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Accumulated other comprehensive loss (Tables) | 6 Months Ended
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Jun. 30, 2020
Equity [Abstract] |
Components of Changes in Accumulated Other Comprehensive Loss | The components of and changes in accumulated other comprehensive loss were as follows:
(U.S. Dollars, in thousands) |  | Currency Translation Adjustments |  |  |  | Accumulated Other Comprehensive Loss |
Balance at December 31, 2019 |  | $ | (3,039 | ) |  |  | $ | (3,039 | )
Other comprehensive loss |  |  | (227 | ) |  |  |  | (227 | )
Income taxes |  |  | — |  |  |  |  | — |
Balance at June 30, 2020 |  | $ | (3,266 | ) |  |  | $ | (3,266 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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