Note 14 - Income Taxes (Details) - Liability Associated with Unrecognized Tax Benefits (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Liability Associated with Unrecognized Tax Benefits [Abstract]
Gross unrecognized tax benefits at beginning of year	$ 371us-gaap_UnrecognizedTaxBenefits	$ 575us-gaap_UnrecognizedTaxBenefits	$ 2,712us-gaap_UnrecognizedTaxBenefits
Gross unrecognized tax benefits at end of year	905us-gaap_UnrecognizedTaxBenefits	371us-gaap_UnrecognizedTaxBenefits	575us-gaap_UnrecognizedTaxBenefits
Increases related to prior year tax positions	633	124	63
Decreases related to prior year tax positions	(85)	(53)	(84)
Increases related to current year tax positions	0	0	0
Decreases related to current year tax positions	0	0	0
Settlements with taxing authorities	0	0	0
Lapse of applicable statute of limitations	$ (14)	$ (275)	$ (2,116)

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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

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-Name Accounting Standards Codification

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