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Other Intangible Assets - Schedule of other intangible assets (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | $ 51,670 | $ 51,527
Finite-lived intangible assets, accumulated amortization | 15,681 | 14,926
Total other intangible assets | 63,300 | 63,157
Other intangible assets, net | 47,619 | 48,231
Trademarks and brand names |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets, cost | 11,630 | 11,630
Acquired Intangible Assets |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | 49,879 | 49,736
Finite-lived intangible assets, accumulated amortization | 15,488 | 14,830
Patents and technology |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | 17,457 | 17,310
Finite-lived intangible assets, accumulated amortization | 5,850 | 5,586
Customer lists |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | 30,877 | 30,877
Finite-lived intangible assets, accumulated amortization | 8,509 | 8,127
Trademarks and brand names |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | 1,545 | 1,549
Finite-lived intangible assets, accumulated amortization | 1,129 | 1,117
Deferred financing costs |  |
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, cost | 1,791 | 1,791
Finite-lived intangible assets, accumulated amortization | $ 193 | $ 96

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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 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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