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DEBT (Tables) | 12 Months Ended
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Dec. 31, 2015
DEBT [Abstract] |
Scheduled principal payments of the long-term debt outstanding | Scheduled principal payments of the long-term debt outstanding at December 31, 2015 are as follows (in thousands):
2016(1) |  | $ | 24,772 |
2017 |  |  | 18,813 |
2018 |  |  | 24,188 |
2019 |  |  | 119,415 |
Total long-term debt |  |  | 187,188 |
Less: Current maturities of long-term debt |  |  | (24,772 | )
Noncurrent portion of long-term debt |  | $ | 162,416 |
(1) Includes an estimated $8.6 million excess cash flow payment due in 2016 based on 2015 results as per the terms of the CSA.

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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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