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Note 12 - Segment Reporting - Summary of Amortizable Intangible Assets by Geographic Region (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
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Amortizable intangible assets | $ 38,814 | $ 45,652
CANADA |  |
Amortizable intangible assets | 6,860 | 7,749
UNITED STATES |  |
Amortizable intangible assets | 31,954 | 37,783
GERMANY |  |
Amortizable intangible assets |  | $ 120

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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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