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Goodwill and Intangible Assets, Net, Intangible Assets, Net (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017
--- | --- | --- | ---
Changes in gross carrying amount of finite-lived intangible assets |  |  |
Gross carrying amount | $ 54,827 | $ 54,537 | $ 61,972
Accumulated amortization | (26,525) | (25,211) | (30,259)
Net carrying amount | 28,302 | 29,326 | 31,713
North America |  |  |
Changes in gross carrying amount of finite-lived intangible assets |  |  |
Gross carrying amount | 30,715 | 30,775 | 33,862
Accumulated amortization | (14,472) | (13,732) | (14,815)
Net carrying amount | 16,243 | 17,043 | 19,047
Europe |  |  |
Changes in gross carrying amount of finite-lived intangible assets |  |  |
Gross carrying amount | 24,112 | 23,762 | 28,110
Accumulated amortization | (12,053) | (11,479) | (15,444)
Net carrying amount | $ 12,059 | $ 12,283 | $ 12,666

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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