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CONVERTIBLE NOTES (Tables) | 12 Months Ended
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Dec. 31, 2015
CONVERTIBLE NOTES [Abstract] |
Schedule of Interest Expense Recognized | The following table sets forth total interest expense recognized for the years ended December 31, 2013, 2014 and 2015 related to the Notes:
|  | Year ended December 31, |
(U.S. Dollars in thousands) |  | 2013 |  | 2014 |  | 2015 |
Contractual interest expense |  | $ | 888 |  | $ | 3,105 |  | $ | 3,105 |
Amortization of debt issuance costs and debt discount |  |  | 127 |  |  | 444 |  |  | 444 |
Total |  | $ | 1,015 |  | $ | 3,549 |  | $ | 3,549 |

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- Definition Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities. + References No definition available. + Details
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