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Derivative instruments (Tables) | 12 Months Ended
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Dec. 31, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract] |
Schedule of Fair Values of Derivative Instruments | The tables below disclose the types of derivative instruments the Company owns, the classifications and fair values of these instruments within the balance sheet, and the amount of gain (loss) recognized in other comprehensive income (loss) (“OCI”) or net income (loss).
|  | December 31, |  |  |
(U.S. Dollars, in thousands) |  | 2016 |  |  | 2015 |  |  | Balance sheet location
Cross-currency swap |  | $ | — |  |  | $ | 2,485 |  |  | Prepaid expenses and other current assets
Warrants (Note 6) |  |  | 321 |  |  |  | 321 |  |  | Other long-term assets
Schedule of Gain (Loss) Recognized in Other Comprehensive Income (Loss) |
|  | For the year ended December 31, |
(U.S. Dollars, in thousands) |  | 2016 |  |  | 2015 |  |  | 2014 |
Cross-currency swap unrealized gain (loss), net of taxes |  | $ | (228 | ) |  | $ | 128 |  |  | $ | 251 |
Warrants unrealized loss, net of taxes |  | $ | — |  |  | $ | — |  |  | $ | (3 | )

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
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