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Note 13 - Segment Reporting - Summary of Amortizable Intangible Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortizable intangible assets	$ 49,574	$ 36,974
CANADA
Amortizable intangible assets	6,218	6,553
UNITED STATES
Amortizable intangible assets	$ 43,356	$ 30,421

X

- 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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Namespace Prefix:	us-gaap_
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Period Type:	instant

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- Details

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Balance Type:
Period Type:

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- Details

Name:	srt_StatementGeographicalAxis=country_US
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