |  |
Fifth Amendment to Senior Credit Agreement | Fiscal quarter ending September 30, 2018 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio |  |  | 4.75 |  |  |
Fifth Amendment to Senior Credit Agreement | Fiscal quarter ending December 31, 2018 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio |  |  | 4.25 |  |  |
Fifth Amendment to Senior Credit Agreement | Fiscal quarter ending March 31, 2019 and any fiscal quarter thereafter |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio |  |  | 4.0 |  |  |
Fourth Amendment to the Senior Credit Agreement |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA when major portion of assets sold | 4.0 |  |  |  |  |
Fourth Amendment to the Senior Credit Agreement | Fiscal quarter ending September 30, 2018 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio | 4.75 |  |  |  |  |
Fourth Amendment to the Senior Credit Agreement | Fiscal quarters ending December 31, 2018, March 31, 2019 and June 30, 2019 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio | 5.0 |  |  |  |  |
Fourth Amendment to the Senior Credit Agreement | Fiscal quarter ending September 30, 2019 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio | 4.25 |  |  |  |  |
Fourth Amendment to the Senior Credit Agreement | Fiscal quarter ending December 31, 2019 and any fiscal quarter thereafter |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio | 4.0 |  |  |  |  |
Third Amendment to the Senior Credit Agreement |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 1,000.0 |
Second Amendment to Senior Credit Agreement | Fiscal quarter ending June 30, 2018 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio |  |  |  |  |  | 4.50
Second Amendment to Senior Credit Agreement | Fiscal quarter after June 30, 2018 |  |  |  |  |  |
Current and long-term debt |  |  |  |  |  |
Total Net Debt to EBITDA ratio |  |  |  |  |  | 4.00

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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 Reference 3: 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(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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