Note 13 - Segment Reporting - Summary of Amortizable Intangible Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortizable intangible assets	$ 47,618	$ 45,344
CANADA
Amortizable intangible assets	4,873	5,207
UNITED STATES
Amortizable intangible assets	$ 42,745	$ 40,137

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

Reference 2: 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant