LONG-TERM DEBT - General (Details) - USD ($)
$ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Debt Instrument [Line Items] |
|
|
| Long-term debt |
$ 836,086
|
$ 975,531
|
| Long-term Debt |
840,386
|
979,831
|
| Long-term Debt, Current Maturities |
(4,300)
|
(4,300)
|
| Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months |
4,300
|
|
| Long-term Debt, Maturities, Repayments of Principal in Year Two |
4,300
|
|
| Long-term Debt, Maturities, Repayments of Principal in Year Three |
4,300
|
|
| Long-term Debt, Maturities, Repayments of Principal in Year Four |
4,300
|
|
| Long-term Debt, Maturities, Repayments of Principal in Year Five |
4,300
|
|
| Long-term Debt, Maturities, Repayments of Principal after Year Five |
886,675
|
|
| Long-term Debt, Gross |
908,175
|
|
| Senior Secured Asset-Based Revolving Credit Facility due 2016 [Member] |
|
|
| Debt Instrument [Line Items] |
|
|
| Long-term debt |
0
|
0
|
| Six Point Five Senior Notes due 2022 [Member] [Member] |
|
|
| Debt Instrument [Line Items] |
|
|
| Long-term Debt |
600,065
|
592,462
|
| Term Loan Facility due 2021 [Member] |
|
|
| Debt Instrument [Line Items] |
|
|
| Long-term Debt |
$ 240,321
|
$ 387,369
|