Note 3 - Goodwill and Intangible Assets - Intangible Asset Summaries (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying Value	$ 43,755	$ 43,755
Accumulated Amortization	(43,225)	(42,836)
Net Book Value	530	919
Customer Relationships [Member]
Carrying Value	24,025	24,025
Accumulated Amortization	(23,497)	(23,110)
Net Book Value	528	915
Customer Contracts [Member]
Carrying Value	19,600	19,600
Accumulated Amortization	(19,600)	(19,600)
Net Book Value
Noncompete Agreements [Member]
Carrying Value	107	107
Accumulated Amortization	(107)	(107)
Net Book Value
Trade Names [Member]
Carrying Value	23	23
Accumulated Amortization	(21)	(19)
Net Book Value	$ 2	$ 4

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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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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