Note 15 - Earnings Per Share (Details Textual) - 6.25% Convertible Notes Due 2018 [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2018	May 01, 2018
Debt Instrument, Interest Rate, Stated Percentage		6.25%
Debt Instrument, Convertible, Number of Shares	97.2668
Debt Instrument, Convertible, Conversion Principal Amount Per Note	$ 1
Debt Instrument, Convertible, Conversion Price	$ 10.28
Convertible Notes Payable [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	321,000

The amount of principal per note of the debt instrument being converted.

No definition available.

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- Definition

The number of shares that the holder of the debt instrument would receive if the debt was converted.

+ References

No definition available.

+ Details

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Details

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