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Fair value measurement (Tables) | 12 Months Ended
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Dec. 31, 2012
Financial Assets and Liabilities Carried at Fair Value Measured on Recurring Basis | The following tables provide the financial assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2012 and December 31, 2011:
|  | Total carrying value at December 31, 2012 |  |  | Quoted prices in active markets (Level 1) |  |  | Significant other observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |
|  | (Dollars in thousands) |
Investments in marketable securities |  | $ | 4,785 |  |  | $ | 4,785 |  |  | $ | — |  |  | $ | — |
Derivative assets |  |  | 1,279 |  |  |  | — |  |  |  | 1,279 |  |  |  | — |
Derivative liabilities |  |  | 598 |  |  |  | — |  |  |  | 598 |  |  |  | — |
Contingent consideration liabilities |  |  | 51,196 |  |  |  | — |  |  |  | — |  |  |  | 51,196 |
|  | Total carrying value at December 31, 2011 |  |  | Quoted prices in active markets (Level 1) |  |  | Significant other observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |
|  | (Dollars in thousands) |
Cash and cash equivalents |  | $ | 40,005 |  |  | $ | 40,005 |  |  | $ | — |  |  | $ | — |
Bonds — foreign government |  |  | 880 |  |  |  | 880 |  |  |  | — |  |  |  | — |
Investments in marketable securities |  |  | 4,189 |  |  |  | 4,189 |  |  |  | — |  |  |  | — |
Derivative assets |  |  | 204 |  |  |  | — |  |  |  | 204 |  |  |  | — |
Derivative liabilities |  |  | 633 |  |  |  | — |  |  |  | 633 |  |  |  | — |
Contingent consideration liabilities |  |  | 9,676 |  |  |  | — |  |  |  | — |  |  |  | 9,676 |
Reconciliation of Changes in Level 3 Financial Liabilities Measured at Fair Value on Recurring Basis | The following table provides a reconciliation of changes in Level 3 financial liabilities measured at fair value on a recurring basis for the years ended December 31, 2012 and December 31, 2011:
|  | Contingent consideration |
|  | 2012 |  |  | 2011 |
|  | (Dollars in thousands) |
Beginning balance |  | $ | 9,676 |  |  | $ | — |
Initial estimate upon acquisition |  |  | 58,895 |  |  |  | 15,400 |
Payment |  |  | (18,426 | ) |  |  | (6,000 | )
Revaluations |  |  | 1,055 |  |  |  | 276 |
Translation adjustment |  |  | (4 | ) |  |  | — |
Ending balance |  | $ | 51,196 |  |  | $ | 9,676 |
Valuation Technique and Inputs Used to Determine Fair Value of Assets or Liabilities | The following table provides information regarding the valuation techniques and inputs used in determining the fair value of assets or liabilities categorized as Level 3 measurements:
|  | Valuation Technique |  | Unobservable Input |  | Range (Weighted Average) |
Contingent consideration |  | Discounted cash flow |  | Discount rate |  |  | 2.8% - 10%(6%) |
|  |  |  | Probability of payment |  |  | 0-100%(60%) |

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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