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Financial Instruments and Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2012
Fair Value Disclosures [Abstract] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] | The notional amounts and fair values of derivative instruments in the consolidated balance sheets were as follows:
|  |  |  |  |  |  |  | Prepaid expenses and other |  |  |  |  |  |  |
|  |  |  |  |  |  |  | current assets / other |  |  | Accrued expenses and other |
|  | Notional amounts (A) |  |  | long-term assets |  |  | current liabilities |
|  | December 31, |  |  | December 31, |  |  | December 31, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Derivatives designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  | ` |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Flow Hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward currency contracts |  | $ | 36,500 |  |  | $ | 55,000 |  |  | $ | 1,800 |  |  | $ | - |  |  | $ | - |  |  | $ | 4,158 |
Fixed price commodity contracts |  |  | 2,436 |  |  |  | 6,500 |  |  |  | 340 |  |  |  | - |  |  |  | - |  |  |  | 3,564 |
Fair Value Hedge: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contract |  | $ | 45,000 |  |  | $ | 45,000 |  |  | $ | 2,212 |  |  | $ | 1,078 |  |  | $ | - |  |  | $ | - |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward currency contracts |  | $ | 12,643 |  |  | $ | 25,894 |  |  | $ | - |  |  | $ | 2 |  |  | $ | 191 |  |  | $ | - |
(A) Notional amounts represent the gross contract / notional amount of the derivatives outstanding.
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Amounts recorded for the cash flow hedges in other comprehensive income (loss) in shareholders’ equity and in net income for the years ended December 31 were as follows:
|  | Gain recorded in other comprehensive income |  |  | Loss recorded in other comprehensive income |  |  | Loss reclassified from other comprehensive income into net income |  |  | Loss reclassified from other comprehensive income into net income |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Derivatives designated as cash flow hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward currency contracts |  | $ | 5,717 |  |  | $ | (7,118 | ) |  | $ | (241 | ) |  | $ | (2,960 | )
Fixed price commodity contracts |  |  | 1,389 |  |  |  | (4,686 | ) |  |  | (2,515 | ) |  |  | (1,122 | )
Total derivatives designated as cash flow hedges |  | $ | 7,106 |  |  | $ | (11,804 | ) |  | $ | (2,756 | ) |  | $ | (4,082 | )
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] | The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value.
|  |  |  |  |  |  |  |  |  |  | December 31, |  |  | December 31, |
|  |  |  |  | 2012 |  |  | 2011 |
|  |  |  |  | Fair value estimated using |  |  |  |
|  | Fair value |  |  | Level 1 inputs (A) |  |  | Level 2 inputs (B) |  |  | Level 3 inputs (C) |  |  | Fair value |
Financial assets carried at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contract |  | $ | 2,212 |  |  | $ | - |  |  | $ | 2,212 |  |  | $ | - |  |  | $ | 1,078 |
Forward currency contracts |  |  | 1,800 |  |  |  | - |  |  |  | 1,800 |  |  |  | - |  |  |  | 2 |
Fixed price commodity contracts |  |  | 340 |  |  |  | - |  |  |  | 340 |  |  |  | - |  |  |  | - |
Total financial assets carried at fair value |  | $ | 4,352 |  |  | $ | - |  |  | $ | 4,352 |  |  | $ | - |  |  | $ | 1,080 |
Financial liabilities carried at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward currency contracts |  | $ | 191 |  |  | $ | - |  |  | $ | 191 |  |  | $ | - |  |  | $ | 4,158 |
Fixed price commodity contracts |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 3,564 |
Total financial liabilities carried at fair value |  | $ | 191 |  |  | $ | - |  |  | $ | 191 |  |  | $ | - |  |  | $ | 7,722 |
| (A) | Fair values estimated using Level 1 inputs, which consist of quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. The Company did not have any fair value estimates using Level 1 inputs at December 31, 2012 or 2011.
| (B) | Fair values estimated using Level 2 inputs, other than quoted prices, that are observable for the asset or liability, either directly or indirectly and include among other things, quoted prices for similar assets or liabilities in markets that are active or inactive as well as inputs other than quoted prices that are observable. For forward currency, fixed price commodity and interest rate swap contracts, inputs include foreign currency exchange rates, commodity indexes and the six-month forward LIBOR.
| (C) | Fair values estimated using Level 3 inputs consist of significant unobservable inputs. The Company did not have any fair value estimates using Level 3 inputs at December 31, 2012 or 2011.

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- Definition Tabular disclosure of the effective portion of gains and losses on derivative instruments (and nonderivative instruments) designated and qualifying in cash flow hedges recorded in accumulated other comprehensive income (loss) during the term of the hedging relationship and reclassified into earnings during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + 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 Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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. Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -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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