Note 7 - Goodwill and Intangible Assets - Summary of Acquired Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Gross Carrying Amount	$ 18,328	$ 17,170
Accumulated Amortization	(4,460)	(2,370)
Net Carrying Amount	13,868	14,800
Computer Software, Intangible Asset [Member]
Gross Carrying Amount	7,074	6,444
Accumulated Amortization	(1,810)	(829)
Net Carrying Amount	$ 5,264	$ 5,615
Computer Software, Intangible Asset [Member] \| Minimum [Member]
Amortization Period (Year)	3 years	3 years
Computer Software, Intangible Asset [Member] \| Maximum [Member]
Amortization Period (Year)	7 years	7 years
Technology-Based Intangibles [Member]
Amortization Period (Year)	20 years	20 years
Gross Carrying Amount	$ 3,646	$ 3,204
Accumulated Amortization	(1,413)	(1,082)
Net Carrying Amount	2,233	2,122
Customer Contracts [Member]
Gross Carrying Amount	7,608	7,522
Accumulated Amortization	(1,237)	(459)
Net Carrying Amount	$ 6,371	$ 7,063
Customer Contracts [Member] \| Minimum [Member]
Amortization Period (Year)	10 years	10 years
Customer Contracts [Member] \| Maximum [Member]
Amortization Period (Year)	15 years	15 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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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

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- Definition

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

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

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