Note 8 - Income Taxes (Details) - Valuation Allowance of Deferred Tax Assets (Valuation Allowance of Deferred Tax Assets [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Valuation Allowance of Deferred Tax Assets [Member]
Valuation allowance for deferred tax assets
Balance at Beginning of Period	$ 5,087	$ 4,708	$ 30,731
Charged to Costs and Expenses	346	379
Deductions/Write-offs of Accounts			(26,023)
Balance at End of Period	$ 5,433	$ 5,087	$ 4,708

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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+ References

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- Definition

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