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Derivative instruments | 12 Months Ended
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Dec. 31, 2012
Derivative Instruments And Hedging Activities Disclosure [Abstract] |
Derivative instruments |
10. | 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):
(U.S. Dollars, in thousands) |  | Fair value: favorable (unfavorable) |  |  | Balance sheet location
As of December 31, 2012 |  |  |  |  |  |
Cross-currency swap |  | $ | 305 |  |  | Other long-term assets
As of December 31, 2011 |  |  |  |  |  |
Cross-currency swap |  | $ | 1,011 |  |  | Other long-term assets
|  | For the year ended December 31, |
(U.S. Dollars, in thousands) |  | 2012 |  |  | 2011 |  |  | 2010 |
Interest rate swap gain recognized in net income (loss) |  | $ | — |  |  | $ | — |  |  | $ | 1,254 |
Cross-currency swap gain (loss) recorded in other comprehensive income (loss), net of taxes |  |  | 263 |  |  |  | (437 | ) |  |  | (90 | )
Cross-currency swap On September 30, 2010, the Company entered into a cross-currency swap agreement (the “replacement swap agreement”) with JPMorgan Chase Bank and Royal Bank of Scotland PLC (the “counterparties”) to manage its cash flows related to foreign currency exposure for a portion of the Company’s intercompany receivable of a U.S. dollar functional currency subsidiary that is denominated in Euro. Under the terms of the swap agreement, the Company pays Euros based on a €28.7 million notional value and a fixed rate of 5.00% and receives U.S. dollars based on a notional value of $39 million and a fixed rate of 4.635%. The expiration date is December 30, 2016, the date upon which the underlying intercompany debt, to which the swap agreement applies, matures. The swap agreement is designated as a cash flow hedge and therefore the Company recognized an unrealized gain (loss) on the change in fair value, net of tax, within other comprehensive income. Interest rate swap In June 2008, the Company entered into a three-year fully amortizable interest rate swap agreement (the “Swap”) with a notional amount of $150.0 million and an expiration date of June 30, 2011. On June 29, 2010, the Company settled the Swap with the financial institution holder of the derivative instrument, which resulted in a $1.3 million gain in 2010.

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- Definition The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624181-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41635-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708773-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 10: 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=7476318&loc=SL5624163-113959 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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