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Comprehensive income (loss) (Tables) | 9 Months Ended
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Sep. 30, 2013
Equity [Abstract] |
Schedule of Components of Changes in Accumulated Other Comprehensive Income | The components of and changes in accumulated other comprehensive income were as follows:
(US$ in thousands) |  | Foreign Currency Translation Adjustments |  |  | Fair Value of Cross-Currency Swap |  |  | Accumulated Other Comprehensive Income |
Balance at December 31, 2012 |  | $ | 4,614 |  |  | $ | 131 |  |  | $ | 4,745 |
Unrealized gain on cross-currency swap, net of tax of $275 |  |  | — |  |  |  | 486 |  |  |  | 486 |
Foreign currency translation adjustment (1) |  |  | (273 | ) |  |  | — |  |  |  | (273 | )
Balance at September 30, 2013 |  | $ | 4,341 |  |  | $ | 617 |  |  | $ | 4,958 |
(1) | As the cash generally remains permanently invested in the non-U.S. dollar denominated foreign subsidiaries, no deferred taxes are recognized on the related foreign currency translation adjustment.
Schedule of Comprehensive Income (Loss) | Comprehensive income (loss) was comprised of the following components:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(US$ in thousands) |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  |  |  |  | (Restated) |  |  |  |  |  | (Restated) |
Net income (loss) |  | $ | (19,822 | ) |  | $ | 5,016 |  |  | $ | (17,639 | ) |  | $ | 21,677 |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gain (loss) on cross-currency swap, net of tax of $275 |  |  | 582 |  |  |  | 253 |  |  |  | 486 |  |  |  | 177 |
Foreign currency translation adjustment |  |  | 3,176 |  |  |  | 1,171 |  |  |  | (273 | ) |  |  | 215 |
Total comprehensive income (loss) |  | $ | (16,064 | ) |  | $ | 6,440 |  |  | $ | (17,426 | ) |  | $ | 22,069 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e526-108580 + Details
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