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Divestiture (Details) € in Thousands, $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2013 EUR (€) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 EUR (€) | Dec. 31, 2012 USD ($) | Jul. 31, 2015 EUR (€) | Jul. 31, 2015 USD ($) | Jul. 31, 2014 EUR (€) | Jul. 31, 2014 USD ($) | Jul. 31, 2013 EUR (€) | Jul. 31, 2013 USD ($) | Jul. 31, 2012 EUR (€)
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Date of divestiture | Jul. 31, 2012 |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture |  |  |  | € 815 | $ 1,014 |  |  |  |  |  |  |
Amount financed as part of selling price |  |  |  |  |  |  |  |  |  |  |  | € 5,351
Total selling price |  |  |  |  |  |  |  |  |  |  |  | € 6,166
Amount of installment payments received quarterly 2013 |  | € 2,126 | $ 2,826 |  |  |  |  |  |  |  |  |
First anniversary payment received |  |  |  |  |  |  |  |  |  | € 1,075 | $ 1,435 |
Second anniversary payment received |  |  |  |  |  |  |  | € 1,075 | $ 1,418 |  |  |
Third and final anniversary payment received |  |  |  |  |  | € 1,075 | $ 1,185 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Operating Income (Loss) | $ |  |  |  |  | $ 784 |  |  |  |  |  |  |

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- Definition The amount financed associated with the divestment of businesses during the period. The finance portion only of the selling price. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition The total amount of quarterly installment payments received during 2013 as part of these business divestitures. + References No definition available. + Details
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- Definition The total amount of first anniversary payment received as part of this business divestiture. + References No definition available. + Details
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- Definition The total amount of second anniversary payment received as part of this business divestiture. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The total amount of third and final anniversary payment received as part of this business divestiture. + References No definition available. + Details
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- Definition Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2941-110230 + Details
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- Definition This element represents the cash inflow during the period from the sale of a component of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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